asterisk13: add patch from alpine linux to fix AMI on musl
authorSebastian Kemper <sebastian_ml@gmx.net>
Sun, 10 Sep 2017 20:27:18 +0000 (22:27 +0200)
committerSebastian Kemper <sebastian_ml@gmx.net>
Sun, 10 Sep 2017 20:27:20 +0000 (22:27 +0200)
This adds ASTERISK-24517.patch from alpine linux. Without the patch
there are problems with the tcp/tls wrapper when running on a musl
toolchain. This is visible when toying with AMI:

LEDE*CLI> !nc localhost 5038
[Sep 10 12:13:25] WARNING[10315]: tcptls.c:684 handle_tcptls_connection: FILE * open failed!

This fixes issue #185 for asterisk 13 in trunk. The patch cannot be
applied to asterisk 11.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
net/asterisk-13.x/patches/055-ASTERISK-24517.patch [new file with mode: 0644]

diff --git a/net/asterisk-13.x/patches/055-ASTERISK-24517.patch b/net/asterisk-13.x/patches/055-ASTERISK-24517.patch
new file mode 100644 (file)
index 0000000..e6559ba
--- /dev/null
@@ -0,0 +1,3210 @@
+From c479abfc489c42923ca7bb9afad11ad5ba84793e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
+Date: Thu, 2 Jun 2016 22:10:06 +0300
+Subject: [PATCH] Implement internal abstraction for iostreams
+
+fopencookie/funclose is a non-standard API and should not be used
+in portable software. Additionally, the way FILE's fd is used in
+non-blocking mode is undefined behaviour and cannot be relied on.
+
+This introduces internal abstraction for io streams, that allows
+implementing the desired virtualization of read/write operations
+with necessary timeout handling.
+
+ASTERISK-24515 #close
+ASTERISK-24517 #close
+
+Change-Id: Id916aef418b665ced6a7489aef74908b6e376e85
+---
+ apps/app_externalivr.c      | 119 ++++---
+ channels/chan_sip.c         |  61 ++--
+ configure.ac                |   4 -
+ include/asterisk/iostream.h | 118 +++++++
+ include/asterisk/tcptls.h   |  92 +-----
+ main/http.c                 | 109 ++-----
+ main/iostream.c             | 553 ++++++++++++++++++++++++++++++++
+ main/manager.c              | 137 ++++----
+ main/tcptls.c               | 767 ++++++--------------------------------------
+ main/utils.c                |  68 ----
+ res/res_http_post.c         |  10 +-
+ res/res_http_websocket.c    | 116 +++----
+ res/res_phoneprov.c         |   2 +-
+ 13 files changed, 993 insertions(+), 1163 deletions(-)
+ create mode 100644 include/asterisk/iostream.h
+ create mode 100644 main/iostream.c
+
+--- a/apps/app_externalivr.c
++++ b/apps/app_externalivr.c
+@@ -152,10 +152,12 @@ struct gen_state {
+ };
+ static int eivr_comm(struct ast_channel *chan, struct ivr_localuser *u, 
+-      int *eivr_events_fd, int *eivr_commands_fd, int *eivr_errors_fd, 
++      struct ast_iostream *eivr_events,
++      struct ast_iostream *eivr_commands,
++      struct ast_iostream *eivr_errors,
+       const struct ast_str *args, const struct ast_flags flags);
+-static void send_eivr_event(FILE *handle, const char event, const char *data,
++static void send_eivr_event(struct ast_iostream *stream, const char event, const char *data,
+       const struct ast_channel *chan)
+ {
+       struct ast_str *tmp = ast_str_create(12);
+@@ -164,9 +166,11 @@ static void send_eivr_event(FILE *handle
+       if (data) {
+               ast_str_append(&tmp, 0, ",%s", data);
+       }
++      ast_str_append(&tmp, 0, "\n");
++      ast_iostream_write(stream, ast_str_buffer(tmp), strlen(ast_str_buffer(tmp)));
++      ast_str_truncate(tmp, -1);
+-      fprintf(handle, "%s\n", ast_str_buffer(tmp));
+-      ast_debug(1, "sent '%s'\n", ast_str_buffer(tmp));
++      ast_debug(1, "sent '%s'", ast_str_buffer(tmp));
+       ast_free(tmp);
+ }
+@@ -395,6 +399,8 @@ static int app_exec(struct ast_channel *
+       int child_stdin[2] = { -1, -1 };
+       int child_stdout[2] = { -1, -1 };
+       int child_stderr[2] = { -1, -1 };
++      struct ast_iostream *stream_stdin = NULL, *stream_stdout = NULL,
++              *stream_stderr = NULL;
+       int res = -1;
+       int pid;
+@@ -526,7 +532,7 @@ static int app_exec(struct ast_channel *
+                       goto exit;
+               }
+-              res = eivr_comm(chan, u, &ser->fd, &ser->fd, NULL, comma_delim_args, flags);
++              res = eivr_comm(chan, u, ser->stream, ser->stream, NULL, comma_delim_args, flags);
+       } else {
+               if (pipe(child_stdin)) {
+@@ -568,7 +574,12 @@ static int app_exec(struct ast_channel *
+                       child_stdout[1] = -1;
+                       close(child_stderr[1]);
+                       child_stderr[1] = -1;
+-                      res = eivr_comm(chan, u, &child_stdin[1], &child_stdout[0], &child_stderr[0], comma_delim_args, flags);
++
++                      stream_stdin  = ast_iostream_from_fd(&child_stdin[1]);
++                      stream_stdout = ast_iostream_from_fd(&child_stdout[0]);
++                      stream_stderr = ast_iostream_from_fd(&child_stderr[0]);
++
++                      res = eivr_comm(chan, u, stream_stdin, stream_stdout, stream_stderr, comma_delim_args, flags);
+               }
+       }
+@@ -576,6 +587,15 @@ static int app_exec(struct ast_channel *
+       if (u->gen_active) {
+               ast_deactivate_generator(chan);
+       }
++      if (stream_stdin) {
++              ast_iostream_close(stream_stdin);
++      }
++      if (stream_stdout) {
++              ast_iostream_close(stream_stdout);
++      }
++      if (stream_stderr) {
++              ast_iostream_close(stream_stderr);
++      }
+       if (child_stdin[0] > -1) {
+               close(child_stdin[0]);
+       }
+@@ -604,46 +624,25 @@ static int app_exec(struct ast_channel *
+ }
+ static int eivr_comm(struct ast_channel *chan, struct ivr_localuser *u, 
+-                              int *eivr_events_fd, int *eivr_commands_fd, int *eivr_errors_fd, 
+-                              const struct ast_str *args, const struct ast_flags flags)
++                              struct ast_iostream *eivr_events,
++                              struct ast_iostream *eivr_commands,
++                              struct ast_iostream *eivr_errors,
++                              const struct ast_str *args, const struct ast_flags flags)
+ {
++      char input[1024];
+       struct playlist_entry *entry;
+       struct ast_frame *f;
+       int ms;
+       int exception;
+       int ready_fd;
+-      int waitfds[2] = { *eivr_commands_fd, (eivr_errors_fd) ? *eivr_errors_fd : -1 };
++      int waitfds[2];
++      int r;
+       struct ast_channel *rchan;
+       int res = -1;
+-      int test_available_fd = -1;
+       int hangup_info_sent = 0;
+-  
+-      FILE *eivr_commands = NULL;
+-      FILE *eivr_errors = NULL;
+-      FILE *eivr_events = NULL;
+-
+-      if (!(eivr_events = fdopen(*eivr_events_fd, "w"))) {
+-              ast_chan_log(LOG_ERROR, chan, "Could not open stream to send events\n");
+-              goto exit;
+-      }
+-      if (!(eivr_commands = fdopen(*eivr_commands_fd, "r"))) {
+-              ast_chan_log(LOG_ERROR, chan, "Could not open stream to receive commands\n");
+-              goto exit;
+-      }
+-      if (eivr_errors_fd) {  /* if opening a socket connection, error stream will not be used */
+-              if (!(eivr_errors = fdopen(*eivr_errors_fd, "r"))) {
+-                      ast_chan_log(LOG_ERROR, chan, "Could not open stream to receive errors\n");
+-                      goto exit;
+-              }
+-      }
+-      test_available_fd = open("/dev/null", O_RDONLY);
+- 
+-      setvbuf(eivr_events, NULL, _IONBF, 0);
+-      setvbuf(eivr_commands, NULL, _IONBF, 0);
+-      if (eivr_errors) {
+-              setvbuf(eivr_errors, NULL, _IONBF, 0);
+-      }
++      waitfds[0] = ast_iostream_get_fd(eivr_commands);
++      waitfds[1] = eivr_errors ? ast_iostream_get_fd(eivr_errors) : -1;
+       while (1) {
+               if (ast_test_flag(ast_channel_flags(chan), AST_FLAG_ZOMBIE)) {
+@@ -667,7 +666,7 @@ static int eivr_comm(struct ast_channel
+               errno = 0;
+               exception = 0;
+  
+-              rchan = ast_waitfor_nandfds(&chan, 1, waitfds, (eivr_errors_fd) ? 2 : 1, &exception, &ready_fd, &ms);
++              rchan = ast_waitfor_nandfds(&chan, 1, waitfds, (eivr_errors) ? 2 : 1, &exception, &ready_fd, &ms);
+  
+               if (ast_channel_state(chan) == AST_STATE_UP && !AST_LIST_EMPTY(&u->finishlist)) {
+                       AST_LIST_LOCK(&u->finishlist);
+@@ -715,15 +714,18 @@ static int eivr_comm(struct ast_channel
+                               break;
+                       }
+                       ast_frfree(f);
+-              } else if (ready_fd == *eivr_commands_fd) {
+-                      char input[1024];
+- 
+-                      if (exception || (dup2(*eivr_commands_fd, test_available_fd) == -1) || feof(eivr_commands)) {
++              } else if (ready_fd == waitfds[0]) {
++                      if (exception) {
+                               ast_chan_log(LOG_ERROR, chan, "Child process went away\n");
+                               break;
+                       }
+   
+-                      if (!fgets(input, sizeof(input), eivr_commands)) {
++                      r = ast_iostream_gets(eivr_commands, input, sizeof(input));
++                      if (r <= 0) {
++                              if (r == 0) {
++                                      ast_chan_log(LOG_ERROR, chan, "Child process went away\n");
++                                      break;
++                              }
+                               continue;
+                       }
+@@ -869,16 +871,18 @@ static int eivr_comm(struct ast_channel
+                               else
+                                       ast_chan_log(LOG_WARNING, chan, "Unknown option requested: %s\n", &input[2]);
+                       }
+-              } else if (eivr_errors_fd && (ready_fd == *eivr_errors_fd)) {
+-                      char input[1024];
+-  
+-                      if (exception || feof(eivr_errors)) {
++              } else if (ready_fd == waitfds[1]) {
++                      if (exception) {
+                               ast_chan_log(LOG_ERROR, chan, "Child process went away\n");
+                               break;
+                       }
+-                      if (fgets(input, sizeof(input), eivr_errors)) {
++                      r = ast_iostream_gets(eivr_errors, input, sizeof(input));
++                      if (r > 0) {
+                               ast_chan_log(LOG_NOTICE, chan, "stderr: %s\n", ast_strip(input));
+-                      }
++                      } else if (r == 0) {
++                              ast_chan_log(LOG_ERROR, chan, "Child process went away\n");
++                              break;
++                      }
+               } else if ((ready_fd < 0) && ms) { 
+                       if (errno == 0 || errno == EINTR)
+                               continue;
+@@ -888,23 +892,7 @@ static int eivr_comm(struct ast_channel
+               }
+       }
+  
+-      exit:
+-      if (test_available_fd > -1) {
+-              close(test_available_fd);
+-      }
+-      if (eivr_events) {
+-              fclose(eivr_events);
+-              *eivr_events_fd = -1;
+-      }
+-      if (eivr_commands) {
+-              fclose(eivr_commands);
+-              *eivr_commands_fd = -1;
+-      }
+-      if (eivr_errors) {
+-              fclose(eivr_errors);
+-              *eivr_errors_fd = -1;
+-      }
+-      return res;
++      return res;
+ }
+ static int unload_module(void)
+--- a/channels/chan_sip.c
++++ b/channels/chan_sip.c
+@@ -2541,7 +2541,7 @@ static struct sip_threadinfo *sip_thread
+       }
+       ao2_t_ref(tcptls_session, +1, "tcptls_session ref for sip_threadinfo object");
+       th->tcptls_session = tcptls_session;
+-      th->type = transport ? transport : (tcptls_session->ssl ? AST_TRANSPORT_TLS: AST_TRANSPORT_TCP);
++      th->type = transport ? transport : (ast_iostream_get_ssl(tcptls_session->stream) ? AST_TRANSPORT_TLS: AST_TRANSPORT_TCP);
+       ao2_t_link(threadt, th, "Adding new tcptls helper thread");
+       ao2_t_ref(th, -1, "Decrementing threadinfo ref from alloc, only table ref remains");
+       return th;
+@@ -2564,8 +2564,7 @@ static int sip_tcptls_write(struct ast_t
+       ao2_lock(tcptls_session);
+-      if ((tcptls_session->fd == -1) ||
+-              !(th = ao2_t_find(threadt, &tmp, OBJ_POINTER, "ao2_find, getting sip_threadinfo in tcp helper thread")) ||
++      if (!(th = ao2_t_find(threadt, &tmp, OBJ_POINTER, "ao2_find, getting sip_threadinfo in tcp helper thread")) ||
+               !(packet = ao2_alloc(sizeof(*packet), tcptls_packet_destructor)) ||
+               !(packet->data = ast_str_create(len))) {
+               goto tcptls_write_setup_error;
+@@ -2878,7 +2877,7 @@ static int sip_tcptls_read(struct sip_re
+                       } else {
+                               timeout = -1;
+                       }
+-                      res = ast_wait_for_input(tcptls_session->fd, timeout);
++                      res = ast_wait_for_input(ast_iostream_get_fd(tcptls_session->stream), timeout);
+                       if (res < 0) {
+                               ast_debug(2, "SIP TCP/TLS server :: ast_wait_for_input returned %d\n", res);
+                               return -1;
+@@ -2887,7 +2886,7 @@ static int sip_tcptls_read(struct sip_re
+                               return -1;
+                       }
+-                      res = ast_tcptls_server_read(tcptls_session, readbuf, sizeof(readbuf) - 1);
++                      res = ast_iostream_read(tcptls_session->stream, readbuf, sizeof(readbuf) - 1);
+                       if (res < 0) {
+                               if (errno == EAGAIN || errno == EINTR) {
+                                       continue;
+@@ -2948,18 +2947,8 @@ static void *_sip_tcp_helper_thread(stru
+                       goto cleanup;
+               }
+-              if ((flags = fcntl(tcptls_session->fd, F_GETFL)) == -1) {
+-                      ast_log(LOG_ERROR, "error setting socket to non blocking mode, fcntl() failed: %s\n", strerror(errno));
+-                      goto cleanup;
+-              }
+-
+-              flags |= O_NONBLOCK;
+-              if (fcntl(tcptls_session->fd, F_SETFL, flags) == -1) {
+-                      ast_log(LOG_ERROR, "error setting socket to non blocking mode, fcntl() failed: %s\n", strerror(errno));
+-                      goto cleanup;
+-              }
+-
+-              if (!(me = sip_threadinfo_create(tcptls_session, tcptls_session->ssl ? AST_TRANSPORT_TLS : AST_TRANSPORT_TCP))) {
++              ast_iostream_nonblock(tcptls_session->stream);
++              if (!(me = sip_threadinfo_create(tcptls_session, ast_iostream_get_ssl(tcptls_session->stream) ? AST_TRANSPORT_TLS : AST_TRANSPORT_TCP))) {
+                       goto cleanup;
+               }
+               me->threadid = pthread_self();
+@@ -2982,15 +2971,15 @@ static void *_sip_tcp_helper_thread(stru
+       }
+       flags = 1;
+-      if (setsockopt(tcptls_session->fd, SOL_SOCKET, SO_KEEPALIVE, &flags, sizeof(flags))) {
++      if (setsockopt(ast_iostream_get_fd(tcptls_session->stream), SOL_SOCKET, SO_KEEPALIVE, &flags, sizeof(flags))) {
+               ast_log(LOG_ERROR, "error enabling TCP keep-alives on sip socket: %s\n", strerror(errno));
+               goto cleanup;
+       }
+-      ast_debug(2, "Starting thread for %s server\n", tcptls_session->ssl ? "TLS" : "TCP");
++      ast_debug(2, "Starting thread for %s server\n", ast_iostream_get_ssl(tcptls_session->stream) ? "TLS" : "TCP");
+       /* set up pollfd to watch for reads on both the socket and the alert_pipe */
+-      fds[0].fd = tcptls_session->fd;
++      fds[0].fd = ast_iostream_get_fd(tcptls_session->stream);
+       fds[1].fd = me->alert_pipe[0];
+       fds[0].events = fds[1].events = POLLIN | POLLPRI;
+@@ -3010,9 +2999,9 @@ static void *_sip_tcp_helper_thread(stru
+        * We cannot let the stream exclusively wait for data to arrive.
