Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | |
| 22 | /** |
| 23 | * simpleua.c |
| 24 | * |
| 25 | * This is a very simple SIP user agent complete with media. The user |
| 26 | * agent should do a proper SDP negotiation and start RTP media once |
| 27 | * SDP negotiation has completed. |
| 28 | * |
| 29 | * This program does not register to SIP server. |
| 30 | * |
| 31 | * Capabilities to be demonstrated here: |
| 32 | * - Basic call |
| 33 | * - Should support IPv6 (not tested) |
| 34 | * - UDP transport at port 5060 (hard coded) |
| 35 | * - RTP socket at port 4000 (hard coded) |
| 36 | * - proper SDP negotiation |
| 37 | * - PCMA/PCMU codec only. |
| 38 | * - Audio/media to sound device. |
| 39 | * |
| 40 | * |
| 41 | * Usage: |
| 42 | * - To make outgoing call, start simpleua with the URL of remote |
| 43 | * destination to contact. |
| 44 | * E.g.: |
| 45 | * simpleua sip:user@remote |
| 46 | * |
| 47 | * - Incoming calls will automatically be answered with 180, then 200. |
| 48 | * |
| 49 | * This program does not disconnect call. |
| 50 | * |
| 51 | * This program will quit once it has completed a single call. |
| 52 | */ |
| 53 | |
| 54 | /* Include all headers. */ |
| 55 | #include <pjsip.h> |
| 56 | #include <pjmedia.h> |
| 57 | #include <pjmedia-codec.h> |
| 58 | #include <pjsip_ua.h> |
| 59 | #include <pjsip_simple.h> |
| 60 | #include <pjlib-util.h> |
| 61 | #include <pjlib.h> |
| 62 | |
| 63 | /* For logging purpose. */ |
| 64 | #define THIS_FILE "simpleua.c" |
| 65 | |
| 66 | #include "util.h" |
| 67 | |
| 68 | |
| 69 | /* Settings */ |
| 70 | #define AF pj_AF_INET() /* Change to pj_AF_INET6() for IPv6. |
| 71 | * PJ_HAS_IPV6 must be enabled and |
| 72 | * your system must support IPv6. */ |
| 73 | #if 0 |
| 74 | #define SIP_PORT 5080 /* Listening SIP port */ |
| 75 | #define RTP_PORT 5000 /* RTP port */ |
| 76 | #else |
| 77 | #define SIP_PORT 5060 /* Listening SIP port */ |
| 78 | #define RTP_PORT 4000 /* RTP port */ |
| 79 | #endif |
| 80 | |
| 81 | #define MAX_MEDIA_CNT 2 /* Media count, set to 1 for audio |
| 82 | * only or 2 for audio and video */ |
| 83 | |
| 84 | /* |
| 85 | * Static variables. |
| 86 | */ |
| 87 | |
| 88 | static pj_bool_t g_complete; /* Quit flag. */ |
| 89 | static pjsip_endpoint *g_endpt; /* SIP endpoint. */ |
| 90 | static pj_caching_pool cp; /* Global pool factory. */ |
| 91 | |
| 92 | static pjmedia_endpt *g_med_endpt; /* Media endpoint. */ |
| 93 | |
| 94 | static pjmedia_transport_info g_med_tpinfo[MAX_MEDIA_CNT]; |
| 95 | /* Socket info for media */ |
| 96 | static pjmedia_transport *g_med_transport[MAX_MEDIA_CNT]; |
| 97 | /* Media stream transport */ |
| 98 | static pjmedia_sock_info g_sock_info[MAX_MEDIA_CNT]; |
| 99 | /* Socket info array */ |
| 100 | |
| 101 | /* Call variables: */ |
| 102 | static pjsip_inv_session *g_inv; /* Current invite session. */ |
| 103 | static pjmedia_stream *g_med_stream; /* Call's audio stream. */ |
| 104 | static pjmedia_snd_port *g_snd_port; /* Sound device. */ |
| 105 | |
| 106 | #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| 107 | static pjmedia_vid_stream *g_med_vstream; /* Call's video stream. */ |
| 108 | static pjmedia_vid_port *g_vid_capturer;/* Call's video capturer. */ |
| 109 | static pjmedia_vid_port *g_vid_renderer;/* Call's video renderer. */ |
| 110 | #endif /* PJMEDIA_HAS_VIDEO */ |
| 111 | |
| 112 | /* |
| 113 | * Prototypes: |
| 114 | */ |
| 115 | |
| 116 | /* Callback to be called when SDP negotiation is done in the call: */ |
| 117 | static void call_on_media_update( pjsip_inv_session *inv, |
| 118 | pj_status_t status); |
