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<div id="msg">
<div id="header">FreeSWITCH Subversion</div>
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://fisheye.freeswitch.org/changelog/FreeSWITCH?cs=17526">17526</a></dd>
<dt>Author</dt> <dd>moy</dd>
<dt>Date</dt> <dd>2010-05-11 15:31:24 -0500 (Tue, 11 May 2010)</dd>
</dl>
<h3>Log Message</h3>
<pre>freetdm: added boost sample app</pre>
<h3>Added Paths</h3>
<ul>
<li>freeswitch/trunk/libs/freetdm/sample/</li>
<li>freeswitch/trunk/libs/freetdm/sample/boost/</li>
<li><a href="#freeswitchtrunklibsfreetdmsampleboostMakefile">freeswitch/trunk/libs/freetdm/sample/boost/Makefile</a></li>
<li><a href="#freeswitchtrunklibsfreetdmsampleboostftdmstartc">freeswitch/trunk/libs/freetdm/sample/boost/ftdmstart.c</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="freeswitchtrunklibsfreetdmsampleboostMakefile"></a>
<div class="addfile"><h4>Added: freeswitch/trunk/libs/freetdm/sample/boost/Makefile (0 => 17526)</h4>
<pre class="diff"><span>
<span class="info">--- freeswitch/trunk/libs/freetdm/sample/boost/Makefile (rev 0)
+++ freeswitch/trunk/libs/freetdm/sample/boost/Makefile 2010-05-11 20:31:24 UTC (rev 17526)
</span><span class="lines">@@ -0,0 +1,10 @@
</span><ins>+CC=gcc
+CFLAGS=-Wall -I/usr/local/freeswitch/include
+LDFLAGS=-L/usr/local/freeswitch/lib -lfreetdm
+
+ftdmstart: ftdmstart.o
+
+clean:
+ rm -rf ftdmstart.o
+
+
</ins></span></pre></div>
<a id="freeswitchtrunklibsfreetdmsampleboostftdmstartc"></a>
<div class="addfile"><h4>Added: freeswitch/trunk/libs/freetdm/sample/boost/ftdmstart.c (0 => 17526)</h4>
<pre class="diff"><span>
<span class="info">--- freeswitch/trunk/libs/freetdm/sample/boost/ftdmstart.c (rev 0)
+++ freeswitch/trunk/libs/freetdm/sample/boost/ftdmstart.c 2010-05-11 20:31:24 UTC (rev 17526)
</span><span class="lines">@@ -0,0 +1,476 @@
</span><ins>+/*
+ * Copyright (c) 2010, Sangoma Technologies
+ * Moises Silva <moy@sangoma.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * Sample program for the boost signaling absraction.
+ * Usage: testboostalone <spanno-1> <spanno-2> ... -d [number-to-dial-if-any]
+ * compile this program linking to the freetdm library (ie -lfreetdm)
+ **/
+
+#ifndef __linux__
+#define _CRT_SECURE_NO_WARNINGS 1
+#endif
+
+#include <signal.h>
+
+#include "freetdm.h"
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+
+/* arbitrary limit for max calls in this sample program */
+#define MAX_CALLS 255
+
+/* some timers (in seconds) to fake responses in incoming calls */
+#define PROGRESS_TIMER 1
+#define ANSWER_TIMER 5
+#define HANGUP_TIMER 15
+
+/* simple variable used to stop the application */
+static int app_running = 0;
+
+typedef void (*expired_function_t)(ftdm_channel_t *channel);
+typedef struct dummy_timer_s {
+ int time;
+ ftdm_channel_t *channel;
+ expired_function_t expired;
+} dummy_timer_t;
+
+/* dummy second resolution timers */
+static dummy_timer_t g_timers[MAX_CALLS];
+
+/* mutex to protect the timers (both, the test thread and the signaling thread may modify them) */
+static ftdm_mutex_t *g_schedule_mutex;
+
+/* unique outgoing channel */
+static ftdm_channel_t *g_outgoing_channel = NULL;
+
+static void interrupt_requested(int signal)
+{
+ app_running = 0;