+        * We have to wake up the task to send outgoing messages.
+        */
+-      ast_tcptls_stream_set_exclusive_input(tcptls_session->stream_cookie, 0);
++      ast_iostream_set_exclusive_input(tcptls_session->stream, 0);
+-      ast_tcptls_stream_set_timeout_sequence(tcptls_session->stream_cookie, ast_tvnow(),
++      ast_iostream_set_timeout_sequence(tcptls_session->stream, ast_tvnow(),
+               tcptls_session->client ? -1 : (authtimeout * 1000));
+       for (;;) {
+@@ -3020,7 +3009,7 @@ static void *_sip_tcp_helper_thread(stru
+               if (!tcptls_session->client && req.authenticated && !authenticated) {
+                       authenticated = 1;
+-                      ast_tcptls_stream_set_timeout_disable(tcptls_session->stream_cookie);
++                      ast_iostream_set_timeout_disable(tcptls_session->stream);
+                       ast_atomic_fetchadd_int(&unauth_sessions, -1);
+               }
+@@ -3031,7 +3020,7 @@ static void *_sip_tcp_helper_thread(stru
+                       }
+                       if (timeout == 0) {
+-                              ast_debug(2, "SIP %s server timed out\n", tcptls_session->ssl ? "TLS": "TCP");
++                              ast_debug(2, "SIP %s server timed out\n", ast_iostream_get_ssl(tcptls_session->stream) ? "TLS": "TCP");
+                               goto cleanup;
+                       }
+               } else {
+@@ -3041,11 +3030,11 @@ static void *_sip_tcp_helper_thread(stru
+               if (ast_str_strlen(tcptls_session->overflow_buf) == 0) {
+                       res = ast_poll(fds, 2, timeout); /* polls for both socket and alert_pipe */
+                       if (res < 0) {
+-                              ast_debug(2, "SIP %s server :: ast_wait_for_input returned %d\n", tcptls_session->ssl ? "TLS": "TCP", res);
++                              ast_debug(2, "SIP %s server :: ast_wait_for_input returned %d\n", ast_iostream_get_ssl(tcptls_session->stream) ? "TLS": "TCP", res);
+                               goto cleanup;
+                       } else if (res == 0) {
+                               /* timeout */
+-                              ast_debug(2, "SIP %s server timed out\n", tcptls_session->ssl ? "TLS": "TCP");
++                              ast_debug(2, "SIP %s server timed out\n", ast_iostream_get_ssl(tcptls_session->stream) ? "TLS": "TCP");
+                               goto cleanup;
+                       }
+               }
+@@ -3070,14 +3059,14 @@ static void *_sip_tcp_helper_thread(stru
+                       memset(buf, 0, sizeof(buf));
+-                      if (tcptls_session->ssl) {
++                      if (ast_iostream_get_ssl(tcptls_session->stream)) {
+                               set_socket_transport(&req.socket, AST_TRANSPORT_TLS);
+                               req.socket.port = htons(ourport_tls);
+                       } else {
+                               set_socket_transport(&req.socket, AST_TRANSPORT_TCP);
+                               req.socket.port = htons(ourport_tcp);
+                       }
+-                      req.socket.fd = tcptls_session->fd;
++                      req.socket.fd = ast_iostream_get_fd(tcptls_session->stream);
+                       res = sip_tcptls_read(&req, tcptls_session, authenticated, start);
+                       if (res < 0) {
+@@ -3111,7 +3100,7 @@ static void *_sip_tcp_helper_thread(stru
+                               ao2_unlock(me);
+                               if (packet) {
+-                                      if (ast_tcptls_server_write(tcptls_session, ast_str_buffer(packet->data), packet->len) == -1) {
++                                      if (ast_iostream_write(tcptls_session->stream, ast_str_buffer(packet->data), packet->len) == -1) {
+                                               ast_log(LOG_WARNING, "Failure to write to tcp/tls socket\n");
+                                       }
+                                       ao2_t_ref(packet, -1, "tcptls packet sent, this is no longer needed");
+@@ -3123,7 +3112,7 @@ static void *_sip_tcp_helper_thread(stru
+               }
+       }
+-      ast_debug(2, "Shutting down thread for %s server\n", tcptls_session->ssl ? "TLS" : "TCP");
++      ast_debug(2, "Shutting down thread for %s server\n", ast_iostream_get_ssl(tcptls_session->stream) ? "TLS" : "TCP");
+ cleanup:
+       if (tcptls_session && !tcptls_session->client && !authenticated) {
+@@ -29178,9 +29167,8 @@ static int sip_prepare_socket(struct sip
+               return s->fd;
+       }
+       if ((s->type & (AST_TRANSPORT_TCP | AST_TRANSPORT_TLS)) &&
+-                      (s->tcptls_session) &&
+-                      (s->tcptls_session->fd != -1)) {
+-              return s->tcptls_session->fd;
++                      s->tcptls_session) {
++              return ast_iostream_get_fd(s->tcptls_session->stream);
+       }
+       if ((s->type & (AST_TRANSPORT_WS | AST_TRANSPORT_WSS))) {
+               return s->ws_session ? ast_websocket_fd(s->ws_session) : -1;
+@@ -29210,7 +29198,7 @@ static int sip_prepare_socket(struct sip
+       /* 1.  check for existing threads */
+       ast_sockaddr_copy(&sa_tmp, sip_real_dst(p));
+       if ((tcptls_session = sip_tcp_locate(&sa_tmp))) {
+-              s->fd = tcptls_session->fd;
++              s->fd = ast_iostream_get_fd(tcptls_session->stream);
+               if (s->tcptls_session) {
+                       ao2_ref(s->tcptls_session, -1);
+                       s->tcptls_session = NULL;
+@@ -29268,7 +29256,7 @@ static int sip_prepare_socket(struct sip
+               goto create_tcptls_session_fail;
+       }
+-      s->fd = s->tcptls_session->fd;
++      s->fd = ast_iostream_get_fd(s->tcptls_session->stream);
+       /* client connections need to have the sip_threadinfo object created before
+        * the thread is detached.  This ensures the alert_pipe is up before it will
+@@ -30070,8 +30058,7 @@ static int sip_send_keepalive(const void
+       if ((peer->socket.fd != -1) && (peer->socket.type == AST_TRANSPORT_UDP)) {
+               res = ast_sendto(peer->socket.fd, keepalive, sizeof(keepalive), 0, &peer->addr);
+       } else if ((peer->socket.type & (AST_TRANSPORT_TCP | AST_TRANSPORT_TLS)) &&
+-                 (peer->socket.tcptls_session) &&
+-                 (peer->socket.tcptls_session->fd != -1)) {
++                 peer->socket.tcptls_session) {
+               res = sip_tcptls_write(peer->socket.tcptls_session, keepalive, sizeof(keepalive));
+       } else if (peer->socket.type == AST_TRANSPORT_UDP) {
+               res = ast_sendto(sipsock, keepalive, sizeof(keepalive), 0, &peer->addr);
+--- a/configure.ac
++++ b/configure.ac
+@@ -823,10 +823,6 @@ AC_ARG_ENABLE([asteriskssl],
+       esac], [AST_ASTERISKSSL=yes])
+ AC_SUBST(AST_ASTERISKSSL)
+-# https support (in main/http.c) uses funopen on BSD systems,
+-# fopencookie on linux
+-AC_CHECK_FUNCS([funopen fopencookie])
+-
+ AC_CHECK_FUNCS([inet_aton])
+ # check if we have IP_PKTINFO constant defined
+--- /dev/null
++++ b/include/asterisk/iostream.h
+@@ -0,0 +1,118 @@
++/*
++ * Asterisk -- An open source telephony toolkit.
++ *
++ * Copyright (C) 1999 - 2015, Digium, Inc.
++ *
++ * Timo Teräs <timo.teras@iki.fi>
++ *
++ * See http://www.asterisk.org for more information about
++ * the Asterisk project. Please do not directly contact
++ * any of the maintainers of this project for assistance;
++ * the project provides a web site, mailing lists and IRC
++ * channels for your use.
++ *
++ * This program is free software, distributed under the terms of
++ * the GNU General Public License Version 2. See the LICENSE file
++ * at the top of the source tree.
++ */
++
++#ifndef _ASTERISK_IOSTREAM_H
++#define _ASTERISK_IOSTREAM_H
++
++/*!
++ * \file iostream.h
++ *
++ * \brief Generic abstraction for input/output streams.
++ */
++
++#if defined(HAVE_OPENSSL)
++#define DO_SSL  /* comment in/out if you want to support ssl */
++#endif
++
++#ifdef DO_SSL
++#include <openssl/ssl.h>
++#include <openssl/err.h>
++#include <openssl/x509v3.h>
++#else
++/* declare dummy types so we can define a pointer to them */
++typedef struct {} SSL;
++typedef struct {} SSL_CTX;
++#endif /* DO_SSL */
++
++struct ast_iostream;
++
++/*!
++ * \brief Disable the iostream timeout timer.
++ *
++ * \param stream iostream control data.
++ *
++ * \return Nothing
++ */
++void ast_iostream_set_timeout_disable(struct ast_iostream *stream);
++
++/*!
++ * \brief Set the iostream inactivity timeout timer.
++ *
++ * \param stream iostream control data.
++ * \param timeout Number of milliseconds to wait for data transfer with the peer.
++ *
++ * \details This is basically how much time we are willing to spend
++ * in an I/O call before we declare the peer unresponsive.
++ *
++ * \note Setting timeout to -1 disables the timeout.
++ * \note Setting this timeout replaces the I/O sequence timeout timer.
++ *
++ * \return Nothing
++ */
++void ast_iostream_set_timeout_inactivity(struct ast_iostream *stream, int timeout);
++
++void ast_iostream_set_timeout_idle_inactivity(struct ast_iostream *stream, int timeout, int timeout_reset);
++
++/*!
++ * \brief Set the iostream I/O sequence timeout timer.
++ *
++ * \param stream iostream control data.
++ * \param start Time the I/O sequence timer starts.
++ * \param timeout Number of milliseconds from the start time before timeout.
++ *
++ * \details This is how much time are we willing to allow the peer
++ * to complete an operation that can take several I/O calls.  The
++ * main use is as an authentication timer with us.
++ *
++ * \note Setting timeout to -1 disables the timeout.
++ * \note Setting this timeout replaces the inactivity timeout timer.
++ *
++ * \return Nothing
++ */
++void ast_iostream_set_timeout_sequence(struct ast_iostream *stream, struct timeval start, int timeout);
++
++/*!
++ * \brief Set the iostream if it can exclusively depend upon the set timeouts.
++ *
++ * \param stream iostream control data.
++ * \param exclusive_input TRUE if stream can exclusively wait for fd input.
++ * Otherwise, the stream will not wait for fd input.  It will wait while
++ * trying to send data.
++ *
++ * \note The stream timeouts still need to be set.
++ *
++ * \return Nothing
++ */
++void ast_iostream_set_exclusive_input(struct ast_iostream *stream, int exclusive_input);
++
++int ast_iostream_get_fd(struct ast_iostream *stream);
++void ast_iostream_nonblock(struct ast_iostream *stream);
++
++SSL* ast_iostream_get_ssl(struct ast_iostream *stream);
++
++ssize_t ast_iostream_read(struct ast_iostream *stream, void *buf, size_t count);
++ssize_t ast_iostream_gets(struct ast_iostream *stream, char *buf, size_t count);
++ssize_t ast_iostream_discard(struct ast_iostream *stream, size_t count);
++ssize_t ast_iostream_write(struct ast_iostream *stream, const void *buf, size_t count);
++ssize_t ast_iostream_printf(struct ast_iostream *stream, const void *fmt, ...);
++
++struct ast_iostream* ast_iostream_from_fd(int *fd);
++int ast_iostream_start_tls(struct ast_iostream **stream, SSL_CTX *ctx, int client);
++int ast_iostream_close(struct ast_iostream *stream);
++
++#endif /* _ASTERISK_IOSTREAM_H */
+--- a/include/asterisk/tcptls.h
++++ b/include/asterisk/tcptls.h
+@@ -57,20 +57,7 @@
+ #include "asterisk/netsock2.h"
+ #include "asterisk/utils.h"
+-
+-#if defined(HAVE_OPENSSL) && (defined(HAVE_FUNOPEN) || defined(HAVE_FOPENCOOKIE))
+-#define DO_SSL  /* comment in/out if you want to support ssl */
+-#endif
+-
+-#ifdef DO_SSL
+-#include <openssl/ssl.h>
+-#include <openssl/err.h>
+-#include <openssl/x509v3.h>
+-#else
+-/* declare dummy types so we can define a pointer to them */
+-typedef struct {} SSL;
+-typedef struct {} SSL_CTX;
+-#endif /* DO_SSL */
++#include "asterisk/iostream.h"
+ /*! SSL support */
+ #define AST_CERTFILE "asterisk.pem"
+@@ -157,72 +144,10 @@ struct ast_tcptls_session_args {
+       struct ast_tls_config *old_tls_cfg; /*!< copy of the SSL configuration to determine whether changes have been made */
+ };
+-struct ast_tcptls_stream;
+-
+-/*!
+- * \brief Disable the TCP/TLS stream timeout timer.
+- *
+- * \param stream TCP/TLS stream control data.
+- *
+- * \return Nothing
+- */
+-void ast_tcptls_stream_set_timeout_disable(struct ast_tcptls_stream *stream);
+-
+-/*!
+- * \brief Set the TCP/TLS stream inactivity timeout timer.
+- *
+- * \param stream TCP/TLS stream control data.
+- * \param timeout Number of milliseconds to wait for data transfer with the peer.
+- *
+- * \details This is basically how much time we are willing to spend
+- * in an I/O call before we declare the peer unresponsive.
+- *
+- * \note Setting timeout to -1 disables the timeout.
+- * \note Setting this timeout replaces the I/O sequence timeout timer.
+- *
+- * \return Nothing
+- */
+-void ast_tcptls_stream_set_timeout_inactivity(struct ast_tcptls_stream *stream, int timeout);
+-
+-/*!
+- * \brief Set the TCP/TLS stream I/O sequence timeout timer.
+- *
+- * \param stream TCP/TLS stream control data.
+- * \param start Time the I/O sequence timer starts.
+- * \param timeout Number of milliseconds from the start time before timeout.
+- *
+- * \details This is how much time are we willing to allow the peer
+- * to complete an operation that can take several I/O calls.  The
+- * main use is as an authentication timer with us.
+- *
+- * \note Setting timeout to -1 disables the timeout.
+- * \note Setting this timeout replaces the inactivity timeout timer.
+- *
+- * \return Nothing
+- */
+-void ast_tcptls_stream_set_timeout_sequence(struct ast_tcptls_stream *stream, struct timeval start, int timeout);
+-
+-/*!
+- * \brief Set the TCP/TLS stream I/O if it can exclusively depend upon the set timeouts.
+- *
+- * \param stream TCP/TLS stream control data.
+- * \param exclusive_input TRUE if stream can exclusively wait for fd input.
+- * Otherwise, the stream will not wait for fd input.  It will wait while
+- * trying to send data.
+- *
+- * \note The stream timeouts still need to be set.