| 119 | |
| 120 | /* Callback to be called when invite session's state has changed: */ |
| 121 | static void call_on_state_changed( pjsip_inv_session *inv, |
| 122 | pjsip_event *e); |
| 123 | |
| 124 | /* Callback to be called when dialog has forked: */ |
| 125 | static void call_on_forked(pjsip_inv_session *inv, pjsip_event *e); |
| 126 | |
| 127 | /* Callback to be called to handle incoming requests outside dialogs: */ |
| 128 | static pj_bool_t on_rx_request( pjsip_rx_data *rdata ); |
| 129 | |
| 130 | |
| 131 | |
| 132 | |
| 133 | /* This is a PJSIP module to be registered by application to handle |
| 134 | * incoming requests outside any dialogs/transactions. The main purpose |
| 135 | * here is to handle incoming INVITE request message, where we will |
| 136 | * create a dialog and INVITE session for it. |
| 137 | */ |
| 138 | static pjsip_module mod_simpleua = |
| 139 | { |
| 140 | NULL, NULL, /* prev, next. */ |
| 141 | { "mod-simpleua", 12 }, /* Name. */ |
| 142 | -1, /* Id */ |
| 143 | PJSIP_MOD_PRIORITY_APPLICATION, /* Priority */ |
| 144 | NULL, /* load() */ |
| 145 | NULL, /* start() */ |
| 146 | NULL, /* stop() */ |
| 147 | NULL, /* unload() */ |
| 148 | &on_rx_request, /* on_rx_request() */ |
| 149 | NULL, /* on_rx_response() */ |
| 150 | NULL, /* on_tx_request. */ |
| 151 | NULL, /* on_tx_response() */ |
| 152 | NULL, /* on_tsx_state() */ |
| 153 | }; |
| 154 | |
| 155 | |
| 156 | /* Notification on incoming messages */ |
| 157 | static pj_bool_t logging_on_rx_msg(pjsip_rx_data *rdata) |
| 158 | { |
| 159 | PJ_LOG(4,(THIS_FILE, "RX %d bytes %s from %s %s:%d:\n" |
| 160 | "%.*s\n" |
| 161 | "--end msg--", |
| 162 | rdata->msg_info.len, |
| 163 | pjsip_rx_data_get_info(rdata), |
| 164 | rdata->tp_info.transport->type_name, |
| 165 | rdata->pkt_info.src_name, |
| 166 | rdata->pkt_info.src_port, |
| 167 | (int)rdata->msg_info.len, |
| 168 | rdata->msg_info.msg_buf)); |
| 169 | |
| 170 | /* Always return false, otherwise messages will not get processed! */ |
| 171 | return PJ_FALSE; |
| 172 | } |
| 173 | |
| 174 | /* Notification on outgoing messages */ |
| 175 | static pj_status_t logging_on_tx_msg(pjsip_tx_data *tdata) |
| 176 | { |
| 177 | |
| 178 | /* Important note: |
| 179 | * tp_info field is only valid after outgoing messages has passed |
| 180 | * transport layer. So don't try to access tp_info when the module |
| 181 | * has lower priority than transport layer. |
| 182 | */ |
| 183 | |
| 184 | PJ_LOG(4,(THIS_FILE, "TX %d bytes %s to %s %s:%d:\n" |
| 185 | "%.*s\n" |
| 186 | "--end msg--", |
| 187 | (tdata->buf.cur - tdata->buf.start), |
| 188 | pjsip_tx_data_get_info(tdata), |
| 189 | tdata->tp_info.transport->type_name, |
| 190 | tdata->tp_info.dst_name, |
| 191 | tdata->tp_info.dst_port, |
| 192 | (int)(tdata->buf.cur - tdata->buf.start), |
| 193 | tdata->buf.start)); |
| 194 | |
| 195 | /* Always return success, otherwise message will not get sent! */ |
| 196 | return PJ_SUCCESS; |
| 197 | } |
| 198 | |
| 199 | /* The module instance. */ |
| 200 | static pjsip_module msg_logger = |
| 201 | { |
| 202 | NULL, NULL, /* prev, next. */ |
| 203 | { "mod-msg-log", 13 }, /* Name. */ |
| 204 | -1, /* Id */ |
| 205 | PJSIP_MOD_PRIORITY_TRANSPORT_LAYER-1,/* Priority */ |
| 206 | NULL, /* load() */ |
| 207 | NULL, /* start() */ |
| 208 | NULL, /* stop() */ |
| 209 | NULL, /* unload() */ |
| 210 | &logging_on_rx_msg, /* on_rx_request() */ |
| 211 | &logging_on_rx_msg, /* on_rx_response() */ |
| 212 | &logging_on_tx_msg, /* on_tx_request. */ |
| 213 | &logging_on_tx_msg, /* on_tx_response() */ |
| 214 | NULL, /* on_tsx_state() */ |
| 215 | |