+}
+
+static void schedule_timer(ftdm_channel_t *channel, int sec, expired_function_t expired)
+{
+ int i;
+ ftdm_mutex_lock(g_schedule_mutex);
+ for (i = 0; i < sizeof(g_timers)/sizeof(g_timers[0]); i++) {
+ /* check the timer slot is free to use */
+ if (!g_timers[i].time) {
+ g_timers[i].time = sec;
+ g_timers[i].channel = channel;
+ g_timers[i].expired = expired;
+ ftdm_mutex_unlock(g_schedule_mutex);
+ return;
+ }
+ }
+ ftdm_log(FTDM_LOG_ERROR, "Failed to schedule timer\n");
+ ftdm_mutex_unlock(g_schedule_mutex);
+}
+
+static void run_timers(void)
+{
+ int i;
+ void *channel;
+ expired_function_t expired_func = NULL;
+ ftdm_mutex_lock(g_schedule_mutex);
+ for (i = 0; i < sizeof(g_timers)/sizeof(g_timers[0]); i++) {
+ /* if there's time left, decrement */
+ if (g_timers[i].time) {
+ g_timers[i].time--;
+ }
+
+ /* if time expired and we have an expired function, call it */
+ if (!g_timers[i].time && g_timers[i].expired) {
+ expired_func = g_timers[i].expired;
+ channel = g_timers[i].channel;
+ memset(&g_timers[i], 0, sizeof(g_timers[i]));
+ expired_func(channel);
+ }
+ }
+ ftdm_mutex_unlock(g_schedule_mutex);
+}
+
+static void release_timers(ftdm_channel_t *channel)
+{
+ int i;
+ ftdm_mutex_lock(g_schedule_mutex);
+ for (i = 0; i < sizeof(g_timers)/sizeof(g_timers[0]); i++) {
+ /* clear any timer belonging to the given channel */
+ if (g_timers[i].channel == channel) {
+ memset(&g_timers[i], 0, sizeof(g_timers[i]));
+ }
+ }
+ ftdm_mutex_unlock(g_schedule_mutex);
+}
+
+/* hangup the call */
+static void send_hangup(ftdm_channel_t *channel)
+{
+ int spanid = ftdm_channel_get_span_id(channel);
+ int chanid = ftdm_channel_get_id(channel);
+ ftdm_log(FTDM_LOG_NOTICE, "-- Requesting hangup in channel %d:%d\n", spanid, chanid);
+ ftdm_channel_call_hangup(channel);
+}
+
+/* send answer for an incoming call */
+static void send_answer(ftdm_channel_t *channel)
+{
+ /* we move the channel signaling state machine to UP (answered) */
+ int spanid = ftdm_channel_get_span_id(channel);
+ int chanid = ftdm_channel_get_id(channel);
+ ftdm_log(FTDM_LOG_NOTICE, "-- Requesting answer in channel %d:%d\n", spanid, chanid);
+ ftdm_channel_call_answer(channel);
+ schedule_timer(channel, HANGUP_TIMER, send_hangup);
+}
+
+/* send progress for an incoming */
+static void send_progress(ftdm_channel_t *channel)
+{
+ /* we move the channel signaling state machine to UP (answered) */
+ int spanid = ftdm_channel_get_span_id(channel);
+ int chanid = ftdm_channel_get_id(channel);
+ ftdm_log(FTDM_LOG_NOTICE, "-- Requesting progress\n", spanid, chanid);
+ ftdm_channel_call_indicate(channel, FTDM_CHANNEL_INDICATE_PROGRESS);
+ schedule_timer(channel, ANSWER_TIMER, send_answer);
+}
+
+/* This function will be called in an undetermined signaling thread, you must not do
+ * any blocking operations here or the signaling stack may delay other call event processing
+ * The arguments for this function are defined in FIO_SIGNAL_CB_FUNCTION prototype, I just
+ * name them here for your convenience:
+ * ftdm_sigmsg_t *sigmsg
+ * - The sigmsg structure contains the ftdm_channel structure that represents the channel where
+ * the event occurred and the event_id of the signaling event that just occurred.