+- *
+- * \return Nothing
+- */
+-void ast_tcptls_stream_set_exclusive_input(struct ast_tcptls_stream *stream, int exclusive_input);
+-
+ /*! \brief
+  * describes a server instance
+  */
+ struct ast_tcptls_session_instance {
+-      FILE *f;    /*!< fopen/funopen result */
+-      int fd;     /*!< the socket returned by accept() */
+-      SSL *ssl;   /*!< ssl state */
+       int client;
+       struct ast_sockaddr remote_address;
+       struct ast_tcptls_session_args *parent;
+@@ -232,20 +157,12 @@ struct ast_tcptls_session_instance {
+        * extra data.
+        */
+       struct ast_str *overflow_buf;
+-      /*! ao2 FILE stream cookie object associated with f. */
+-      struct ast_tcptls_stream *stream_cookie;
++      /*! ao2 stream object associated with this session. */
++      struct ast_iostream *stream;
+       /*! ao2 object private data of parent->worker_fn */
+       void *private_data;
+ };
+-#if defined(HAVE_FUNOPEN)
+-#define HOOK_T int
+-#define LEN_T int
+-#else
+-#define HOOK_T ssize_t
+-#define LEN_T size_t
+-#endif
+-
+ /*! 
+   * \brief attempts to connect and start tcptls session, on error the tcptls_session's
+   * ref count is decremented, fd and file are closed, and NULL is returned.
+@@ -301,7 +218,4 @@ void ast_ssl_teardown(struct ast_tls_con
+  */
+ int ast_tls_read_conf(struct ast_tls_config *tls_cfg, struct ast_tcptls_session_args *tls_desc, const char *varname, const char *value);
+-HOOK_T ast_tcptls_server_read(struct ast_tcptls_session_instance *ser, void *buf, size_t count);
+-HOOK_T ast_tcptls_server_write(struct ast_tcptls_session_instance *ser, const void *buf, size_t count);
+-
+ #endif /* _ASTERISK_TCPTLS_H */
+--- a/main/http.c
++++ b/main/http.c
+@@ -451,11 +451,14 @@ void ast_http_send(struct ast_tcptls_ses
+       struct timeval now = ast_tvnow();
+       struct ast_tm tm;
+       char timebuf[80];
++      char buf[256];
++      int len;
+       int content_length = 0;
+       int close_connection;
+       struct ast_str *server_header_field = ast_str_create(MAX_SERVER_NAME_LENGTH);
++      int send_content;
+-      if (!ser || !ser->f || !server_header_field) {
++      if (!ser || !server_header_field) {
+               /* The connection is not open. */
+               ast_free(http_header);
+               ast_free(out);
+@@ -504,8 +507,10 @@ void ast_http_send(struct ast_tcptls_ses
+               lseek(fd, 0, SEEK_SET);
+       }
++      send_content = method != AST_HTTP_HEAD || status_code >= 400;
++
+       /* send http header */
+-      fprintf(ser->f,
++      ast_iostream_printf(ser->stream,
+               "HTTP/1.1 %d %s\r\n"
+               "%s"
+               "Date: %s\r\n"
+@@ -513,43 +518,25 @@ void ast_http_send(struct ast_tcptls_ses
+               "%s"
+               "%s"
+               "Content-Length: %d\r\n"
+-              "\r\n",
++              "\r\n"
++              "%s",
+               status_code, status_title ? status_title : "OK",
+               ast_str_buffer(server_header_field),
+               timebuf,
+               close_connection ? "Connection: close\r\n" : "",
+               static_content ? "" : "Cache-Control: no-cache, no-store\r\n",
+               http_header ? ast_str_buffer(http_header) : "",
+-              content_length
++              content_length,
++              send_content && out && ast_str_strlen(out) ? ast_str_buffer(out) : ""
+               );
+       /* send content */
+-      if (method != AST_HTTP_HEAD || status_code >= 400) {
+-              if (out && ast_str_strlen(out)) {
+-                      /*
+-                       * NOTE: Because ser->f is a non-standard FILE *, fwrite() will probably not
+-                       * behave exactly as documented.
+-                       */
+-                      if (fwrite(ast_str_buffer(out), ast_str_strlen(out), 1, ser->f) != 1) {
+-                              ast_log(LOG_ERROR, "fwrite() failed: %s\n", strerror(errno));
++      if (send_content && fd) {
++              while ((len = read(fd, buf, sizeof(buf))) > 0) {
++                      if (ast_iostream_write(ser->stream, buf, len) != len) {
++                              ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
+                               close_connection = 1;
+-                      }
+-              }
+-
+-              if (fd) {
+-                      char buf[256];
+-                      int len;
+-
+-                      while ((len = read(fd, buf, sizeof(buf))) > 0) {
+-                              /*
+-                               * NOTE: Because ser->f is a non-standard FILE *, fwrite() will probably not
+-                               * behave exactly as documented.
+-                               */
+-                              if (fwrite(buf, len, 1, ser->f) != 1) {
+-                                      ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
+-                                      close_connection = 1;
+-                                      break;
+-                              }
++                              break;
+                       }
+               }
+       }
+@@ -577,7 +564,7 @@ void ast_http_create_response(struct ast
+               ast_free(http_header_data);
+               ast_free(server_address);
+               ast_free(out);
+-              if (ser && ser->f) {
++              if (ser) {
+                       ast_debug(1, "HTTP closing session. OOM.\n");
+                       ast_tcptls_close_session_file(ser);
+               }
+@@ -931,14 +918,9 @@ static int http_body_read_contents(struc
+ {
+       int res;
+-      /*
+-       * NOTE: Because ser->f is a non-standard FILE *, fread() does not behave as
+-       * documented.
+-       */
+-
+-      /* Stay in fread until get all the expected data or timeout. */
+-      res = fread(buf, length, 1, ser->f);
+-      if (res < 1) {
++      /* Stream is in exclusive mode so we get it all if possible. */
++      res = ast_iostream_read(ser->stream, buf, length);
++      if (res < length) {
+               ast_log(LOG_WARNING, "Short HTTP request %s (Wanted %d)\n",
+                       what_getting, length);
+               return -1;
+@@ -960,28 +942,12 @@ static int http_body_read_contents(struc
+  */
+ static int http_body_discard_contents(struct ast_tcptls_session_instance *ser, int length, const char *what_getting)
+ {
+-      int res;
+-      char buf[MAX_HTTP_LINE_LENGTH];/* Discard buffer */
+-
+-      /*
+-       * NOTE: Because ser->f is a non-standard FILE *, fread() does not behave as
+-       * documented.
+-       */
++      ssize_t res;
+-      /* Stay in fread until get all the expected data or timeout. */
+-      while (sizeof(buf) < length) {
+-              res = fread(buf, sizeof(buf), 1, ser->f);
+-              if (res < 1) {
+-                      ast_log(LOG_WARNING, "Short HTTP request %s (Wanted %zu of remaining %d)\n",
+-                              what_getting, sizeof(buf), length);
+-                      return -1;
+-              }
+-              length -= sizeof(buf);
+-      }
+-      res = fread(buf, length, 1, ser->f);
+-      if (res < 1) {
+-              ast_log(LOG_WARNING, "Short HTTP request %s (Wanted %d of remaining %d)\n",
+-                      what_getting, length, length);
++      res = ast_iostream_discard(ser->stream, length);
++      if (res < length) {
++              ast_log(LOG_WARNING, "Short HTTP request %s (Wanted %d but got %zd)\n",
++                      what_getting, length, res);
+               return -1;
+       }
+       return 0;
+@@ -1057,7 +1023,7 @@ static int http_body_get_chunk_length(st
+       char header_line[MAX_HTTP_LINE_LENGTH];
+       /* get the line of hexadecimal giving chunk-size w/ optional chunk-extension */
+-      if (!fgets(header_line, sizeof(header_line), ser->f)) {
++      if (ast_iostream_gets(ser->stream, header_line, sizeof(header_line)) <= 0) {
+               ast_log(LOG_WARNING, "Short HTTP read of chunked header\n");
+               return -1;
+       }
+@@ -1090,8 +1056,8 @@ static int http_body_check_chunk_sync(st
+        */
+       /* Stay in fread until get the expected CRLF or timeout. */
+-      res = fread(chunk_sync, sizeof(chunk_sync), 1, ser->f);
+-      if (res < 1) {
++      res = ast_iostream_read(ser->stream, chunk_sync, sizeof(chunk_sync));
++      if (res < sizeof(chunk_sync)) {
+               ast_log(LOG_WARNING, "Short HTTP chunk sync read (Wanted %zu)\n",
+                       sizeof(chunk_sync));
+               return -1;
+@@ -1120,7 +1086,7 @@ static int http_body_discard_chunk_trail
+       char header_line[MAX_HTTP_LINE_LENGTH];
+       for (;;) {
+-              if (!fgets(header_line, sizeof(header_line), ser->f)) {
++              if (ast_iostream_gets(ser->stream, header_line, sizeof(header_line)) <= 0) {
+                       ast_log(LOG_WARNING, "Short HTTP read of chunked trailer header\n");
+                       return -1;
+               }
+@@ -1783,7 +1749,7 @@ static int http_request_headers_get(stru
+               char *name;
+               char *value;
+-              if (!fgets(header_line, sizeof(header_line), ser->f)) {
++              if (ast_iostream_gets(ser->stream, header_line, sizeof(header_line)) <= 0) {
+                       ast_http_error(ser, 400, "Bad Request", "Timeout");
+                       return -1;
+               }
+@@ -1857,7 +1823,7 @@ static int httpd_process_request(struct
+       int res;
+       char request_line[MAX_HTTP_LINE_LENGTH];
+-      if (!fgets(request_line, sizeof(request_line), ser->f)) {
++      if (ast_iostream_gets(ser->stream, request_line, sizeof(request_line)) <= 0) {
+               return -1;
+       }
+@@ -1941,7 +1907,7 @@ static void *httpd_helper_thread(void *d
+       int flags = 1;
+       int timeout;
+-      if (!ser || !ser->f) {
++      if (!ser) {
+               ao2_cleanup(ser);
+               return NULL;
+       }
+@@ -1958,14 +1924,11 @@ static void *httpd_helper_thread(void *d
+        * This is necessary to prevent delays (caused by buffering) as we
+        * write to the socket in bits and pieces.
+        */
+-      if (setsockopt(ser->fd, IPPROTO_TCP, TCP_NODELAY, (char *) &flags, sizeof(flags)) < 0) {
++      if (setsockopt(ast_iostream_get_fd(ser->stream), IPPROTO_TCP, TCP_NODELAY, (char *) &flags, sizeof(flags)) < 0) {
+               ast_log(LOG_WARNING, "Failed to set TCP_NODELAY on HTTP connection: %s\n", strerror(errno));
++              ast_log(LOG_WARNING, "Some HTTP requests may be slow to respond.\n");
+       }
+-
+-      /* make sure socket is non-blocking */
+-      flags = fcntl(ser->fd, F_GETFL);
+-      flags |= O_NONBLOCK;
+-      fcntl(ser->fd, F_SETFL, flags);
++      ast_iostream_nonblock(ser->stream);
+       /* Setup HTTP worker private data to keep track of request body reading. */
+       ao2_cleanup(ser->private_data);
+@@ -1988,23 +1951,17 @@ static void *httpd_helper_thread(void *d
+       }
+       /* We can let the stream wait for data to arrive. */
+-      ast_tcptls_stream_set_exclusive_input(ser->stream_cookie, 1);
++      ast_iostream_set_exclusive_input(ser->stream, 1);
+       for (;;) {
+-              int ch;
+-
+               /* Wait for next potential HTTP request message. */
+-              ast_tcptls_stream_set_timeout_inactivity(ser->stream_cookie, timeout);
+-              ch = fgetc(ser->f);
+-              if (ch == EOF || ungetc(ch, ser->f) == EOF) {
+-                      /* Between request idle timeout */
+-                      ast_debug(1, "HTTP idle timeout or peer closed connection.\n");
++              ast_iostream_set_timeout_idle_inactivity(ser->stream, timeout, session_inactivity);
++              if (httpd_process_request(ser)) {
++                      /* Break the connection or the connection closed */
+                       break;
+               }
+-
+-              ast_tcptls_stream_set_timeout_inactivity(ser->stream_cookie, session_inactivity);
+-              if (httpd_process_request(ser) || !ser->f || feof(ser->f)) {
+-                      /* Break the connection or the connection closed */
++              if (!ser->stream) {
++                      /* Web-socket or similar that took the connection */
+                       break;
+               }
+@@ -2018,10 +1975,9 @@ static void *httpd_helper_thread(void *d
+ done:
+       ast_atomic_fetchadd_int(&session_count, -1);
+-      if (ser->f) {
+-              ast_debug(1, "HTTP closing session.  Top level\n");
+-              ast_tcptls_close_session_file(ser);
+-      }
++      ast_debug(1, "HTTP closing session.  Top level\n");
++      ast_tcptls_close_session_file(ser);
++
+       ao2_ref(ser, -1);
+       return NULL;
+ }
+--- /dev/null
++++ b/main/iostream.c
+@@ -0,0 +1,604 @@
++/*
++ * Asterisk -- An open source telephony toolkit.
++ *
++ * Copyright (C) 1999 - 2015, Digium, Inc.
++ *
++ * Timo Teräs <timo.teras@iki.fi>
++ *
++ * See http://www.asterisk.org for more information about
++ * the Asterisk project. Please do not directly contact
++ * any of the maintainers of this project for assistance;
++ * the project provides a web site, mailing lists and IRC
++ * channels for your use.
++ *
++ * This program is free software, distributed under the terms of
++ * the GNU General Public License Version 2. See the LICENSE file
++ * at the top of the source tree.