| 216 | }; |
| 217 | |
| 218 | |
| 219 | /* |
| 220 | * main() |
| 221 | * |
| 222 | * If called with argument, treat argument as SIP URL to be called. |
| 223 | * Otherwise wait for incoming calls. |
| 224 | */ |
| 225 | int main(int argc, char *argv[]) |
| 226 | { |
| 227 | pj_pool_t *pool = NULL; |
| 228 | pj_status_t status; |
| 229 | unsigned i; |
| 230 | |
| 231 | /* Must init PJLIB first: */ |
| 232 | status = pj_init(); |
| 233 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 234 | |
| 235 | pj_log_set_level(5); |
| 236 | |
| 237 | /* Then init PJLIB-UTIL: */ |
| 238 | status = pjlib_util_init(); |
| 239 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 240 | |
| 241 | |
| 242 | /* Must create a pool factory before we can allocate any memory. */ |
| 243 | pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0); |
| 244 | |
| 245 | |
| 246 | /* Create global endpoint: */ |
| 247 | { |
| 248 | const pj_str_t *hostname; |
| 249 | const char *endpt_name; |
| 250 | |
| 251 | /* Endpoint MUST be assigned a globally unique name. |
| 252 | * The name will be used as the hostname in Warning header. |
| 253 | */ |
| 254 | |
| 255 | /* For this implementation, we'll use hostname for simplicity */ |
| 256 | hostname = pj_gethostname(); |
| 257 | endpt_name = hostname->ptr; |
| 258 | |
| 259 | /* Create the endpoint: */ |
| 260 | |
| 261 | status = pjsip_endpt_create(&cp.factory, endpt_name, |
| 262 | &g_endpt); |
| 263 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 264 | } |
| 265 | |
| 266 | |
| 267 | /* |
| 268 | * Add UDP transport, with hard-coded port |
| 269 | * Alternatively, application can use pjsip_udp_transport_attach() to |
| 270 | * start UDP transport, if it already has an UDP socket (e.g. after it |
| 271 | * resolves the address with STUN). |
| 272 | */ |
| 273 | { |
| 274 | pj_sockaddr addr; |
| 275 | |
| 276 | pj_sockaddr_init(AF, &addr, NULL, (pj_uint16_t)SIP_PORT); |
| 277 | |
| 278 | if (AF == pj_AF_INET()) { |
| 279 | status = pjsip_udp_transport_start( g_endpt, &addr.ipv4, NULL, |
| 280 | 1, NULL); |
| 281 | } else if (AF == pj_AF_INET6()) { |
| 282 | status = pjsip_udp_transport_start6(g_endpt, &addr.ipv6, NULL, |
| 283 | 1, NULL); |
| 284 | } else { |
| 285 | status = PJ_EAFNOTSUP; |
| 286 | } |
| 287 | |
| 288 | if (status != PJ_SUCCESS) { |
| 289 | app_perror(THIS_FILE, "Unable to start UDP transport", status); |
| 290 | return 1; |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | |
| 295 | /* |
| 296 | * Init transaction layer. |
| 297 | * This will create/initialize transaction hash tables etc. |
| 298 | */ |
| 299 | status = pjsip_tsx_layer_init_module(g_endpt); |
| 300 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 301 | |
| 302 | |
| 303 | /* |
| 304 | * Initialize UA layer module. |
| 305 | * This will create/initialize dialog hash tables etc. |
| 306 | */ |
| 307 | status = pjsip_ua_init_module( g_endpt, NULL ); |
| 308 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 309 | |
| 310 | |
| 311 | /* |
| 312 | * Init invite session module. |
| 313 | * The invite session module initialization takes additional argument, |
| 314 | * i.e. a structure containing callbacks to be called on specific |
| 315 | * occurence of events. |
| 316 | * |
| 317 | * The on_state_changed and on_new_session callbacks are mandatory. |
| 318 | * Application must supply the callback function. |
| 319 | * |
| 320 | * We use on_media_update() callback in this application to start |
| 321 | * media transmission. |
| 322 | */ |
| 323 | { |
| 324 | pjsip_inv_callback inv_cb; |
| 325 | |
| 326 | /* Init the callback for INVITE session: */ |