+ * */
+static FIO_SIGNAL_CB_FUNCTION(on_signaling_event)
+{
+ switch (sigmsg->event_id) {
+ /* This event signals the start of an incoming call */
+ case FTDM_SIGEVENT_START:
+ ftdm_log(FTDM_LOG_NOTICE, "Incoming call received in channel %d:%d\n", sigmsg->span_id, sigmsg->chan_id);
+ schedule_timer(sigmsg->channel, PROGRESS_TIMER, send_progress);
+ break;
+ /* This event signals progress on an outgoing call */
+ case FTDM_SIGEVENT_PROGRESS_MEDIA:
+ ftdm_log(FTDM_LOG_NOTICE, "Progress message received in channel %d:%d\n", sigmsg->span_id, sigmsg->chan_id);
+ break;
+ /* This event signals answer in an outgoing call */
+ case FTDM_SIGEVENT_UP:
+ ftdm_log(FTDM_LOG_NOTICE, "Answer received in channel %d:%d\n", sigmsg->span_id, sigmsg->chan_id);
+ /* now the channel is answered and we can use
+ * ftdm_channel_wait() to wait for input/output in a channel (equivalent to poll() or select())
+ * ftdm_channel_read() to read available data in a channel
+ * ftdm_channel_write() to write to the channel */
+ break;
+ /* This event signals hangup from the other end */
+ case FTDM_SIGEVENT_STOP:
+ ftdm_log(FTDM_LOG_NOTICE, "Hangup received in channel %d:%d\n", sigmsg->span_id, sigmsg->chan_id);
+ if (g_outgoing_channel == sigmsg->channel) {
+ g_outgoing_channel = NULL;
+ }
+ /* release any timer for this channel */
+ release_timers(sigmsg->channel);
+ /* acknowledge the hangup */
+ ftdm_channel_call_hangup(sigmsg->channel);
+ break;
+ default:
+ ftdm_log(FTDM_LOG_WARNING, "Unhandled event %s in channel %d:%d\n", ftdm_signal_event2str(sigmsg->event_id),
+ sigmsg->span_id, sigmsg->chan_id);
+ break;
+ }
+ return FTDM_SUCCESS;
+}
+
+static void place_call(const ftdm_span_t *span, const char *number)
+{
+ ftdm_channel_t *ftdmchan = NULL;
+ ftdm_caller_data_t caller_data = {{ 0 }};
+ ftdm_status_t status = FTDM_FAIL;
+
+ /* set destiny number */
+ ftdm_set_string(caller_data.dnis.digits, number);
+
+ /* set callerid */
+ ftdm_set_string(caller_data.cid_name, "testsangomaboost");
+ ftdm_set_string(caller_data.cid_num.digits, "1234");
+
+ /* request to search for an outgoing channel top down with the given caller data.
+ * it is also an option to use ftdm_channel_open_by_group to let freetdm hunt
+ * an available channel in a given group instead of per span
+ * */
+ status = ftdm_channel_open_by_span(ftdm_span_get_id(span), FTDM_TOP_DOWN, &caller_data, &ftdmchan);
+ if (status != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_ERROR, "Failed to originate call\n");
+ return;
+ }
+
+ g_outgoing_channel = ftdmchan;
+
+ /* set the caller data for the outgoing channel */
+ ftdm_channel_set_caller_data(ftdmchan, &caller_data);
+
+ status = ftdm_channel_call_place(ftdmchan);
+ if (status != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_ERROR, "Failed to originate call\n");
+ return;
+ }
+
+ /* this is required to initialize the outgoing channel */
+ ftdm_channel_init(ftdmchan);
+}
+
+#define ARRLEN(arr) (sizeof(arr)/sizeof(arr[0]))
+int main(int argc, char *argv[])
+{
+ /* span names can be any null-terminated string, does not need to be a wanpipe port */
+ int span_numbers[32];
+ char span_names[ARRLEN(span_numbers)][ARRLEN(span_numbers)];
+ const char *spanname = NULL;
+ char wpchans[25];
+ unsigned configured = 0;
+ int i, spanno;
+ int numspans = 0;
+ ftdm_status_t status;
+ ftdm_span_t *span_list[ARRLEN(span_numbers)];
+ ftdm_span_t *span;
+ ftdm_channel_config_t chan_config;