++ */
++
++#include "asterisk.h"
++
++#include <fcntl.h>
++#include <stdarg.h>
++
++#include "asterisk/utils.h"
++#include "asterisk/astobj2.h"
++#include "asterisk/iostream.h"
++
++struct ast_iostream {
++      SSL *ssl;
++      struct timeval start;
++      int fd;
++      int timeout;
++      int timeout_reset;
++      int exclusive_input;
++      int rbuflen;
++      char *rbufhead;
++      char rbuf[2048];
++};
++
++#if defined(DO_SSL)
++AST_THREADSTORAGE(err2str_threadbuf);
++#define ERR2STR_BUFSIZE   128
++
++static const char *ssl_error_to_string(int sslerr, int ret)
++{
++      switch (sslerr) {
++      case SSL_ERROR_SSL:
++              return "Internal SSL error";
++      case SSL_ERROR_SYSCALL:
++              if (!ret) {
++                      return "System call EOF";
++              } else if (ret == -1) {
++                      char *buf;
++
++                      buf = ast_threadstorage_get(&err2str_threadbuf, ERR2STR_BUFSIZE);
++                      if (!buf) {
++                              return "Unknown";
++                      }
++
++                      snprintf(buf, ERR2STR_BUFSIZE, "Underlying BIO error: %s", strerror(errno));
++                      return buf;
++              } else {
++                      return "System call other";
++              }
++      default:
++              break;
++      }
++
++      return "Unknown";
++}
++#endif
++
++int ast_iostream_get_fd(struct ast_iostream *stream)
++{
++      return stream->fd;
++}
++
++void ast_iostream_nonblock(struct ast_iostream *stream)
++{
++      fcntl(stream->fd, F_SETFL, fcntl(stream->fd, F_GETFL) | O_NONBLOCK);
++}
++
++SSL *ast_iostream_get_ssl(struct ast_iostream *stream)
++{
++      return stream->ssl;
++}
++
++void ast_iostream_set_timeout_disable(struct ast_iostream *stream)
++{
++      ast_assert(stream != NULL);
++
++      stream->timeout = -1;
++      stream->timeout_reset = -1;
++}
++
++void ast_iostream_set_timeout_inactivity(struct ast_iostream *stream, int timeout)
++{
++      ast_assert(stream != NULL);
++
++      stream->start.tv_sec = 0;
++      stream->timeout = timeout;
++      stream->timeout_reset = timeout;
++}
++
++void ast_iostream_set_timeout_idle_inactivity(struct ast_iostream *stream, int timeout, int timeout_reset)
++{
++      ast_assert(stream != NULL);
++
++      stream->start.tv_sec = 0;
++      stream->timeout = timeout;
++      stream->timeout_reset = timeout_reset;
++}
++
++void ast_iostream_set_timeout_sequence(struct ast_iostream *stream, struct timeval start, int timeout)
++{
++      ast_assert(stream != NULL);
++
++      stream->start = start;
++      stream->timeout = timeout;
++      stream->timeout_reset = timeout;
++}
++
++void ast_iostream_set_exclusive_input(struct ast_iostream *stream, int exclusive_input)
++{
++      ast_assert(stream != NULL);
++
++      stream->exclusive_input = exclusive_input;
++}
++
++static ssize_t iostream_read(struct ast_iostream *stream, void *buf, size_t size)
++{
++      struct timeval start;
++      int ms;
++      int res;
++
++      if (stream->start.tv_sec) {
++              start = stream->start;
++      } else {
++              start = ast_tvnow();
++      }
++
++#if defined(DO_SSL)
++      if (stream->ssl) {
++              for (;;) {
++                      int sslerr;
++                      char err[256];
++                      res = SSL_read(stream->ssl, buf, size);
++                      if (0 < res) {
++                              /* We read some payload data. */
++                              stream->timeout = stream->timeout_reset;
++                              return res;
++                      }
++                      sslerr = SSL_get_error(stream->ssl, res);
++                      switch (sslerr) {
++                      case SSL_ERROR_ZERO_RETURN:
++                              /* Report EOF for a shutdown */
++                              ast_debug(1, "TLS clean shutdown alert reading data\n");
++                              return 0;
++                      case SSL_ERROR_WANT_READ:
++                              if (!stream->exclusive_input) {
++                                      /* We cannot wait for data now. */
++                                      errno = EAGAIN;
++                                      return -1;
++                              }
++                              while ((ms = ast_remaining_ms(start, stream->timeout))) {
++                                      res = ast_wait_for_input(stream->fd, ms);
++                                      if (0 < res) {
++                                              /* Socket is ready to be read. */
++                                              break;
++                                      }
++                                      if (res < 0) {
++                                              if (errno == EINTR || errno == EAGAIN) {
++                                                      /* Try again. */
++                                                      continue;
++                                              }
++                                              ast_debug(1, "TLS socket error waiting for read data: %s\n",
++                                                      strerror(errno));
++                                              return -1;
++                                      }
++                              }
++                              break;
++                      case SSL_ERROR_WANT_WRITE:
++                              while ((ms = ast_remaining_ms(start, stream->timeout))) {
++                                      res = ast_wait_for_output(stream->fd, ms);
++                                      if (0 < res) {
++                                              /* Socket is ready to be written. */
++                                              break;
++                                      }
++                                      if (res < 0) {
++                                              if (errno == EINTR || errno == EAGAIN) {
++                                                      /* Try again. */
++                                                      continue;
++                                              }
++                                              ast_debug(1, "TLS socket error waiting for write space: %s\n",
++                                                      strerror(errno));
++                                              return -1;
++                                      }
++                              }
++                              break;
++                      default:
++                              /* Report EOF for an undecoded SSL or transport error. */
++                              ast_debug(1, "TLS transport or SSL error reading data:  %s, %s\n", ERR_error_string(sslerr, err),
++                                      ssl_error_to_string(sslerr, res));
++                              return 0;
++                      }
++                      if (!ms) {
++                              /* Report EOF for a timeout */
++                              ast_debug(1, "TLS timeout reading data\n");
++                              return 0;
++                      }
++              }
++      }
++#endif        /* defined(DO_SSL) */
++
++      for (;;) {
++              res = read(stream->fd, buf, size);
++              if (0 <= res) {
++                      /* Got data or we cannot wait for it. */
++                      stream->timeout = stream->timeout_reset;
++                      return res;
++              }
++              if (!stream->exclusive_input) {
++                      return res;
++              }
++              if (errno != EINTR && errno != EAGAIN) {
++                      /* Not a retryable error. */
++                      ast_debug(1, "TCP socket error reading data: %s\n",
++                              strerror(errno));
++                      return -1;
++              }
++              ms = ast_remaining_ms(start, stream->timeout);
++              if (!ms) {
++                      /* Report EOF for a timeout */
++                      ast_debug(1, "TCP timeout reading data\n");
++                      return 0;
++              }
++              ast_wait_for_input(stream->fd, ms);
++      }
++}
++
++ssize_t ast_iostream_read(struct ast_iostream *stream, void *buf, size_t size)
++{
++      if (!size) {
++              /* You asked for no data you got no data. */
++              return 0;
++      }
++
++      if (!stream || stream->fd == -1) {
++              errno = EBADF;
++              return -1;
++      }
++
++      /* Get any remains from the read buffer */
++      if (stream->rbuflen) {
++              size_t r = size;
++              if (r > stream->rbuflen) {
++                      r = stream->rbuflen;
++              }
++              memcpy(buf, stream->rbufhead, r);
++              stream->rbuflen -= r;
++              stream->rbufhead += r;
++              return r;
++      }
++
++      return iostream_read(stream, buf, size);
++}
++
++ssize_t ast_iostream_gets(struct ast_iostream *stream, char *buf, size_t count)
++{
++      ssize_t r;
++      char *newline;
++
++      do {
++              /* Search for newline */
++              newline = memchr(stream->rbufhead, '\n', stream->rbuflen);
++              if (newline) {
++                      r = newline - stream->rbufhead + 1;
++                      if (r > count-1) {
++                              r = count-1;
++                      }
++                      break;
++              }
++
++              /* Enough data? */
++              if (stream->rbuflen >= count - 1) {
++                      r = count - 1;
++                      break;
++              }
++
++              /* Try to fill in line buffer */
++              if (stream->rbuflen && stream->rbuf != stream->rbufhead) {
++                      memmove(&stream->rbuf, stream->rbufhead, stream->rbuflen);
++              }
++              stream->rbufhead = stream->rbuf;
++
++              r = iostream_read(stream, stream->rbufhead + stream->rbuflen, sizeof(stream->rbuf) - stream->rbuflen);
++              if (r <= 0) {
++                      return r;
++              }
++              stream->rbuflen += r;
++      } while (1);
++
++      /* Return r bytes with termination byte */
++      memcpy(buf, stream->rbufhead, r);
++      buf[r] = 0;
++      stream->rbuflen -= r;
++      stream->rbufhead += r;
++
++      return r;
++}
++
++ssize_t ast_iostream_discard(struct ast_iostream *stream, size_t size)
++{
++      char buf[1024];
++      size_t remaining = size;
++      ssize_t ret;
++
++      while (remaining) {
++              ret = ast_iostream_read(stream, buf, remaining > sizeof(buf) ? sizeof(buf) : remaining);
++              if (ret < 0) {
++                      return ret;
++              }
++              remaining -= ret;
++      }
++
++      return size;
++}
++
++ssize_t ast_iostream_write(struct ast_iostream *stream, const void *buf, size_t size)
++{
++      struct timeval start;
++      int ms;
++      int res;
++      int written;
++      int remaining;
++
++      if (!size) {
++              /* You asked to write no data you wrote no data. */
++              return 0;
++      }
++
++      if (!stream || stream->fd == -1) {
++              errno = EBADF;
++              return -1;
++      }
++
++      if (stream->start.tv_sec) {
++              start = stream->start;
++      } else {
++              start = ast_tvnow();
++      }
++
++#if defined(DO_SSL)
++      if (stream->ssl) {
++              written = 0;
++              remaining = size;
++              for (;;) {
++                      int sslerr;
++                      char err[256];
++                      res = SSL_write(stream->ssl, buf + written, remaining);
++                      if (res == remaining) {
++                              /* Everything was written. */
++                              return size;
++                      }
++                      if (0 < res) {
++                              /* Successfully wrote part of the buffer.  Try to write the rest. */
++                              written += res;
++                              remaining -= res;
++                              continue;
++                      }
++                      sslerr = SSL_get_error(stream->ssl, res);
++                      switch (sslerr) {
++                      case SSL_ERROR_ZERO_RETURN:
++                              ast_debug(1, "TLS clean shutdown alert writing data\n");
++                              if (written) {
++                                      /* Report partial write. */
++                                      return written;
++                              }
++                              errno = EBADF;
++                              return -1;
++                      case SSL_ERROR_WANT_READ:
++                              ms = ast_remaining_ms(start, stream->timeout);
++                              if (!ms) {
++                                      /* Report partial write. */
++                                      ast_debug(1, "TLS timeout writing data (want read)\n");
++                                      return written;
++                              }
++                              ast_wait_for_input(stream->fd, ms);
++                              break;
++                      case SSL_ERROR_WANT_WRITE:
++                              ms = ast_remaining_ms(start, stream->timeout);
++                              if (!ms) {
++                                      /* Report partial write. */
++                                      ast_debug(1, "TLS timeout writing data (want write)\n");
++                                      return written;
++                              }
++                              ast_wait_for_output(stream->fd, ms);
++                              break;
++                      default:
++                              /* Undecoded SSL or transport error. */
++                              ast_debug(1, "TLS transport or SSL error writing data: %s, %s\n", ERR_error_string(sslerr, err),
++                                      ssl_error_to_string(sslerr, res));
++                              if (written) {
++                                      /* Report partial write. */
++                                      return written;
++                              }
++                              errno = EBADF;
++                              return -1;
++                      }
++              }
++      }
++#endif        /* defined(DO_SSL) */
++
++      written = 0;
++      remaining = size;
++      for (;;) {
++              res = write(stream->fd, buf + written, remaining);
++              if (res == remaining) {
++                      /* Yay everything was written. */
++                      return size;
++              }
++              if (0 < res) {
++                      /* Successfully wrote part of the buffer.  Try to write the rest. */
++                      written += res;
++                      remaining -= res;
++                      continue;
++              }
++              if (errno != EINTR && errno != EAGAIN) {
++                      /* Not a retryable error. */
++                      ast_debug(1, "TCP socket error writing: %s\n", strerror(errno));
++                      if (written) {
++                              return written;
++                      }
++                      return -1;
++              }
++              ms = ast_remaining_ms(start, stream->timeout);
++              if (!ms) {
++                      /* Report partial write. */
++                      ast_debug(1, "TCP timeout writing data\n");
++                      return written;
++              }
++              ast_wait_for_output(stream->fd, ms);
++      }
++}
++
++ssize_t ast_iostream_printf(struct ast_iostream *stream, const void *fmt, ...)
++{
++      char sbuf[512], *buf = sbuf;
++      int len, len2, ret = -1;
++      va_list va;
++
++      va_start(va, fmt);
++      len = vsnprintf(buf, sizeof(sbuf), fmt, va);
++      va_end(va);
++
++      if (len > sizeof(sbuf) - 1) {
++              /* Add one to the string length to accommodate the NULL byte */
++              size_t buf_len = len + 1;
++
++              buf = ast_malloc(buf_len);
++              if (!buf) {
++                      return -1;
++              }
++              va_start(va, fmt);
++              len2 = vsnprintf(buf, buf_len, fmt, va);
++              va_end(va);
++              if (len2 != len) {
++                      goto error;
++              }
++      }
++
++      if (ast_iostream_write(stream, buf, len) == len)
++              ret = len;
++
++error:
++      if (buf != sbuf) {
++              ast_free(buf);
++      }
++
++      return ret;
++}
++
++int ast_iostream_close(struct ast_iostream *stream)
++{
++      if (!stream) {
++              errno = EBADF;
++              return -1;
++      }
++
++      if (stream->fd != -1) {
++#if defined(DO_SSL)
++              if (stream->ssl) {
++                      int res;
++
++                      /*
++                       * According to the TLS standard, it is acceptable for an
++                       * application to only send its shutdown alert and then
++                       * close the underlying connection without waiting for
++                       * the peer's response (this way resources can be saved,
++                       * as the process can already terminate or serve another
++                       * connection).
++                       */
++                      res = SSL_shutdown(stream->ssl);
++                      if (res < 0) {
++                              int sslerr = SSL_get_error(stream->ssl, res);
++                              char err[256];
++                              ast_log(LOG_ERROR, "SSL_shutdown() failed: %s, %s\n",
++                                      ERR_error_string(sslerr, err), ssl_error_to_string(sslerr, res));
++                      }
++
++                      if (!stream->ssl->server) {
++                              /* For client threads, ensure that the error stack is cleared */
++                              ERR_remove_state(0);
++                      }
++
++                      SSL_free(stream->ssl);
++                      stream->ssl = NULL;
++              }
++#endif        /* defined(DO_SSL) */
++
++              /*
++               * Issuing shutdown() is necessary here to avoid a race
++               * condition where the last data written may not appear
++               * in the TCP stream.  See ASTERISK-23548
++               */
++              shutdown(stream->fd, SHUT_RDWR);
++              if (close(stream->fd)) {
++                      ast_log(LOG_ERROR, "close() failed: %s\n", strerror(errno));
++              }
++              stream->fd = -1;
++      }
++      ao2_t_ref(stream, -1, "Closed ast_iostream");
++
++      return 0;
++}
++
++static void iostream_dtor(void *cookie)
++{
++#ifdef AST_DEVMODE
++      /* Since the ast_assert below is the only one using stream,
++       * and ast_assert is only available with AST_DEVMODE, we
++       * put this in a conditional to avoid compiler warnings. */
++      struct ast_iostream *stream = cookie;
++#endif
++
++      ast_assert(stream->fd == -1);
++}
++
++struct ast_iostream *ast_iostream_from_fd(int *fd)
++{
++      struct ast_iostream *stream;
++
++      stream = ao2_alloc_options(sizeof(*stream), iostream_dtor,
++              AO2_ALLOC_OPT_LOCK_NOLOCK);
++      if (stream) {
++              stream->timeout = -1;
++              stream->timeout_reset = -1;
++              stream->fd = *fd;
++              *fd = -1;
++      }
++
++      return stream;
++}
++
++int ast_iostream_start_tls(struct ast_iostream **pstream, SSL_CTX *ssl_ctx, int client)
++{
++#ifdef DO_SSL
++      struct ast_iostream *stream = *pstream;
++      int (*ssl_setup)(SSL *) = client ? SSL_connect : SSL_accept;
++      int res;
++
++      stream->ssl = SSL_new(ssl_ctx);
++      if (!stream->ssl) {
++              ast_log(LOG_ERROR, "Unable to create new SSL connection\n");
++              errno = ENOMEM;
++              return -1;
++      }
++
++      /*
++       * This function takes struct ast_iostream **, so it can chain
++       * SSL over any ast_iostream. For now we assume it's a file descriptor.
++       * But later this should instead use BIO wrapper to tie SSL to another
++       * ast_iostream.