| 327 | pj_bzero(&inv_cb, sizeof(inv_cb)); |
| 328 | inv_cb.on_state_changed = &call_on_state_changed; |
| 329 | inv_cb.on_new_session = &call_on_forked; |
| 330 | inv_cb.on_media_update = &call_on_media_update; |
| 331 | |
| 332 | /* Initialize invite session module: */ |
| 333 | status = pjsip_inv_usage_init(g_endpt, &inv_cb); |
| 334 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 335 | } |
| 336 | |
| 337 | /* Initialize 100rel support */ |
| 338 | status = pjsip_100rel_init_module(g_endpt); |
| 339 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, status); |
| 340 | |
| 341 | /* |
| 342 | * Register our module to receive incoming requests. |
| 343 | */ |
| 344 | status = pjsip_endpt_register_module( g_endpt, &mod_simpleua); |
| 345 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 346 | |
| 347 | /* |
| 348 | * Register message logger module. |
| 349 | */ |
| 350 | status = pjsip_endpt_register_module( g_endpt, &msg_logger); |
| 351 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 352 | |
| 353 | |
| 354 | /* |
| 355 | * Initialize media endpoint. |
| 356 | * This will implicitly initialize PJMEDIA too. |
| 357 | */ |
| 358 | #if PJ_HAS_THREADS |
| 359 | status = pjmedia_endpt_create(&cp.factory, NULL, 1, &g_med_endpt); |
| 360 | #else |
| 361 | status = pjmedia_endpt_create(&cp.factory, |
| 362 | pjsip_endpt_get_ioqueue(g_endpt), |
| 363 | 0, &g_med_endpt); |
| 364 | #endif |
| 365 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 366 | |
| 367 | /* |
| 368 | * Add PCMA/PCMU codec to the media endpoint. |
| 369 | */ |
| 370 | #if defined(PJMEDIA_HAS_G711_CODEC) && PJMEDIA_HAS_G711_CODEC!=0 |
| 371 | status = pjmedia_codec_g711_init(g_med_endpt); |
| 372 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 373 | #endif |
| 374 | |
| 375 | |
| 376 | #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| 377 | /* Init video subsystem */ |
| 378 | pool = pjmedia_endpt_create_pool(g_med_endpt, "Video subsystem", 512, 512); |
| 379 | status = pjmedia_video_format_mgr_create(pool, 64, 0, NULL); |
| 380 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 381 | status = pjmedia_converter_mgr_create(pool, NULL); |
| 382 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 383 | status = pjmedia_vid_codec_mgr_create(pool, NULL); |
| 384 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 385 | status = pjmedia_vid_dev_subsys_init(&cp.factory); |
| 386 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 387 | |
| 388 | # if defined(PJMEDIA_HAS_FFMPEG_VID_CODEC) && PJMEDIA_HAS_FFMPEG_VID_CODEC!=0 |
| 389 | /* Init ffmpeg video codecs */ |
| 390 | status = pjmedia_codec_ffmpeg_vid_init(NULL, &cp.factory); |
| 391 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 392 | # endif /* PJMEDIA_HAS_FFMPEG_VID_CODEC */ |
| 393 | |
| 394 | #endif /* PJMEDIA_HAS_VIDEO */ |
| 395 | |
| 396 | /* |
| 397 | * Create media transport used to send/receive RTP/RTCP socket. |
| 398 | * One media transport is needed for each call. Application may |
| 399 | * opt to re-use the same media transport for subsequent calls. |
| 400 | */ |
| 401 | for (i = 0; i < PJ_ARRAY_SIZE(g_med_transport); ++i) { |
| 402 | status = pjmedia_transport_udp_create3(g_med_endpt, AF, NULL, NULL, |
| 403 | RTP_PORT + i*2, 0, |
| 404 | &g_med_transport[i]); |
| 405 | if (status != PJ_SUCCESS) { |
| 406 | app_perror(THIS_FILE, "Unable to create media transport", status); |
| 407 | return 1; |
| 408 | } |
| 409 | |
| 410 | /* |
| 411 | * Get socket info (address, port) of the media transport. We will |
| 412 | * need this info to create SDP (i.e. the address and port info in |