+ ftdm_conf_parameter_t parameters[20];
+ char *todial = NULL;
+ int32_t ticks = 0;
+
+ /* register a handler to shutdown things properly */
+#ifdef _WIN64
+ // still trying to figure this one out otherwise triggers error
+ if (signal(SIGINT, interrupt_requested) < 0) {
+#else
+ if (signal(SIGINT, interrupt_requested) == SIG_ERR) {
+#endif
+ fprintf(stderr, "Could not set the SIGINT signal handler: %s\n", strerror(errno));
+ exit(-1);
+ }
+
+ for (i = 1; i < argc; i++) {
+ if (argv[i][0] == '-' && argv[i][1] == 'd') {
+ i++;
+ if (i >= argc) {
+ fprintf(stderr, "Error, -d specified but no number to dial!\n");
+ exit(1);
+ }
+ todial = argv[i];
+ if (!strlen(todial)) {
+ todial = NULL;
+ }
+ printf("Number to dial: %s\n", todial);
+ continue;
+ }
+ spanno = atoi(argv[i]);
+ span_numbers[numspans] = spanno;
+ snprintf(span_names[numspans], sizeof(span_names[numspans]), "wanpipe%d", spanno);
+ numspans++;
+ }
+
+ if (!numspans) {
+ fprintf(stderr, "please specify a at least 1 wanpipe port number\n");
+ exit(-1);
+ }
+
+ /* clear any outstanding timers */
+ memset(&g_timers, 0, sizeof(g_timers));
+
+ /* set the logging level to use */
+ ftdm_global_set_default_logger(FTDM_LOG_LEVEL_DEBUG);
+
+ /* this is optional.
+ * cpu monitor is a default feature in freetdm that launches 1 thread
+ * to monitor system-wide CPU usage. If it goes above a predefined threshold
+ * it will stop accepting calls to try to protect the quality of current calls */
+ ftdm_cpu_monitor_disable();
+
+
+ /* Initialize the FTDM library */
+ if (ftdm_global_init() != FTDM_SUCCESS) {
+ fprintf(stderr, "Error loading FreeTDM\n");
+ exit(-1);
+ }
+
+ /* create the schedule mutex */
+ ftdm_mutex_create(&g_schedule_mutex);
+
+ /* now we can start creating spans */
+ memset(&chan_config, 0, sizeof(chan_config));
+ strncpy(chan_config.group_name, "mygroup", sizeof(chan_config.group_name)-1);
+ chan_config.group_name[sizeof(chan_config.group_name)-1] = 0;
+ for (i = 0; i < numspans; i++) {
+ spanname = span_names[i];
+ /* "wanpipe" is the special I/O identifier for Sangoma devices */
+ ftdm_log(FTDM_LOG_NOTICE, "Creating span %s\n", spanname);
+ status = ftdm_span_create("wanpipe", spanname, &span_list[i]);
+ if (status != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_CRIT, "Failed to create span %s\n", spanname);
+ goto done;
+ }
+ span = span_list[i];
+ spanno = span_numbers[i];
+
+ /* set the trunk type for the span */
+ ftdm_span_set_trunk_type(span_list[i], FTDM_TRUNK_T1);
+
+ /* configure B channels (syntax for wanpipe channels is span:low_chan-high_chan) */
+ chan_config.type = FTDM_CHAN_TYPE_B;
+ snprintf(wpchans, sizeof(wpchans), "%d:1-23", spanno);
+ ftdm_configure_span_channels(span, wpchans, &chan_config, &configured);
+ ftdm_log(FTDM_LOG_NOTICE, "registered %d b channels\n", configured);
+ }
+
+ /* At this point FreeTDM is ready to be used, the spans defined in freetdm.conf have the basic I/O board configuration
+ * but no telephony signaling configuration at all. */
+ ftdm_log(FTDM_LOG_NOTICE, "FreeTDM loaded ...\n");
+
+ /* now we can start configuring signaling for the previously created spans */
+ for (i = 0; i < numspans; i++) {
+ spanname = span_names[i];
+
+ /* Retrieve a span by name (as specified in ftdm_span_create()) */
+ if (ftdm_span_find_by_name(spanname, &span) != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_ERROR, "Error finding FreeTDM span %s\n", ftdm_span_get_name(span));