++       */
++      SSL_set_fd(stream->ssl, stream->fd);
++
++      res = ssl_setup(stream->ssl);
++      if (res <= 0) {
++              int sslerr = SSL_get_error(stream->ssl, res);
++              char err[256];
++
++              ast_log(LOG_ERROR, "Problem setting up ssl connection: %s, %s\n",
++                      ERR_error_string(sslerr, err), ssl_error_to_string(sslerr, res));
++              errno = EIO;
++              return -1;
++      }
++
++      return 0;
++#else
++      ast_log(LOG_ERROR, "SSL not enabled in this build\n");
++      errno = ENOTSUP;
++      return -1;
++#endif
++}
+--- a/main/manager.c
++++ b/main/manager.c
+@@ -1543,8 +1543,7 @@ static void acl_change_stasis_unsubscrib
+ struct mansession_session {
+                               /*! \todo XXX need to document which fields it is protecting */
+       struct ast_sockaddr addr;       /*!< address we are connecting from */
+-      FILE *f;                /*!< fdopen() on the underlying fd */
+-      int fd;                 /*!< descriptor used for output. Either the socket (AMI) or a temporary file (HTTP) */
++      struct ast_iostream *stream;    /*!< AMI stream */
+       int inuse;              /*!< number of HTTP sessions using this entry */
+       int needdestroy;        /*!< Whether an HTTP session should be destroyed */
+       pthread_t waiting_thread;       /*!< Sleeping thread using this descriptor */
+@@ -1586,9 +1585,8 @@ enum mansession_message_parsing {
+  */
+ struct mansession {
+       struct mansession_session *session;
++      struct ast_iostream *stream;
+       struct ast_tcptls_session_instance *tcptls_session;
+-      FILE *f;
+-      int fd;
+       enum mansession_message_parsing parsing;
+       int write_error:1;
+       struct manager_custom_hook *hook;
+@@ -2160,10 +2158,6 @@ static void session_destructor(void *obj
+               ast_datastore_free(datastore);
+       }
+-      if (session->f != NULL) {
+-              fflush(session->f);
+-              fclose(session->f);
+-      }
+       if (eqe) {
+               ast_atomic_fetchadd_int(&eqe->usecount, -1);
+       }
+@@ -2198,7 +2192,6 @@ static struct mansession_session *build_
+               return NULL;
+       }
+-      newsession->fd = -1;
+       newsession->waiting_thread = AST_PTHREADT_NULL;
+       newsession->writetimeout = 100;
+       newsession->send_events = -1;
+@@ -2611,7 +2604,7 @@ static char *handle_showmanconn(struct a
+                               ast_sockaddr_stringify_addr(&session->addr),
+                               (int) (session->sessionstart),
+                               (int) (now - session->sessionstart),
+-                              session->fd,
++                              session->stream ? ast_iostream_get_fd(session->stream) : -1,
+                               session->inuse,
+                               session->readperm,
+                               session->writeperm);
+@@ -2883,7 +2876,6 @@ int ast_hook_send_action(struct manager_
+                        * This is necessary to meet the previous design of manager.c
+                        */
+                       s.hook = hook;
+-                      s.f = (void*)1; /* set this to something so our request will make it through all functions that test it*/
+                       ao2_lock(act_found);
+                       if (act_found->registered && act_found->func) {
+@@ -2914,9 +2906,8 @@ int ast_hook_send_action(struct manager_
+  */
+ static int send_string(struct mansession *s, char *string)
+ {
+-      int res;
+-      FILE *f = s->f ? s->f : s->session->f;
+-      int fd = s->f ? s->fd : s->session->fd;
++      struct ast_iostream *stream = s->stream ? s->stream : s->session->stream;
++      int len, res;
+       /* It's a result from one of the hook's action invocation */
+       if (s->hook) {
+@@ -2928,7 +2919,12 @@ static int send_string(struct mansession
+               return 0;
+       }
+-      if ((res = ast_careful_fwrite(f, fd, string, strlen(string), s->session->writetimeout))) {
++      len = strlen(string);
++      ast_iostream_set_timeout_inactivity(stream, s->session->writetimeout);
++      res = ast_iostream_write(stream, string, len);
++      ast_iostream_set_timeout_disable(stream);
++
++      if (res < len) {
+               s->write_error = 1;
+       }
+@@ -2969,10 +2965,10 @@ void astman_append(struct mansession *s,
+               return;
+       }
+-      if (s->f != NULL || s->session->f != NULL) {
++      if (s->tcptls_session != NULL && s->tcptls_session->stream != NULL) {
+               send_string(s, ast_str_buffer(buf));
+       } else {
+-              ast_verbose("fd == -1 in astman_append, should not happen\n");
++              ast_verbose("No connection stream in astman_append, should not happen\n");
+       }
+ }
+@@ -4113,7 +4109,7 @@ static int action_waitevent(struct manse
+                       break;
+               }
+               if (s->session->managerid == 0) {       /* AMI session */
+-                      if (ast_wait_for_input(s->session->fd, 1000)) {
++                      if (ast_wait_for_input(ast_iostream_get_fd(s->session->stream), 1000)) {
+                               break;
+                       }
+               } else {        /* HTTP session */
+@@ -5896,7 +5892,7 @@ static int process_events(struct mansess
+       int ret = 0;
+       ao2_lock(s->session);
+-      if (s->session->f != NULL) {
++      if (s->session->stream != NULL) {
+               struct eventqent *eqe = s->session->last_ev;
+               while ((eqe = advance_event(eqe))) {
+@@ -6436,7 +6432,7 @@ static int get_input(struct mansession *
+               s->session->waiting_thread = pthread_self();
+               ao2_unlock(s->session);
+-              res = ast_wait_for_input(s->session->fd, timeout);
++              res = ast_wait_for_input(ast_iostream_get_fd(s->session->stream), timeout);
+               ao2_lock(s->session);
+               s->session->waiting_thread = AST_PTHREADT_NULL;
+@@ -6454,13 +6450,7 @@ static int get_input(struct mansession *
+       }
+       ao2_lock(s->session);
+-      /*
+-       * It is worth noting here that you can all but ignore fread()'s documentation
+-       * for the purposes of this call. The FILE * we are working with here was created
+-       * as a result of a call to fopencookie() (or equivalent) in tcptls.c, and as such
+-       * the behavior of fread() is not as documented. Frankly, I think this is gross.
+-       */
+-      res = fread(src + s->session->inlen, 1, maxlen - s->session->inlen, s->session->f);
++      res = ast_iostream_read(s->session->stream, src + s->session->inlen, maxlen - s->session->inlen);
+       if (res < 1) {
+               res = -1;       /* error return */
+       } else {
+@@ -6598,7 +6588,7 @@ static void *session_do(void *data)
+       struct ast_sockaddr ser_remote_address_tmp;
+       if (ast_atomic_fetchadd_int(&unauth_sessions, +1) >= authlimit) {
+-              fclose(ser->f);
++              ast_iostream_close(ser->stream);
+               ast_atomic_fetchadd_int(&unauth_sessions, -1);
+               goto done;
+       }
+@@ -6607,7 +6597,7 @@ static void *session_do(void *data)
+       session = build_mansession(&ser_remote_address_tmp);
+       if (session == NULL) {
+-              fclose(ser->f);
++              ast_iostream_close(ser->stream);
+               ast_atomic_fetchadd_int(&unauth_sessions, -1);
+               goto done;
+       }
+@@ -6615,14 +6605,10 @@ static void *session_do(void *data)
+       /* here we set TCP_NODELAY on the socket to disable Nagle's algorithm.
+        * This is necessary to prevent delays (caused by buffering) as we
+        * write to the socket in bits and pieces. */
+-      if (setsockopt(ser->fd, IPPROTO_TCP, TCP_NODELAY, (char *) &flags, sizeof(flags)) < 0) {
++      if (setsockopt(ast_iostream_get_fd(ser->stream), IPPROTO_TCP, TCP_NODELAY, (char *) &flags, sizeof(flags)) < 0) {
+               ast_log(LOG_WARNING, "Failed to set TCP_NODELAY on manager connection: %s\n", strerror(errno));
+       }
+-
+-      /* make sure socket is non-blocking */
+-      flags = fcntl(ser->fd, F_GETFL);
+-      flags |= O_NONBLOCK;
+-      fcntl(ser->fd, F_SETFL, flags);
++      ast_iostream_nonblock(ser->stream);
+       ao2_lock(session);
+       /* Hook to the tail of the event queue */
+@@ -6631,8 +6617,7 @@ static void *session_do(void *data)
+       ast_mutex_init(&s.lock);
+       /* these fields duplicate those in the 'ser' structure */
+-      session->fd = s.fd = ser->fd;
+-      session->f = s.f = ser->f;
++      session->stream = s.stream = ser->stream;
+       ast_sockaddr_copy(&session->addr, &ser_remote_address_tmp);
+       s.session = session;
+@@ -6651,9 +6636,9 @@ static void *session_do(void *data)
+        * We cannot let the stream exclusively wait for data to arrive.
+        * We have to wake up the task to send async events.
+        */
+-      ast_tcptls_stream_set_exclusive_input(ser->stream_cookie, 0);
++      ast_iostream_set_exclusive_input(ser->stream, 0);
+-      ast_tcptls_stream_set_timeout_sequence(ser->stream_cookie,
++      ast_iostream_set_timeout_sequence(ser->stream,
+               ast_tvnow(), authtimeout * 1000);
+       astman_append(&s, "Asterisk Call Manager/%s\r\n", AMI_VERSION); /* welcome prompt */
+@@ -6662,7 +6647,7 @@ static void *session_do(void *data)
+                       break;
+               }
+               if (session->authenticated) {
+-                      ast_tcptls_stream_set_timeout_disable(ser->stream_cookie);
++                      ast_iostream_set_timeout_disable(ser->stream);
+               }
+       }
+       /* session is over, explain why and terminate */
+@@ -7522,23 +7507,9 @@ static void xml_translate(struct ast_str
+ static void close_mansession_file(struct mansession *s)
+ {
+-      if (s->f) {
+-              if (fclose(s->f)) {
+-                      ast_log(LOG_ERROR, "fclose() failed: %s\n", strerror(errno));
+-              }
+-              s->f = NULL;
+-              s->fd = -1;
+-      } else if (s->fd != -1) {
+-              /*
+-               * Issuing shutdown() is necessary here to avoid a race
+-               * condition where the last data written may not appear
+-               * in the TCP stream.  See ASTERISK-23548
+-               */
+-              shutdown(s->fd, SHUT_RDWR);
+-              if (close(s->fd)) {
+-                      ast_log(LOG_ERROR, "close() failed: %s\n", strerror(errno));
+-              }
+-              s->fd = -1;
++      if (s->stream) {
++              ast_iostream_close(s->stream);
++              s->stream = NULL;
+       } else {
+               ast_log(LOG_ERROR, "Attempted to close file/file descriptor on mansession without a valid file or file descriptor.\n");
+       }
+@@ -7547,17 +7518,20 @@ static void close_mansession_file(struct
+ static void process_output(struct mansession *s, struct ast_str **out, struct ast_variable *params, enum output_format format)
+ {
+       char *buf;
+-      size_t l;
++      off_t l;
++      int fd;
+-      if (!s->f)
++      if (!s->stream)
+               return;
+       /* Ensure buffer is NULL-terminated */
+-      fprintf(s->f, "%c", 0);
+-      fflush(s->f);
++      ast_iostream_write(s->stream, "", 1);
++
++      fd = ast_iostream_get_fd(s->stream);
+-      if ((l = ftell(s->f)) > 0) {
+-              if (MAP_FAILED == (buf = mmap(NULL, l, PROT_READ | PROT_WRITE, MAP_PRIVATE, s->fd, 0))) {
++      l = lseek(fd, SEEK_CUR, 0);
++      if (l > 0) {
++              if (MAP_FAILED == (buf = mmap(NULL, l, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0))) {
+                       ast_log(LOG_WARNING, "mmap failed.  Manager output was not processed\n");
+               } else {
+                       if (format == FORMAT_XML || format == FORMAT_HTML) {
+@@ -7584,6 +7558,7 @@ static int generic_http_callback(struct
+       struct mansession s = { .session = NULL, .tcptls_session = ser };
+       struct mansession_session *session = NULL;
+       uint32_t ident;
++      int fd;
+       int blastaway = 0;
+       struct ast_variable *v;
+       struct ast_variable *params = get_params;
+@@ -7639,17 +7614,17 @@ static int generic_http_callback(struct
+       }
+       s.session = session;
+-      s.fd = mkstemp(template);       /* create a temporary file for command output */
++      fd = mkstemp(template); /* create a temporary file for command output */
+       unlink(template);
+-      if (s.fd <= -1) {
++      if (fd <= -1) {
+               ast_http_error(ser, 500, "Server Error", "Internal Server Error (mkstemp failed)");
+               goto generic_callback_out;
+       }
+-      s.f = fdopen(s.fd, "w+");
+-      if (!s.f) {
++      s.stream = ast_iostream_from_fd(&fd);
++      if (!s.stream) {
+               ast_log(LOG_WARNING, "HTTP Manager, fdopen failed: %s!\n", strerror(errno));
+               ast_http_error(ser, 500, "Server Error", "Internal Server Error (fdopen failed)");
+-              close(s.fd);
++              close(fd);
+               goto generic_callback_out;
+       }
+@@ -7789,9 +7764,9 @@ generic_callback_out:
+               if (blastaway) {
+                       session_destroy(session);
+               } else {
+-                      if (session->f) {
+-                              fclose(session->f);
+-                              session->f = NULL;
++                      if (session->stream) {
++                              ast_iostream_close(session->stream);
++                              session->stream = NULL;
+                       }
+                       unref_mansession(session);
+               }
+@@ -7816,6 +7791,7 @@ static int auth_http_callback(struct ast
+       struct message m = { 0 };
+       unsigned int idx;
+       size_t hdrlen;
++      int fd;
+       time_t time_now = time(NULL);
+       unsigned long nonce = 0, nc;
+@@ -7994,17 +7970,17 @@ static int auth_http_callback(struct ast
+       ast_mutex_init(&s.lock);
+       s.session = session;
+-      s.fd = mkstemp(template);       /* create a temporary file for command output */
++      fd = mkstemp(template); /* create a temporary file for command output */
+       unlink(template);
+-      if (s.fd <= -1) {
++      if (fd <= -1) {
+               ast_http_error(ser, 500, "Server Error", "Internal Server Error (mkstemp failed)");
+               goto auth_callback_out;
+       }
+-      s.f = fdopen(s.fd, "w+");
+-      if (!s.f) {
++      s.stream = ast_iostream_from_fd(&fd);
++      if (!s.stream) {
+               ast_log(LOG_WARNING, "HTTP Manager, fdopen failed: %s!\n", strerror(errno));
+               ast_http_error(ser, 500, "Server Error", "Internal Server Error (fdopen failed)");
+-              close(s.fd);
++              close(fd);
+               goto auth_callback_out;
+       }
+@@ -8055,7 +8031,7 @@ static int auth_http_callback(struct ast
+               m.headers[idx] = NULL;
+       }
+-      result_size = ftell(s.f); /* Calculate approx. size of result */
++      result_size = lseek(ast_iostream_get_fd(s.stream), SEEK_CUR, 0); /* Calculate approx. size of result */
+       http_header = ast_str_create(80);
+       out = ast_str_create(result_size * 2 + 512);
+@@ -8107,11 +8083,10 @@ auth_callback_out:
+       ast_free(out);
+       ao2_lock(session);
+-      if (session->f) {
+-              fclose(session->f);
++      if (session->stream) {
++              ast_iostream_close(session->stream);
++              session->stream = NULL;
+       }
+-      session->f = NULL;
+-      session->fd = -1;
+       ao2_unlock(session);
+       if (session->needdestroy) {
+--- a/main/tcptls.c
++++ b/main/tcptls.c
+@@ -52,559 +52,13 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revisi
+ #include "asterisk/pbx.h"
+ #include "asterisk/app.h"
+-/*! ao2 object used for the FILE stream fopencookie()/funopen() cookie. */
+-struct ast_tcptls_stream {
+-      /*! SSL state if not NULL */
+-      SSL *ssl;
+-      /*!
+-       * \brief Start time from when an I/O sequence must complete
+-       * by struct ast_tcptls_stream.timeout.
+-       *
+-       * \note If struct ast_tcptls_stream.start.tv_sec is zero then
+-       * start time is the current I/O request.
+-       */
+-      struct timeval start;
+-      /*!
+-       * \brief The socket returned by accept().
+-       *
+-       * \note Set to -1 if the stream is closed.
+-       */
+-      int fd;
+-      /*!
+-       * \brief Timeout in ms relative to struct ast_tcptls_stream.start
+-       * to wait for an event on struct ast_tcptls_stream.fd.
+-       *
+-       * \note Set to -1 to disable timeout.
+-       * \note The socket needs to be set to non-blocking for the timeout
+-       * feature to work correctly.