| 413 | * the SDP). |
| 414 | */ |
| 415 | pjmedia_transport_info_init(&g_med_tpinfo[i]); |
| 416 | pjmedia_transport_get_info(g_med_transport[i], &g_med_tpinfo[i]); |
| 417 | |
| 418 | pj_memcpy(&g_sock_info[i], &g_med_tpinfo[i].sock_info, |
| 419 | sizeof(pjmedia_sock_info)); |
| 420 | } |
| 421 | |
| 422 | /* |
| 423 | * If URL is specified, then make call immediately. |
| 424 | */ |
| 425 | if (argc > 1) { |
| 426 | pj_sockaddr hostaddr; |
| 427 | char hostip[PJ_INET6_ADDRSTRLEN+2]; |
| 428 | char temp[80]; |
| 429 | pj_str_t dst_uri = pj_str(argv[1]); |
| 430 | pj_str_t local_uri; |
| 431 | pjsip_dialog *dlg; |
| 432 | pjmedia_sdp_session *local_sdp; |
| 433 | pjsip_tx_data *tdata; |
| 434 | |
| 435 | if (pj_gethostip(AF, &hostaddr) != PJ_SUCCESS) { |
| 436 | app_perror(THIS_FILE, "Unable to retrieve local host IP", status); |
| 437 | return 1; |
| 438 | } |
| 439 | pj_sockaddr_print(&hostaddr, hostip, sizeof(hostip), 2); |
| 440 | |
| 441 | pj_ansi_sprintf(temp, "<sip:simpleuac@%s:%d>", |
| 442 | hostip, SIP_PORT); |
| 443 | local_uri = pj_str(temp); |
| 444 | |
| 445 | /* Create UAC dialog */ |
| 446 | status = pjsip_dlg_create_uac( pjsip_ua_instance(), |
| 447 | &local_uri, /* local URI */ |
| 448 | &local_uri, /* local Contact */ |
| 449 | &dst_uri, /* remote URI */ |
| 450 | &dst_uri, /* remote target */ |
| 451 | &dlg); /* dialog */ |
| 452 | if (status != PJ_SUCCESS) { |
| 453 | app_perror(THIS_FILE, "Unable to create UAC dialog", status); |
| 454 | return 1; |
| 455 | } |
| 456 | |
| 457 | /* If we expect the outgoing INVITE to be challenged, then we should |
| 458 | * put the credentials in the dialog here, with something like this: |
| 459 | * |
| 460 | { |
| 461 | pjsip_cred_info cred[1]; |
| 462 | |
| 463 | cred[0].realm = pj_str("sip.server.realm"); |
| 464 | cred[0].scheme = pj_str("digest"); |
| 465 | cred[0].username = pj_str("theuser"); |
| 466 | cred[0].data_type = PJSIP_CRED_DATA_PLAIN_PASSWD; |
| 467 | cred[0].data = pj_str("thepassword"); |
| 468 | |
| 469 | pjsip_auth_clt_set_credentials( &dlg->auth_sess, 1, cred); |
| 470 | } |
| 471 | * |
| 472 | */ |
| 473 | |
| 474 | |
| 475 | /* Get the SDP body to be put in the outgoing INVITE, by asking |
| 476 | * media endpoint to create one for us. |
| 477 | */ |
| 478 | status = pjmedia_endpt_create_sdp( g_med_endpt, /* the media endpt */ |
| 479 | dlg->pool, /* pool. */ |
| 480 | MAX_MEDIA_CNT, /* # of streams */ |
| 481 | g_sock_info, /* RTP sock info */ |
| 482 | &local_sdp); /* the SDP result */ |
| 483 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 484 | |
| 485 | |
| 486 | |
| 487 | /* Create the INVITE session, and pass the SDP returned earlier |
| 488 | * as the session's initial capability. |
| 489 | */ |
| 490 | status = pjsip_inv_create_uac( dlg, local_sdp, 0, &g_inv); |
| 491 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 492 | |
| 493 | /* If we want the initial INVITE to travel to specific SIP proxies, |
| 494 | * then we should put the initial dialog's route set here. The final |
| 495 | * route set will be updated once a dialog has been established. |
| 496 | * To set the dialog's initial route set, we do it with something |
| 497 | * like this: |
| 498 | * |
| 499 | { |
| 500 | pjsip_route_hdr route_set; |
| 501 | pjsip_route_hdr *route; |
| 502 | const pj_str_t hname = { "Route", 5 }; |
| 503 | char *uri = "sip:proxy.server;lr"; |
| 504 | |
| 505 | pj_list_init(&route_set); |
| 506 | |
| 507 | route = pjsip_parse_hdr( dlg->pool, &hname, |
| 508 | uri, strlen(uri), |
| 509 | NULL); |
| 510 | PJ_ASSERT_RETURN(route != NULL, 1); |