+ goto done;
+ }
+
+ /* prepare the configuration parameters that will be sent down to the signaling stack, the array of paramters must be terminated by an
+ * array element with a null .var member */
+
+ /* for sangoma_boost signaling (abstraction signaling used by Sangoma for PRI, BRI and SS7) the first parameter you must send
+ * is sigmod, which must be either sangoma_prid, if you have the PRI stack available, or sangoma_brid for the BRI stack */
+ parameters[0].var = "sigmod";
+ parameters[0].val = "sangoma_prid";
+
+ /* following parameters are signaling stack specific, this ones are for PRI */
+ parameters[1].var = "switchtype";
+ parameters[1].val = "national";
+
+ parameters[2].var = "signalling";
+ parameters[2].val = "pri_cpe";
+
+ /*
+ * parameters[3].var = "nfas_primary";
+ * parameters[3].val = "4"; //span number
+ *
+ * parameters[4].var = "nfas_secondary";
+ * parameters[4].val = "2"; //span number
+ *
+ * parameters[5].var = "nfas_group";
+ * parameters[5].val = "1";
+ * */
+
+
+ /* the last parameter .var member must be NULL! */
+ parameters[3].var = NULL;
+
+ /* send the configuration values down to the stack */
+ if (ftdm_configure_span_signaling(span, "sangoma_boost", on_signaling_event, parameters) != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_ERROR, "Error configuring sangoma_boost signaling abstraction in span %s\n", ftdm_span_get_name(span));
+ goto done;
+ }
+
+ }
+
+
+ /* configuration succeeded, we can proceed now to start each span
+ * This step will launch at least 1 background (may be more, depending on the signaling stack used)
+ * to handle *ALL* signaling events for this span, your on_signaling_event callback will be called always
+ * in one of those infraestructure threads and you MUST NOT block in that handler to avoid delays and errors
+ * in the signaling processing for any call.
+ * */
+ for (i = 0; i < numspans; i++) {
+ spanname = span_names[i];
+ /* Retrieve a span by name (as specified in ftdm_span_create()) */
+ if (ftdm_span_find_by_name(spanname, &span) != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_ERROR, "Error finding FreeTDM span %s\n", ftdm_span_get_name(span));
+ goto done;
+ }
+
+ if (ftdm_span_start(span) != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_ERROR, "Failing starting signaling on span %s\n", ftdm_span_get_name(span));
+ goto done;
+ }
+
+ }
+
+ app_running = 1;
+
+ /* Retrieve the first created span to place the call (if dialing was specified) */
+ if (ftdm_span_find(1, &span) != FTDM_SUCCESS) {
+ ftdm_log(FTDM_LOG_ERROR, "Error finding FreeTDM span 1\n");
+ goto done;
+ }
+
+ /* The application thread can go on and do anything else, like waiting for a shutdown signal */
+ while(ftdm_running() && app_running) {
+ ftdm_sleep(1000);
+ run_timers();
+ ticks++;
+ if (!(ticks % 10) && todial && !g_outgoing_channel) {
+ ftdm_log(FTDM_LOG_NOTICE, "Originating call to number %s\n", todial);
+ place_call(span, todial);
+ }
+ }
+
+ done:
+
+ ftdm_log(FTDM_LOG_NOTICE, "Shutting down FreeTDM ...\n");
+
+ ftdm_mutex_destroy(&g_schedule_mutex);
+
+ /* whenever you're done, this function will shutdown the signaling threads in any span that was started */
+ ftdm_global_destroy();
+
+ printf("Terminated!\n");
+
+ sleep(2);
+
+ exit(0);
+}
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */
</ins></span></pre>
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