+-       */
+-      int timeout;
+-      /*! TRUE if stream can exclusively wait for fd input. */
+-      int exclusive_input;
+-};
+-
+-#if defined(DO_SSL)
+-AST_THREADSTORAGE(err2str_threadbuf);
+-#define ERR2STR_BUFSIZE   128
+-
+-static const char *ssl_error_to_string(int sslerr, int ret)
+-{
+-      switch (sslerr) {
+-      case SSL_ERROR_SSL:
+-              return "Internal SSL error";
+-      case SSL_ERROR_SYSCALL:
+-              if (!ret) {
+-                      return "System call EOF";
+-              } else if (ret == -1) {
+-                      char *buf;
+-
+-                      buf = ast_threadstorage_get(&err2str_threadbuf, ERR2STR_BUFSIZE);
+-                      if (!buf) {
+-                              return "Unknown";
+-                      }
+-
+-                      snprintf(buf, ERR2STR_BUFSIZE, "Underlying BIO error: %s", strerror(errno));
+-                      return buf;
+-              } else {
+-                      return "System call other";
+-              }
+-      default:
+-              break;
+-      }
+-
+-      return "Unknown";
+-}
+-#endif
+-
+-void ast_tcptls_stream_set_timeout_disable(struct ast_tcptls_stream *stream)
+-{
+-      ast_assert(stream != NULL);
+-
+-      stream->timeout = -1;
+-}
+-
+-void ast_tcptls_stream_set_timeout_inactivity(struct ast_tcptls_stream *stream, int timeout)
+-{
+-      ast_assert(stream != NULL);
+-
+-      stream->start.tv_sec = 0;
+-      stream->timeout = timeout;
+-}
+-
+-void ast_tcptls_stream_set_timeout_sequence(struct ast_tcptls_stream *stream, struct timeval start, int timeout)
+-{
+-      ast_assert(stream != NULL);
+-
+-      stream->start = start;
+-      stream->timeout = timeout;
+-}
+-
+-void ast_tcptls_stream_set_exclusive_input(struct ast_tcptls_stream *stream, int exclusive_input)
+-{
+-      ast_assert(stream != NULL);
+-
+-      stream->exclusive_input = exclusive_input;
+-}
+-
+-/*!
+- * \internal
+- * \brief fopencookie()/funopen() stream read function.
+- *
+- * \param cookie Stream control data.
+- * \param buf Where to put read data.
+- * \param size Size of the buffer.
+- *
+- * \retval number of bytes put into buf.
+- * \retval 0 on end of file.
+- * \retval -1 on error.
+- */
+-static HOOK_T tcptls_stream_read(void *cookie, char *buf, LEN_T size)
+-{
+-      struct ast_tcptls_stream *stream = cookie;
+-      struct timeval start;
+-      int ms;
+-      int res;
+-
+-      if (!size) {
+-              /* You asked for no data you got no data. */
+-              return 0;
+-      }
+-
+-      if (!stream || stream->fd == -1) {
+-              errno = EBADF;
+-              return -1;
+-      }
+-
+-      if (stream->start.tv_sec) {
+-              start = stream->start;
+-      } else {
+-              start = ast_tvnow();
+-      }
+-
+-#if defined(DO_SSL)
+-      if (stream->ssl) {
+-              for (;;) {
+-                      int sslerr;
+-                      char err[256];
+-
+-                      res = SSL_read(stream->ssl, buf, size);
+-                      if (0 < res) {
+-                              /* We read some payload data. */
+-                              return res;
+-                      }
+-
+-                      sslerr = SSL_get_error(stream->ssl, res);
+-                      switch (sslerr) {
+-                      case SSL_ERROR_ZERO_RETURN:
+-                              /* Report EOF for a shutdown */
+-                              ast_debug(1, "TLS clean shutdown alert reading data\n");
+-                              return 0;
+-                      case SSL_ERROR_WANT_READ:
+-                              if (!stream->exclusive_input) {
+-                                      /* We cannot wait for data now. */
+-                                      errno = EAGAIN;
+-                                      return -1;
+-                              }
+-                              while ((ms = ast_remaining_ms(start, stream->timeout))) {
+-                                      res = ast_wait_for_input(stream->fd, ms);
+-                                      if (0 < res) {
+-                                              /* Socket is ready to be read. */
+-                                              break;
+-                                      }
+-                                      if (res < 0) {
+-                                              if (errno == EINTR || errno == EAGAIN) {
+-                                                      /* Try again. */
+-                                                      continue;
+-                                              }
+-                                              ast_debug(1, "TLS socket error waiting for read data: %s\n",
+-                                                      strerror(errno));
+-                                              return -1;
+-                                      }
+-                              }
+-                              break;
+-                      case SSL_ERROR_WANT_WRITE:
+-                              while ((ms = ast_remaining_ms(start, stream->timeout))) {
+-                                      res = ast_wait_for_output(stream->fd, ms);
+-                                      if (0 < res) {
+-                                              /* Socket is ready to be written. */
+-                                              break;
+-                                      }
+-                                      if (res < 0) {
+-                                              if (errno == EINTR || errno == EAGAIN) {
+-                                                      /* Try again. */
+-                                                      continue;
+-                                              }
+-                                              ast_debug(1, "TLS socket error waiting for write space: %s\n",
+-                                                      strerror(errno));
+-                                              return -1;
+-                                      }
+-                              }
+-                              break;
+-                      default:
+-                              /* Report EOF for an undecoded SSL or transport error. */
+-                              ast_debug(1, "TLS transport or SSL error reading data: %s, %s\n", ERR_error_string(sslerr, err),
+-                                      ssl_error_to_string(sslerr, res));
+-                              return 0;
+-                      }
+-                      if (!ms) {
+-                              /* Report EOF for a timeout */
+-                              ast_debug(1, "TLS timeout reading data\n");
+-                              return 0;
+-                      }
+-              }
+-      }
+-#endif        /* defined(DO_SSL) */
+-
+-      for (;;) {
+-              res = read(stream->fd, buf, size);
+-              if (0 <= res || !stream->exclusive_input) {
+-                      /* Got data or we cannot wait for it. */
+-                      return res;
+-              }
+-              if (errno != EINTR && errno != EAGAIN) {
+-                      /* Not a retryable error. */
+-                      ast_debug(1, "TCP socket error reading data: %s\n",
+-                              strerror(errno));
+-                      return -1;
+-              }
+-              ms = ast_remaining_ms(start, stream->timeout);
+-              if (!ms) {
+-                      /* Report EOF for a timeout */
+-                      ast_debug(1, "TCP timeout reading data\n");
+-                      return 0;
+-              }
+-              ast_wait_for_input(stream->fd, ms);
+-      }
+-}
+-
+-/*!
+- * \internal
+- * \brief fopencookie()/funopen() stream write function.
+- *
+- * \param cookie Stream control data.
+- * \param buf Where to get data to write.
+- * \param size Size of the buffer.
+- *
+- * \retval number of bytes written from buf.
+- * \retval -1 on error.
+- */
+-static HOOK_T tcptls_stream_write(void *cookie, const char *buf, LEN_T size)
+-{
+-      struct ast_tcptls_stream *stream = cookie;
+-      struct timeval start;
+-      int ms;
+-      int res;
+-      int written;
+-      int remaining;
+-
+-      if (!size) {
+-              /* You asked to write no data you wrote no data. */
+-              return 0;
+-      }
+-
+-      if (!stream || stream->fd == -1) {
+-              errno = EBADF;
+-              return -1;
+-      }
+-
+-      if (stream->start.tv_sec) {
+-              start = stream->start;
+-      } else {
+-              start = ast_tvnow();
+-      }
+-
+-#if defined(DO_SSL)
+-      if (stream->ssl) {
+-              written = 0;
+-              remaining = size;
+-              for (;;) {
+-                      int sslerr;
+-                      char err[256];
+-
+-                      res = SSL_write(stream->ssl, buf + written, remaining);
+-                      if (res == remaining) {
+-                              /* Everything was written. */
+-                              return size;
+-                      }
+-                      if (0 < res) {
+-                              /* Successfully wrote part of the buffer.  Try to write the rest. */
+-                              written += res;
+-                              remaining -= res;
+-                              continue;
+-                      }
+-                      sslerr = SSL_get_error(stream->ssl, res);
+-                      switch (sslerr) {
+-                      case SSL_ERROR_ZERO_RETURN:
+-                              ast_debug(1, "TLS clean shutdown alert writing data\n");
+-                              if (written) {
+-                                      /* Report partial write. */
+-                                      return written;
+-                              }
+-                              errno = EBADF;
+-                              return -1;
+-                      case SSL_ERROR_WANT_READ:
+-                              ms = ast_remaining_ms(start, stream->timeout);
+-                              if (!ms) {
+-                                      /* Report partial write. */
+-                                      ast_debug(1, "TLS timeout writing data (want read)\n");
+-                                      return written;
+-                              }
+-                              ast_wait_for_input(stream->fd, ms);
+-                              break;
+-                      case SSL_ERROR_WANT_WRITE:
+-                              ms = ast_remaining_ms(start, stream->timeout);
+-                              if (!ms) {
+-                                      /* Report partial write. */
+-                                      ast_debug(1, "TLS timeout writing data (want write)\n");
+-                                      return written;
+-                              }
+-                              ast_wait_for_output(stream->fd, ms);
+-                              break;
+-                      default:
+-                              /* Undecoded SSL or transport error. */
+-                              ast_debug(1, "TLS transport or SSL error writing data: %s, %s\n", ERR_error_string(sslerr, err),
+-                                      ssl_error_to_string(sslerr, res));
+-                              if (written) {
+-                                      /* Report partial write. */
+-                                      return written;
+-                              }
+-                              errno = EBADF;
+-                              return -1;
+-                      }
+-              }
+-      }
+-#endif        /* defined(DO_SSL) */
+-
+-      written = 0;
+-      remaining = size;
+-      for (;;) {
+-              res = write(stream->fd, buf + written, remaining);
+-              if (res == remaining) {
+-                      /* Yay everything was written. */
+-                      return size;
+-              }
+-              if (0 < res) {
+-                      /* Successfully wrote part of the buffer.  Try to write the rest. */
+-                      written += res;
+-                      remaining -= res;
+-                      continue;
+-              }
+-              if (errno != EINTR && errno != EAGAIN) {
+-                      /* Not a retryable error. */
+-                      ast_debug(1, "TCP socket error writing: %s\n", strerror(errno));
+-                      if (written) {
+-                              return written;
+-                      }
+-                      return -1;
+-              }
+-              ms = ast_remaining_ms(start, stream->timeout);
+-              if (!ms) {
+-                      /* Report partial write. */
+-                      ast_debug(1, "TCP timeout writing data\n");
+-                      return written;
+-              }
+-              ast_wait_for_output(stream->fd, ms);
+-      }
+-}
+-
+-/*!
+- * \internal
+- * \brief fopencookie()/funopen() stream close function.
+- *
+- * \param cookie Stream control data.
+- *
+- * \retval 0 on success.
+- * \retval -1 on error.
+- */
+-static int tcptls_stream_close(void *cookie)
+-{
+-      struct ast_tcptls_stream *stream = cookie;
+-
+-      if (!stream) {
+-              errno = EBADF;
+-              return -1;
+-      }
+-
+-      if (stream->fd != -1) {
+-#if defined(DO_SSL)
+-              if (stream->ssl) {
+-                      int res;
+-
+-                      /*
+-                       * According to the TLS standard, it is acceptable for an
+-                       * application to only send its shutdown alert and then
+-                       * close the underlying connection without waiting for
+-                       * the peer's response (this way resources can be saved,
+-                       * as the process can already terminate or serve another
+-                       * connection).
+-                       */
+-                      res = SSL_shutdown(stream->ssl);
+-                      if (res < 0) {
+-                              int sslerr = SSL_get_error(stream->ssl, res);
+-                              char err[256];
+-
+-                              ast_log(LOG_ERROR, "SSL_shutdown() failed: %s, %s\n",
+-                                      ERR_error_string(sslerr, err), ssl_error_to_string(sslerr, res));
+-                      }
+-
+-#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
+-                      if (!SSL_is_server(stream->ssl)) {
+-#else
+-                      if (!stream->ssl->server) {
+-#endif
+-                              /* For client threads, ensure that the error stack is cleared */
+-#if !defined(OPENSSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+-#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10000000L
+-                              ERR_remove_thread_state(NULL);
+-#else
+-                              ERR_remove_state(0);
+-#endif        /* openssl == 1.0 */
+-#endif  /* openssl < 1.1 */
+-                      }
+-
+-                      SSL_free(stream->ssl);
+-                      stream->ssl = NULL;
+-              }
+-#endif        /* defined(DO_SSL) */
+-
+-              /*
+-               * Issuing shutdown() is necessary here to avoid a race
+-               * condition where the last data written may not appear
+-               * in the TCP stream.  See ASTERISK-23548
+-               */
+-              shutdown(stream->fd, SHUT_RDWR);
+-              if (close(stream->fd)) {
+-                      ast_log(LOG_ERROR, "close() failed: %s\n", strerror(errno));
+-              }
+-              stream->fd = -1;
+-      }
+-      ao2_t_ref(stream, -1, "Closed tcptls stream cookie");
+-
+-      return 0;
+-}
+-
+-/*!
+- * \internal
+- * \brief fopencookie()/funopen() stream destructor function.
+- *
+- * \param cookie Stream control data.
+- *
+- * \return Nothing
+- */
+-static void tcptls_stream_dtor(void *cookie)
+-{
+-#ifdef AST_DEVMODE
+-      /* Since the ast_assert below is the only one using stream,
+-       * and ast_assert is only available with AST_DEVMODE, we
+-       * put this in a conditional to avoid compiler warnings. */
+-      struct ast_tcptls_stream *stream = cookie;
+-#endif
+-
+-      ast_assert(stream->fd == -1);
+-}
+-
+-/*!
+- * \internal
+- * \brief fopencookie()/funopen() stream allocation function.
+- *
+- * \retval stream_cookie on success.
+- * \retval NULL on error.
+- */
+-static struct ast_tcptls_stream *tcptls_stream_alloc(void)
+-{
+-      struct ast_tcptls_stream *stream;
+-
+-      stream = ao2_alloc_options(sizeof(*stream), tcptls_stream_dtor,
+-              AO2_ALLOC_OPT_LOCK_NOLOCK);
+-      if (stream) {
+-              stream->fd = -1;
+-              stream->timeout = -1;
+-      }
+-      return stream;
+-}
+-
+-/*!
+- * \internal
+- * \brief Open a custom FILE stream for tcptls.
+- *
+- * \param stream Stream cookie control data.
+- * \param ssl SSL state if not NULL.
+- * \param fd Socket file descriptor.
+- * \param timeout ms to wait for an event on fd. -1 if timeout disabled.
+- *
+- * \retval fp on success.
+- * \retval NULL on error.
+- */
+-static FILE *tcptls_stream_fopen(struct ast_tcptls_stream *stream, SSL *ssl, int fd, int timeout)
+-{
+-      FILE *fp;
+-
+-#if defined(HAVE_FOPENCOOKIE) /* the glibc/linux interface */
+-      static const cookie_io_functions_t cookie_funcs = {
+-              tcptls_stream_read,
+-              tcptls_stream_write,
+-              NULL,
+-              tcptls_stream_close
+-      };
+-#endif        /* defined(HAVE_FOPENCOOKIE) */
+-
+-      if (fd == -1) {
+-              /* Socket not open. */
+-              return NULL;
+-      }
+-
+-      stream->ssl = ssl;
+-      stream->fd = fd;
+-      stream->timeout = timeout;
+-      ao2_t_ref(stream, +1, "Opening tcptls stream cookie");
+-
+-#if defined(HAVE_FUNOPEN)     /* the BSD interface */
+-      fp = funopen(stream, tcptls_stream_read, tcptls_stream_write, NULL,
+-              tcptls_stream_close);
+-#elif defined(HAVE_FOPENCOOKIE)       /* the glibc/linux interface */
+-      fp = fopencookie(stream, "w+", cookie_funcs);
+-#else
+-      /* could add other methods here */
+-      ast_debug(2, "No stream FILE methods attempted!\n");
+-      fp = NULL;
+-#endif
+-
+-      if (!fp) {
+-              stream->fd = -1;
+-              ao2_t_ref(stream, -1, "Failed to open tcptls stream cookie");
+-      }
+-      return fp;
+-}
+-
+-HOOK_T ast_tcptls_server_read(struct ast_tcptls_session_instance *tcptls_session, void *buf, size_t count)
+-{
+-      if (!tcptls_session->stream_cookie || tcptls_session->stream_cookie->fd == -1) {
+-              ast_log(LOG_ERROR, "TCP/TLS read called on invalid stream.\n");
+-              errno = EIO;
+-              return -1;
+-      }
+-
+-      return tcptls_stream_read(tcptls_session->stream_cookie, buf, count);
+-}
+-
+-HOOK_T ast_tcptls_server_write(struct ast_tcptls_session_instance *tcptls_session, const void *buf, size_t count)
+-{
+-      if (!tcptls_session->stream_cookie || tcptls_session->stream_cookie->fd == -1) {
+-              ast_log(LOG_ERROR, "TCP/TLS write called on invalid stream.\n");
+-              errno = EIO;
+-              return -1;
+-      }
+-
+-      return tcptls_stream_write(tcptls_session->stream_cookie, buf, count);
+-}
+-
+ static void session_instance_destructor(void *obj)
+ {
+       struct ast_tcptls_session_instance *i = obj;
+-      if (i->stream_cookie) {
+-              ao2_t_ref(i->stream_cookie, -1, "Destroying tcptls session instance");
+-              i->stream_cookie = NULL;
++      if (i->stream) {
++              ast_iostream_close(i->stream);
++              i->stream = NULL;
+       }
+       ast_free(i->overflow_buf);
+       ao2_cleanup(i->private_data);
+@@ -650,8 +104,7 @@ static void *handle_tcptls_connection(vo
+ {
+       struct ast_tcptls_session_instance *tcptls_session = data;
+ #ifdef DO_SSL
+-      int (*ssl_setup)(SSL *) = (tcptls_session->client) ? SSL_connect : SSL_accept;
+-      int ret;
++      SSL *ssl;
+ #endif
+       /* TCP/TLS connections are associated with external protocols, and
+@@ -666,127 +119,94 @@ static void *handle_tcptls_connection(vo
+               return NULL;
+       }
+-      tcptls_session->stream_cookie = tcptls_stream_alloc();
+-      if (!tcptls_session->stream_cookie) {
+-              ast_tcptls_close_session_file(tcptls_session);
+-              ao2_ref(tcptls_session, -1);
+-              return NULL;
+-      }
++      if (tcptls_session->parent->tls_cfg) {
++#ifdef DO_SSL
++              if (ast_iostream_start_tls(&tcptls_session->stream, tcptls_session->parent->tls_cfg->ssl_ctx, tcptls_session->client) < 0) {
++                      ast_tcptls_close_session_file(tcptls_session);
++                      ao2_ref(tcptls_session, -1);
++                      return NULL;
++              }
+-      /*
+-      * open a FILE * as appropriate.