| 511 | pj_list_push_back(&route_set, route); |
| 512 | |
| 513 | pjsip_dlg_set_route_set(dlg, &route_set); |
| 514 | } |
| 515 | * |
| 516 | * Note that Route URI SHOULD have an ";lr" parameter! |
| 517 | */ |
| 518 | |
| 519 | /* Create initial INVITE request. |
| 520 | * This INVITE request will contain a perfectly good request and |
| 521 | * an SDP body as well. |
| 522 | */ |
| 523 | status = pjsip_inv_invite(g_inv, &tdata); |
| 524 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 525 | |
| 526 | |
| 527 | |
| 528 | /* Send initial INVITE request. |
| 529 | * From now on, the invite session's state will be reported to us |
| 530 | * via the invite session callbacks. |
| 531 | */ |
| 532 | status = pjsip_inv_send_msg(g_inv, tdata); |
| 533 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 534 | |
| 535 | |
| 536 | } else { |
| 537 | |
| 538 | /* No URL to make call to */ |
| 539 | |
| 540 | PJ_LOG(3,(THIS_FILE, "Ready to accept incoming calls...")); |
| 541 | } |
| 542 | |
| 543 | |
| 544 | /* Loop until one call is completed */ |
| 545 | for (;!g_complete;) { |
| 546 | pj_time_val timeout = {0, 10}; |
| 547 | pjsip_endpt_handle_events(g_endpt, &timeout); |
| 548 | } |
| 549 | |
| 550 | /* On exit, dump current memory usage: */ |
| 551 | dump_pool_usage(THIS_FILE, &cp); |
| 552 | |
| 553 | /* Destroy audio ports. Destroy the audio port first |
| 554 | * before the stream since the audio port has threads |
| 555 | * that get/put frames to the stream. |
| 556 | */ |
| 557 | if (g_snd_port) |
| 558 | pjmedia_snd_port_destroy(g_snd_port); |
| 559 | |
| 560 | #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| 561 | /* Destroy video ports */ |
| 562 | if (g_vid_capturer) |
| 563 | pjmedia_vid_port_destroy(g_vid_capturer); |
| 564 | if (g_vid_renderer) |
| 565 | pjmedia_vid_port_destroy(g_vid_renderer); |
| 566 | #endif |
| 567 | |
| 568 | /* Destroy streams */ |
| 569 | if (g_med_stream) |
| 570 | pjmedia_stream_destroy(g_med_stream); |
| 571 | #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| 572 | if (g_med_vstream) |
| 573 | pjmedia_vid_stream_destroy(g_med_vstream); |
| 574 | |
| 575 | /* Deinit ffmpeg codec */ |
| 576 | # if defined(PJMEDIA_HAS_FFMPEG_VID_CODEC) && PJMEDIA_HAS_FFMPEG_VID_CODEC!=0 |
| 577 | pjmedia_codec_ffmpeg_vid_deinit(); |
| 578 | # endif |
| 579 | |
| 580 | #endif |
| 581 | |
| 582 | /* Destroy media transports */ |
| 583 | for (i = 0; i < MAX_MEDIA_CNT; ++i) { |
| 584 | if (g_med_transport[i]) |
| 585 | pjmedia_transport_close(g_med_transport[i]); |
| 586 | } |
| 587 | |
| 588 | /* Deinit pjmedia endpoint */ |
| 589 | if (g_med_endpt) |
| 590 | pjmedia_endpt_destroy(g_med_endpt); |
| 591 | |
| 592 | /* Deinit pjsip endpoint */ |
| 593 | if (g_endpt) |
| 594 | pjsip_endpt_destroy(g_endpt); |
| 595 | |
| 596 | /* Release pool */ |
| 597 | if (pool) |
| 598 | pj_pool_release(pool); |
| 599 | |
| 600 | return 0; |
| 601 | } |
| 602 | |
| 603 | |
| 604 | |
| 605 | /* |
| 606 | * Callback when INVITE session state has changed. |
| 607 | * This callback is registered when the invite session module is initialized. |
| 608 | * We mostly want to know when the invite session has been disconnected, |
| 609 | * so that we can quit the application. |
| 610 | */ |
| 611 | static void call_on_state_changed( pjsip_inv_session *inv, |
| 612 | pjsip_event *e) |
| 613 | { |
| 614 | PJ_UNUSED_ARG(e); |
| 615 | |
| 616 | if (inv->state == PJSIP_INV_STATE_DISCONNECTED) { |
| 617 | |
| 618 | PJ_LOG(3,(THIS_FILE, "Call DISCONNECTED [reason=%d (%s)]", |
| 619 | inv->cause, |
| 620 | pjsip_get_status_text(inv->cause)->ptr)); |