+-      */
+-      if (!tcptls_session->parent->tls_cfg) {
+-              tcptls_session->f = tcptls_stream_fopen(tcptls_session->stream_cookie, NULL,
+-                      tcptls_session->fd, -1);
+-              if (tcptls_session->f) {
+-                      if (setvbuf(tcptls_session->f, NULL, _IONBF, 0)) {
++              ssl = ast_iostream_get_ssl(tcptls_session->stream);
++              if ((tcptls_session->client && !ast_test_flag(&tcptls_session->parent->tls_cfg->flags, AST_SSL_DONT_VERIFY_SERVER))
++                      || (!tcptls_session->client && ast_test_flag(&tcptls_session->parent->tls_cfg->flags, AST_SSL_VERIFY_CLIENT))) {
++                      X509 *peer;
++                      long res;
++                      peer = SSL_get_peer_certificate(ssl);
++                      if (!peer) {
++                              ast_log(LOG_ERROR, "No peer SSL certificate to verify\n");
+                               ast_tcptls_close_session_file(tcptls_session);
++                              ao2_ref(tcptls_session, -1);
++                              return NULL;
+                       }
+-              }
+-      }
+-#ifdef DO_SSL
+-      else if ( (tcptls_session->ssl = SSL_new(tcptls_session->parent->tls_cfg->ssl_ctx)) ) {
+-              SSL_set_fd(tcptls_session->ssl, tcptls_session->fd);
+-              if ((ret = ssl_setup(tcptls_session->ssl)) <= 0) {
+-                      char err[256];
+-                      int sslerr = SSL_get_error(tcptls_session->ssl, ret);
+-
+-                      ast_log(LOG_ERROR, "Problem setting up ssl connection: %s, %s\n", ERR_error_string(sslerr, err),
+-                              ssl_error_to_string(sslerr, ret));
+-              } else if ((tcptls_session->f = tcptls_stream_fopen(tcptls_session->stream_cookie,
+-                      tcptls_session->ssl, tcptls_session->fd, -1))) {
+-                      if ((tcptls_session->client && !ast_test_flag(&tcptls_session->parent->tls_cfg->flags, AST_SSL_DONT_VERIFY_SERVER))
+-                              || (!tcptls_session->client && ast_test_flag(&tcptls_session->parent->tls_cfg->flags, AST_SSL_VERIFY_CLIENT))) {
+-                              X509 *peer;
+-                              long res;
+-                              peer = SSL_get_peer_certificate(tcptls_session->ssl);
+-                              if (!peer) {
+-                                      ast_log(LOG_ERROR, "No peer SSL certificate to verify\n");
+-                                      ast_tcptls_close_session_file(tcptls_session);
+-                                      ao2_ref(tcptls_session, -1);
+-                                      return NULL;
+-                              }
+-                              res = SSL_get_verify_result(tcptls_session->ssl);
+-                              if (res != X509_V_OK) {
+-                                      ast_log(LOG_ERROR, "Certificate did not verify: %s\n", X509_verify_cert_error_string(res));
+-                                      X509_free(peer);
+-                                      ast_tcptls_close_session_file(tcptls_session);
+-                                      ao2_ref(tcptls_session, -1);
+-                                      return NULL;
++                      res = SSL_get_verify_result(ssl);
++                      if (res != X509_V_OK) {
++                              ast_log(LOG_ERROR, "Certificate did not verify: %s\n", X509_verify_cert_error_string(res));
++                              X509_free(peer);
++                              ast_tcptls_close_session_file(tcptls_session);
++                              ao2_ref(tcptls_session, -1);
++                              return NULL;
++                      }
++                      if (!ast_test_flag(&tcptls_session->parent->tls_cfg->flags, AST_SSL_IGNORE_COMMON_NAME)) {
++                              ASN1_STRING *str;
++                              X509_NAME *name = X509_get_subject_name(peer);
++                              STACK_OF(GENERAL_NAME) *alt_names;
++                              int pos = -1;
++                              int found = 0;
++
++                              for (;;) {
++                                      /* Walk the certificate to check all available "Common Name" */
++                                      /* XXX Probably should do a gethostbyname on the hostname and compare that as well */
++                                      pos = X509_NAME_get_index_by_NID(name, NID_commonName, pos);
++                                      if (pos < 0) {
++                                              break;
++                                      }
++                                      str = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, pos));
++                                      if (!check_tcptls_cert_name(str, tcptls_session->parent->hostname, "common name")) {
++                                              found = 1;
++                                              break;
++                                      }
+                               }
+-                              if (!ast_test_flag(&tcptls_session->parent->tls_cfg->flags, AST_SSL_IGNORE_COMMON_NAME)) {
+-                                      ASN1_STRING *str;
+-                                      X509_NAME *name = X509_get_subject_name(peer);
+-                                      STACK_OF(GENERAL_NAME) *alt_names;
+-                                      int pos = -1;
+-                                      int found = 0;
+-
+-                                      for (;;) {
+-                                              /* Walk the certificate to check all available "Common Name" */
+-                                              /* XXX Probably should do a gethostbyname on the hostname and compare that as well */
+-                                              pos = X509_NAME_get_index_by_NID(name, NID_commonName, pos);
+-                                              if (pos < 0) {
+-                                                      break;
+-                                              }
+-                                              str = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, pos));
+-                                              if (!check_tcptls_cert_name(str, tcptls_session->parent->hostname, "common name")) {
+-                                                      found = 1;
+-                                                      break;
+-                                              }
+-                                      }
++                              if (!found) {
++                                      alt_names = X509_get_ext_d2i(peer, NID_subject_alt_name, NULL, NULL);
++                                      if (alt_names != NULL) {
++                                              int alt_names_count = sk_GENERAL_NAME_num(alt_names);
++
++                                              for (pos = 0; pos < alt_names_count; pos++) {
++                                                      const GENERAL_NAME *alt_name = sk_GENERAL_NAME_value(alt_names, pos);
+-                                      if (!found) {
+-                                              alt_names = X509_get_ext_d2i(peer, NID_subject_alt_name, NULL, NULL);
+-                                              if (alt_names != NULL) {
+-                                                      int alt_names_count = sk_GENERAL_NAME_num(alt_names);
+-
+-                                                      for (pos = 0; pos < alt_names_count; pos++) {
+-                                                              const GENERAL_NAME *alt_name = sk_GENERAL_NAME_value(alt_names, pos);
+-
+-                                                              if (alt_name->type != GEN_DNS) {
+-                                                                      continue;
+-                                                              }
+-
+-                                                              if (!check_tcptls_cert_name(alt_name->d.dNSName, tcptls_session->parent->hostname, "alt name")) {
+-                                                                      found = 1;
+-                                                                      break;
+-                                                              }
++                                                      if (alt_name->type != GEN_DNS) {
++                                                              continue;
+                                                       }
+-                                                      sk_GENERAL_NAME_pop_free(alt_names, GENERAL_NAME_free);
++                                                      if (!check_tcptls_cert_name(alt_name->d.dNSName, tcptls_session->parent->hostname, "alt name")) {
++                                                              found = 1;
++                                                              break;
++                                                      }
+                                               }
+-                                      }
+-                                      if (!found) {
+-                                              ast_log(LOG_ERROR, "Certificate common name did not match (%s)\n", tcptls_session->parent->hostname);
+-                                              X509_free(peer);
+-                                              ast_tcptls_close_session_file(tcptls_session);
+-                                              ao2_ref(tcptls_session, -1);
+-                                              return NULL;
++                                              sk_GENERAL_NAME_pop_free(alt_names, GENERAL_NAME_free);
+                                       }
+                               }
+-                              X509_free(peer);
++
++                              if (!found) {
++                                      ast_log(LOG_ERROR, "Certificate common name did not match (%s)\n", tcptls_session->parent->hostname);
++                                      X509_free(peer);
++                                      ast_tcptls_close_session_file(tcptls_session);
++                                      ao2_ref(tcptls_session, -1);
++                                      return NULL;
++                              }
+                       }
++                      X509_free(peer);
+               }
+-              if (!tcptls_session->f) {       /* no success opening descriptor stacking */
+-                      SSL_free(tcptls_session->ssl);
+-              }
+-      }
+-#endif /* DO_SSL */
+-
+-      if (!tcptls_session->f) {
++#else
++              ast_log(LOG_ERROR, "Attempted a TLS connection without OpenSSL support. This will not work!\n");
+               ast_tcptls_close_session_file(tcptls_session);
+-              ast_log(LOG_WARNING, "FILE * open failed!\n");
+-#ifndef DO_SSL
+-              if (tcptls_session->parent->tls_cfg) {
+-                      ast_log(LOG_ERROR, "Attempted a TLS connection without OpenSSL support. This will not work!\n");
+-              }
+-#endif
+               ao2_ref(tcptls_session, -1);
+               return NULL;
++#endif /* DO_SSL */
+       }
+       if (tcptls_session->parent->worker_fn) {
+@@ -845,7 +265,13 @@ void *ast_tcptls_server_root(void *data)
+               }
+               flags = fcntl(fd, F_GETFL);
+               fcntl(fd, F_SETFL, flags & ~O_NONBLOCK);
+-              tcptls_session->fd = fd;
++
++              tcptls_session->stream = ast_iostream_from_fd(&fd);
++              if (!tcptls_session->stream) {
++                      ast_log(LOG_WARNING, "No memory for new session iostream\n");
++                      continue;
++              }
++
+               tcptls_session->parent = desc;
+               ast_sockaddr_copy(&tcptls_session->remote_address, &addr);
+@@ -1094,7 +520,7 @@ client_start_error:
+ struct ast_tcptls_session_instance *ast_tcptls_client_create(struct ast_tcptls_session_args *desc)
+ {
+-      int x = 1;
++      int fd, x = 1;
+       struct ast_tcptls_session_instance *tcptls_session = NULL;
+       /* Do nothing if nothing has changed */
+@@ -1110,8 +536,8 @@ struct ast_tcptls_session_instance *ast_
+               close(desc->accept_fd);
+       }
+-      desc->accept_fd = socket(ast_sockaddr_is_ipv6(&desc->remote_address) ?
+-                               AF_INET6 : AF_INET, SOCK_STREAM, IPPROTO_TCP);
++      fd = desc->accept_fd = socket(ast_sockaddr_is_ipv6(&desc->remote_address) ?
++                                    AF_INET6 : AF_INET, SOCK_STREAM, IPPROTO_TCP);
+       if (desc->accept_fd < 0) {
+               ast_log(LOG_ERROR, "Unable to allocate socket for %s: %s\n",
+                       desc->name, strerror(errno));
+@@ -1141,7 +567,11 @@ struct ast_tcptls_session_instance *ast_
+               goto error;
+       }
+       tcptls_session->client = 1;
+-      tcptls_session->fd = desc->accept_fd;
++      tcptls_session->stream = ast_iostream_from_fd(&fd);
++      if (!tcptls_session->stream) {
++              goto error;
++      }
++
+       tcptls_session->parent = desc;
+       tcptls_session->parent->worker_fn = NULL;
+       ast_sockaddr_copy(&tcptls_session->remote_address,
+@@ -1301,24 +731,9 @@ error:
+ void ast_tcptls_close_session_file(struct ast_tcptls_session_instance *tcptls_session)
+ {
+-      if (tcptls_session->f) {
+-              fflush(tcptls_session->f);
+-              if (fclose(tcptls_session->f)) {
+-                      ast_log(LOG_ERROR, "fclose() failed: %s\n", strerror(errno));
+-              }
+-              tcptls_session->f = NULL;
+-              tcptls_session->fd = -1;
+-      } else if (tcptls_session->fd != -1) {
+-              /*
+-               * Issuing shutdown() is necessary here to avoid a race
+-               * condition where the last data written may not appear
+-               * in the TCP stream.  See ASTERISK-23548
+-               */
+-              shutdown(tcptls_session->fd, SHUT_RDWR);
+-              if (close(tcptls_session->fd)) {
+-                      ast_log(LOG_ERROR, "close() failed: %s\n", strerror(errno));
+-              }
+-              tcptls_session->fd = -1;
++      if (tcptls_session->stream) {
++              ast_iostream_close(tcptls_session->stream);
++              tcptls_session->stream = NULL;
+       } else {
+               ast_log(LOG_ERROR, "ast_tcptls_close_session_file invoked on session instance without file or file descriptor\n");
+       }
+--- a/main/utils.c
++++ b/main/utils.c
+@@ -1437,74 +1437,6 @@ int ast_carefulwrite(int fd, char *s, in
+       return res;
+ }
+-int ast_careful_fwrite(FILE *f, int fd, const char *src, size_t len, int timeoutms)
+-{
+-      struct timeval start = ast_tvnow();
+-      int n = 0;
+-      int elapsed = 0;
+-
+-      while (len) {
+-              if (wait_for_output(fd, timeoutms - elapsed)) {
+-                      /* poll returned a fatal error, so bail out immediately. */
+-                      return -1;
+-              }
+-
+-              /* Clear any errors from a previous write */
+-              clearerr(f);
+-
+-              n = fwrite(src, 1, len, f);
+-
+-              if (ferror(f) && errno != EINTR && errno != EAGAIN) {
+-                      /* fatal error from fwrite() */
+-                      if (errno == EPIPE) {
+-                              ast_debug(1, "fwrite() failed due to reading end being closed: EPIPE\n");
+-                      } else if (!feof(f)) {
+-                              /* Don't spam the logs if it was just that the connection is closed. */
+-                              ast_log(LOG_ERROR, "fwrite() returned error: %s\n", strerror(errno));
+-                      }
+-                      n = -1;
+-                      break;
+-              }
+-
+-              /* Update for data already written to the socket */
+-              len -= n;
+-              src += n;
+-
+-              elapsed = ast_tvdiff_ms(ast_tvnow(), start);
+-              if (elapsed >= timeoutms) {
+-                      /* We've taken too long to write
+-                       * This is only an error condition if we haven't finished writing. */
+-                      n = len ? -1 : 0;
+-                      break;
+-              }
+-      }
+-
+-      errno = 0;
+-      while (fflush(f)) {
+-              if (errno == EAGAIN || errno == EINTR) {
+-                      /* fflush() does not appear to reset errno if it flushes
+-                       * and reaches EOF at the same time. It returns EOF with
+-                       * the last seen value of errno, causing a possible loop.