| 621 | |
| 622 | PJ_LOG(3,(THIS_FILE, "One call completed, application quitting...")); |
| 623 | g_complete = 1; |
| 624 | |
| 625 | } else { |
| 626 | |
| 627 | PJ_LOG(3,(THIS_FILE, "Call state changed to %s", |
| 628 | pjsip_inv_state_name(inv->state))); |
| 629 | |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | |
| 634 | /* This callback is called when dialog has forked. */ |
| 635 | static void call_on_forked(pjsip_inv_session *inv, pjsip_event *e) |
| 636 | { |
| 637 | /* To be done... */ |
| 638 | PJ_UNUSED_ARG(inv); |
| 639 | PJ_UNUSED_ARG(e); |
| 640 | } |
| 641 | |
| 642 | |
| 643 | /* |
| 644 | * Callback when incoming requests outside any transactions and any |
| 645 | * dialogs are received. We're only interested to hande incoming INVITE |
| 646 | * request, and we'll reject any other requests with 500 response. |
| 647 | */ |
| 648 | static pj_bool_t on_rx_request( pjsip_rx_data *rdata ) |
| 649 | { |
| 650 | pj_sockaddr hostaddr; |
| 651 | char temp[80], hostip[PJ_INET6_ADDRSTRLEN]; |
| 652 | pj_str_t local_uri; |
| 653 | pjsip_dialog *dlg; |
| 654 | pjmedia_sdp_session *local_sdp; |
| 655 | pjsip_tx_data *tdata; |
| 656 | unsigned options = 0; |
| 657 | pj_status_t status; |
| 658 | |
| 659 | |
| 660 | /* |
| 661 | * Respond (statelessly) any non-INVITE requests with 500 |
| 662 | */ |
| 663 | if (rdata->msg_info.msg->line.req.method.id != PJSIP_INVITE_METHOD) { |
| 664 | |
| 665 | if (rdata->msg_info.msg->line.req.method.id != PJSIP_ACK_METHOD) { |
| 666 | pj_str_t reason = pj_str("Simple UA unable to handle " |
| 667 | "this request"); |
| 668 | |
| 669 | pjsip_endpt_respond_stateless( g_endpt, rdata, |
| 670 | 500, &reason, |
| 671 | NULL, NULL); |
| 672 | } |
| 673 | return PJ_TRUE; |
| 674 | } |
| 675 | |
| 676 | |
| 677 | /* |
| 678 | * Reject INVITE if we already have an INVITE session in progress. |
| 679 | */ |
| 680 | if (g_inv) { |
| 681 | |
| 682 | pj_str_t reason = pj_str("Another call is in progress"); |
| 683 | |
| 684 | pjsip_endpt_respond_stateless( g_endpt, rdata, |
| 685 | 500, &reason, |
| 686 | NULL, NULL); |
| 687 | return PJ_TRUE; |
| 688 | |
| 689 | } |
| 690 | |
| 691 | /* Verify that we can handle the request. */ |
| 692 | status = pjsip_inv_verify_request(rdata, &options, NULL, NULL, |
| 693 | g_endpt, NULL); |
| 694 | if (status != PJ_SUCCESS) { |
| 695 | |
| 696 | pj_str_t reason = pj_str("Sorry Simple UA can not handle this INVITE"); |
| 697 | |
| 698 | pjsip_endpt_respond_stateless( g_endpt, rdata, |
| 699 | 500, &reason, |
| 700 | NULL, NULL); |
| 701 | return PJ_TRUE; |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * Generate Contact URI |
| 706 | */ |
| 707 | if (pj_gethostip(AF, &hostaddr) != PJ_SUCCESS) { |
| 708 | app_perror(THIS_FILE, "Unable to retrieve local host IP", status); |
| 709 | return PJ_TRUE; |
| 710 | } |
| 711 | pj_sockaddr_print(&hostaddr, hostip, sizeof(hostip), 2); |
| 712 | |
| 713 | pj_ansi_sprintf(temp, "<sip:simpleuas@%s:%d>", |
| 714 | hostip, SIP_PORT); |
| 715 | local_uri = pj_str(temp); |
| 716 | |
| 717 | /* |
| 718 | * Create UAS dialog. |
| 719 | */ |
| 720 | status = pjsip_dlg_create_uas( pjsip_ua_instance(), |
| 721 | rdata, |
| 722 | &local_uri, /* contact */ |
| 723 | &dlg); |
| 724 | if (status != PJ_SUCCESS) { |
| 725 | pjsip_endpt_respond_stateless(g_endpt, rdata, 500, NULL, |
| 726 | NULL, NULL); |
| 727 | return PJ_TRUE; |
| 728 | } |
| 729 | |
| 730 | /* |
| 731 | * Get media capability from media endpoint: |
| 732 | */ |
| 733 | |
| 734 | status = pjmedia_endpt_create_sdp( g_med_endpt, rdata->tp_info.pool, |
| 735 | MAX_MEDIA_CNT, g_sock_info, &local_sdp); |