+-                       * Also usleep() to reduce CPU eating if it does loop */
+-                      errno = 0;
+-                      usleep(1);
+-                      continue;
+-              }
+-              if (errno && !feof(f)) {
+-                      if (errno == EPIPE) {
+-                              ast_debug(1, "fflush() failed due to reading end being closed: EPIPE\n");
+-                      } else {
+-                              /* Don't spam the logs if it was just that the connection is closed. */
+-                              ast_log(LOG_ERROR, "fflush() returned error: %s\n", strerror(errno));
+-                      }
+-              }
+-              n = -1;
+-              break;
+-      }
+-
+-      return n < 0 ? -1 : 0;
+-}
+-
+ char *ast_strip_quoted(char *s, const char *beg_quotes, const char *end_quotes)
+ {
+       char *e;
+--- a/res/res_http_post.c
++++ b/res/res_http_post.c
+@@ -213,7 +213,7 @@ static int find_sequence(char * inbuf, i
+ * This function has two modes.  The first to find a boundary marker.  The
+ * second is to find the filename immediately after the boundary.
+ */
+-static int readmimefile(FILE *fin, FILE *fout, char *boundary, int contentlen)
++static int readmimefile(struct ast_iostream *in, FILE *fout, char *boundary, int contentlen)
+ {
+       int find_filename = 0;
+       char buf[4096];
+@@ -224,7 +224,7 @@ static int readmimefile(FILE *fin, FILE
+       int boundary_len;
+       char * path_end, * path_start, * filespec;
+-      if (NULL == fin || NULL == fout || NULL == boundary || 0 >= contentlen) {
++      if (NULL == in || NULL == fout || NULL == boundary || 0 >= contentlen) {
+               return -1;
+       }
+@@ -238,8 +238,8 @@ static int readmimefile(FILE *fin, FILE
+               }
+               if (0 < num_to_read) {
+-                      if (fread(&(buf[char_in_buf]), 1, num_to_read, fin) < num_to_read) {
+-                              ast_log(LOG_WARNING, "fread() failed: %s\n", strerror(errno));
++                      if (ast_iostream_read(in, &(buf[char_in_buf]), num_to_read) < num_to_read) {
++                              ast_log(LOG_WARNING, "read failed: %s\n", strerror(errno));
+                               num_to_read = 0;
+                       }
+                       contentlen -= num_to_read;
+@@ -380,7 +380,7 @@ static int http_post_callback(struct ast
+        */
+       ast_http_body_read_status(ser, 0);
+-      if (0 > readmimefile(ser->f, f, boundary_marker, content_len)) {
++      if (0 > readmimefile(ser->stream, f, boundary_marker, content_len)) {
+               ast_debug(1, "Cannot find boundary marker in POST request.\n");
+               fclose(f);
+               ast_http_error(ser, 400, "Bad Request", "Cannot find boundary marker in POST request.");
+--- a/res/res_http_websocket.c
++++ b/res/res_http_websocket.c
+@@ -87,8 +87,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revisi
+ /*! \brief Structure definition for session */
+ struct ast_websocket {
+-      FILE *f;                          /*!< Pointer to the file instance used for writing and reading */
+-      int fd;                           /*!< File descriptor for the session, only used for polling */
++      struct ast_iostream *stream;      /*!< iostream of the connection */
+       struct ast_sockaddr address;      /*!< Address of the remote client */
+       enum ast_websocket_opcode opcode; /*!< Cached opcode for multi-frame messages */
+       size_t payload_len;               /*!< Length of the payload */
+@@ -178,10 +177,11 @@ static void session_destroy_fn(void *obj
+ {
+       struct ast_websocket *session = obj;
+-      if (session->f) {
++      if (session->stream) {
+               ast_websocket_close(session, 0);
+-              if (session->f) {
+-                      fclose(session->f);
++              if (session->stream) {
++                      ast_iostream_close(session->stream);
++                      session->stream = NULL;
+                       ast_verb(2, "WebSocket connection %s '%s' closed\n", session->client ? "to" : "from",
+                               ast_sockaddr_stringify(&session->address));
+               }
+@@ -307,20 +307,22 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+       session->close_sent = 1;
+       ao2_lock(session);
+-      res = ast_careful_fwrite(session->f, session->fd, frame, 4, session->timeout);
++      ast_iostream_set_timeout_inactivity(session->stream, session->timeout);
++      res = ast_iostream_write(session->stream, frame, sizeof(frame));
++      ast_iostream_set_timeout_disable(session->stream);
+       /* If an error occurred when trying to close this connection explicitly terminate it now.
+        * Doing so will cause the thread polling on it to wake up and terminate.
+        */
+-      if (res) {
+-              fclose(session->f);
+-              session->f = NULL;
++      if (res != sizeof(frame)) {
++              ast_iostream_close(session->stream);
++              session->stream = NULL;
+               ast_verb(2, "WebSocket connection %s '%s' forcefully closed due to fatal write error\n",
+                       session->client ? "to" : "from", ast_sockaddr_stringify(&session->address));
+       }
+       ao2_unlock(session);
+-      return res;
++      return res == sizeof(frame);
+ }
+ static const char *opcode_map[] = {
+@@ -388,7 +390,8 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+               return -1;
+       }
+-      if (ast_careful_fwrite(session->f, session->fd, frame, frame_size, session->timeout)) {
++      ast_iostream_set_timeout_sequence(session->stream, ast_tvnow(), session->timeout);
++      if (ast_iostream_write(session->stream, frame, frame_size) != frame_size) {
+               ao2_unlock(session);
+               /* 1011 - server terminating connection due to not being able to fulfill the request */
+               ast_debug(1, "Closing WS with 1011 because we can't fulfill a write request\n");
+@@ -396,7 +399,7 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+               return -1;
+       }
+-      fflush(session->f);
++      ast_iostream_set_timeout_disable(session->stream);
+       ao2_unlock(session);
+       return 0;
+@@ -424,7 +427,7 @@ void AST_OPTIONAL_API_NAME(ast_websocket
+ int AST_OPTIONAL_API_NAME(ast_websocket_fd)(struct ast_websocket *session)
+ {
+-      return session->closing ? -1 : session->fd;
++      return session->closing ? -1 : ast_iostream_get_fd(session->stream);
+ }
+ struct ast_sockaddr * AST_OPTIONAL_API_NAME(ast_websocket_remote_address)(struct ast_websocket *session)
+@@ -439,18 +442,8 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+ int AST_OPTIONAL_API_NAME(ast_websocket_set_nonblock)(struct ast_websocket *session)
+ {
+-      int flags;
+-
+-      if ((flags = fcntl(session->fd, F_GETFL)) == -1) {
+-              return -1;
+-      }
+-
+-      flags |= O_NONBLOCK;
+-
+-      if ((flags = fcntl(session->fd, F_SETFL, flags)) == -1) {
+-              return -1;
+-      }
+-
++      ast_iostream_nonblock(session->stream);
++      ast_iostream_set_exclusive_input(session->stream, 0);
+       return 0;
+ }
+@@ -491,23 +484,22 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+  */
+ static inline int ws_safe_read(struct ast_websocket *session, char *buf, int len, enum ast_websocket_opcode *opcode)
+ {
+-      size_t rlen;
++      ssize_t rlen;
+       int xlen = len;
+       char *rbuf = buf;
+       int sanity = 10;
+       ao2_lock(session);
+-      if (!session->f) {
++      if (!session->stream) {
+               ao2_unlock(session);
+               errno = ECONNABORTED;
+               return -1;
+       }
+       for (;;) {
+-              clearerr(session->f);
+-              rlen = fread(rbuf, 1, xlen, session->f);
+-              if (!rlen) {
+-                      if (feof(session->f)) {
++              rlen = ast_iostream_read(session->stream, rbuf, xlen);
++              if (rlen != xlen) {
++                      if (rlen == 0) {
+                               ast_log(LOG_WARNING, "Web socket closed abruptly\n");
+                               *opcode = AST_WEBSOCKET_OPCODE_CLOSE;
+                               session->closing = 1;
+@@ -515,7 +507,7 @@ static inline int ws_safe_read(struct as
+                               return -1;
+                       }
+-                      if (ferror(session->f) && errno != EAGAIN) {
++                      if (rlen < 0 && errno != EAGAIN) {
+                               ast_log(LOG_ERROR, "Error reading from web socket: %s\n", strerror(errno));
+                               *opcode = AST_WEBSOCKET_OPCODE_CLOSE;
+                               session->closing = 1;
+@@ -536,7 +528,7 @@ static inline int ws_safe_read(struct as
+               if (!xlen) {
+                       break;
+               }
+-              if (ast_wait_for_input(session->fd, 1000) < 0) {
++              if (ast_wait_for_input(ast_iostream_get_fd(session->stream), 1000) < 0) {
+                       ast_log(LOG_ERROR, "ast_wait_for_input returned err: %s\n", strerror(errno));
+                       *opcode = AST_WEBSOCKET_OPCODE_CLOSE;
+                       session->closing = 1;
+@@ -831,7 +823,7 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+                       ao2_ref(protocol_handler, -1);
+                       return 0;
+               }
+-              session->timeout =  AST_DEFAULT_WEBSOCKET_WRITE_TIMEOUT;
++              session->timeout = AST_DEFAULT_WEBSOCKET_WRITE_TIMEOUT;
+               if (protocol_handler->session_attempted
+                   && protocol_handler->session_attempted(ser, get_vars, headers)) {
+@@ -852,7 +844,8 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+                *    Connection_.
+                */
+               if (protocol) {
+-                      fprintf(ser->f, "HTTP/1.1 101 Switching Protocols\r\n"
++                      ast_iostream_printf(ser->stream,
++                              "HTTP/1.1 101 Switching Protocols\r\n"
+                               "Upgrade: %s\r\n"
+                               "Connection: Upgrade\r\n"
+                               "Sec-WebSocket-Accept: %s\r\n"
+@@ -861,15 +854,14 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+                               websocket_combine_key(key, base64, sizeof(base64)),
+                               protocol);
+               } else {
+-                      fprintf(ser->f, "HTTP/1.1 101 Switching Protocols\r\n"
++                      ast_iostream_printf(ser->stream,
++                              "HTTP/1.1 101 Switching Protocols\r\n"
+                               "Upgrade: %s\r\n"
+                               "Connection: Upgrade\r\n"
+                               "Sec-WebSocket-Accept: %s\r\n\r\n",
+                               upgrade,
+                               websocket_combine_key(key, base64, sizeof(base64)));
+               }
+-
+-              fflush(ser->f);
+       } else {
+               /* Specification defined in http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol-75 or completely unknown */
+@@ -881,7 +873,7 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+       }
+       /* Enable keepalive on all sessions so the underlying user does not have to */
+-      if (setsockopt(ser->fd, SOL_SOCKET, SO_KEEPALIVE, &flags, sizeof(flags))) {
++      if (setsockopt(ast_iostream_get_fd(ser->stream), SOL_SOCKET, SO_KEEPALIVE, &flags, sizeof(flags))) {
+               ast_log(LOG_WARNING, "WebSocket connection from '%s' could not be accepted - failed to enable keepalive\n",
+                       ast_sockaddr_stringify(&ser->remote_address));
+               websocket_bad_request(ser);
+@@ -893,25 +885,23 @@ int AST_OPTIONAL_API_NAME(ast_websocket_
+       ast_verb(2, "WebSocket connection from '%s' for protocol '%s' accepted using version '%d'\n", ast_sockaddr_stringify(&ser->remote_address), protocol ? : "", version);
+       /* Populate the session with all the needed details */
+-      session->f = ser->f;
+-      session->fd = ser->fd;
++      session->stream = ser->stream;
+       ast_sockaddr_copy(&session->address, &ser->remote_address);
+       session->opcode = -1;
+       session->reconstruct = DEFAULT_RECONSTRUCTION_CEILING;
+-      session->secure = ser->ssl ? 1 : 0;
++      session->secure = ast_iostream_get_ssl(ser->stream) ? 1 : 0;
+       /* Give up ownership of the socket and pass it to the protocol handler */
+-      ast_tcptls_stream_set_exclusive_input(ser->stream_cookie, 0);
++      ast_iostream_set_exclusive_input(session->stream, 0);
+       protocol_handler->session_established(session, get_vars, headers);
+       ao2_ref(protocol_handler, -1);
+       /*
+-       * By dropping the FILE* and fd from the session the connection
++       * By dropping the stream from the session the connection
+        * won't get closed when the HTTP server cleans up because we
+        * passed the connection to the protocol handler.
+        */
+-      ser->f = NULL;
+-      ser->fd = -1;
++      ser->stream = NULL;
+       return 0;
+ }
+@@ -1245,7 +1235,7 @@ static enum ast_websocket_result websock
+       int has_accept = 0;
+       int has_protocol = 0;
+-      if (!fgets(buf, sizeof(buf), client->ser->f)) {
++      if (ast_iostream_gets(client->ser->stream, buf, sizeof(buf)) <= 0) {
+               ast_log(LOG_ERROR, "Unable to retrieve HTTP status line.");
+               return WS_BAD_STATUS;
+       }
+@@ -1258,7 +1248,7 @@ static enum ast_websocket_result websock
+       /* Ignoring line folding - assuming header field values are contained
+          within a single line */
+-      while (fgets(buf, sizeof(buf), client->ser->f)) {
++      while (ast_iostream_gets(client->ser->stream, buf, sizeof(buf)) > 0) {
+               char *name, *value;
+               int parsed = ast_http_header_parse(buf, &name, &value);
+@@ -1311,19 +1301,19 @@ static enum ast_websocket_result websock
+                       client->protocols);
+       }
+-      if (fprintf(client->ser->f,
+-                  "GET /%s HTTP/1.1\r\n"
+-                  "Sec-WebSocket-Version: %d\r\n"
+-                  "Upgrade: websocket\r\n"
+-                  "Connection: Upgrade\r\n"
+-                  "Host: %s\r\n"
+-                  "Sec-WebSocket-Key: %s\r\n"
+-                  "%s\r\n",
+-                  client->resource_name ? ast_str_buffer(client->resource_name) : "",
+-                  client->version,
+-                  client->host,
+-                  client->key,
+-                  protocols) < 0) {
++      if (ast_iostream_printf(client->ser->stream,
++                      "GET /%s HTTP/1.1\r\n"
++                      "Sec-WebSocket-Version: %d\r\n"
++                      "Upgrade: websocket\r\n"
++                      "Connection: Upgrade\r\n"
++                      "Host: %s\r\n"
++                      "Sec-WebSocket-Key: %s\r\n"
++                      "%s\r\n",
++                      client->resource_name ? ast_str_buffer(client->resource_name) : "",
++                      client->version,
++                      client->host,
++                      client->key,
++                      protocols) < 0) {
+               ast_log(LOG_ERROR, "Failed to send handshake.\n");
+               return WS_WRITE_ERROR;
+       }
+@@ -1347,9 +1337,9 @@ static enum ast_websocket_result websock
+               return res;
+       }
+-      ws->f = ws->client->ser->f;
+-      ws->fd = ws->client->ser->fd;
+-      ws->secure = ws->client->ser->ssl ? 1 : 0;
++      ws->stream = ws->client->ser->stream;
++      ws->secure = ast_iostream_get_ssl(ws->stream) ? 1 : 0;
++      ws->client->ser->stream = NULL;
+       ast_sockaddr_copy(&ws->address, &ws->client->ser->remote_address);
+       return WS_OK;
+ }
+--- a/res/res_phoneprov.c
++++ b/res/res_phoneprov.c
+@@ -950,7 +950,7 @@ static int phoneprov_callback(struct ast
+                       socklen_t namelen = sizeof(name.sa);
+                       int res;
+-                      if ((res = getsockname(ser->fd, &name.sa, &namelen))) {
++                      if ((res = getsockname(ast_iostream_get_fd(ser->stream), &name.sa, &namelen))) {
+                               ast_log(LOG_WARNING, "Could not get server IP, breakage likely.\n");
+                       } else {
+                               struct extension *exten_iter;