| 736 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 737 | |
| 738 | |
| 739 | /* |
| 740 | * Create invite session, and pass both the UAS dialog and the SDP |
| 741 | * capability to the session. |
| 742 | */ |
| 743 | status = pjsip_inv_create_uas( dlg, rdata, local_sdp, 0, &g_inv); |
| 744 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 745 | |
| 746 | |
| 747 | /* |
| 748 | * Initially send 180 response. |
| 749 | * |
| 750 | * The very first response to an INVITE must be created with |
| 751 | * pjsip_inv_initial_answer(). Subsequent responses to the same |
| 752 | * transaction MUST use pjsip_inv_answer(). |
| 753 | */ |
| 754 | status = pjsip_inv_initial_answer(g_inv, rdata, |
| 755 | 180, |
| 756 | NULL, NULL, &tdata); |
| 757 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 758 | |
| 759 | |
| 760 | /* Send the 180 response. */ |
| 761 | status = pjsip_inv_send_msg(g_inv, tdata); |
| 762 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 763 | |
| 764 | |
| 765 | /* |
| 766 | * Now create 200 response. |
| 767 | */ |
| 768 | status = pjsip_inv_answer( g_inv, |
| 769 | 200, NULL, /* st_code and st_text */ |
| 770 | NULL, /* SDP already specified */ |
| 771 | &tdata); |
| 772 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 773 | |
| 774 | /* |
| 775 | * Send the 200 response. |
| 776 | */ |
| 777 | status = pjsip_inv_send_msg(g_inv, tdata); |
| 778 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 779 | |
| 780 | |
| 781 | /* Done. |
| 782 | * When the call is disconnected, it will be reported via the callback. |
| 783 | */ |
| 784 | |
| 785 | return PJ_TRUE; |
| 786 | } |
| 787 | |
| 788 | |
| 789 | |
| 790 | /* |
| 791 | * Callback when SDP negotiation has completed. |
| 792 | * We are interested with this callback because we want to start media |
| 793 | * as soon as SDP negotiation is completed. |
| 794 | */ |
| 795 | static void call_on_media_update( pjsip_inv_session *inv, |
| 796 | pj_status_t status) |
| 797 | { |
| 798 | pjmedia_stream_info stream_info; |
| 799 | const pjmedia_sdp_session *local_sdp; |
| 800 | const pjmedia_sdp_session *remote_sdp; |
| 801 | pjmedia_port *media_port; |
| 802 | |
| 803 | if (status != PJ_SUCCESS) { |
| 804 | |
| 805 | app_perror(THIS_FILE, "SDP negotiation has failed", status); |
| 806 | |
| 807 | /* Here we should disconnect call if we're not in the middle |
| 808 | * of initializing an UAS dialog and if this is not a re-INVITE. |
| 809 | */ |
| 810 | return; |
| 811 | } |
| 812 | |
| 813 | /* Get local and remote SDP. |
| 814 | * We need both SDPs to create a media session. |
| 815 | */ |
| 816 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &local_sdp); |
| 817 | |
| 818 | status = pjmedia_sdp_neg_get_active_remote(inv->neg, &remote_sdp); |
| 819 | |
| 820 | |
| 821 | /* Create stream info based on the media audio SDP. */ |
| 822 | status = pjmedia_stream_info_from_sdp(&stream_info, inv->dlg->pool, |
| 823 | g_med_endpt, |
| 824 | local_sdp, remote_sdp, 0); |
| 825 | if (status != PJ_SUCCESS) { |
| 826 | app_perror(THIS_FILE,"Unable to create audio stream info",status); |
| 827 | return; |
| 828 | } |
| 829 | |
| 830 | /* If required, we can also change some settings in the stream info, |
| 831 | * (such as jitter buffer settings, codec settings, etc) before we |
| 832 | * create the stream. |
| 833 | */ |
| 834 | |
| 835 | /* Create new audio media stream, passing the stream info, and also the |
| 836 | * media socket that we created earlier. |
| 837 | */ |
| 838 | status = pjmedia_stream_create(g_med_endpt, inv->dlg->pool, &stream_info, |
| 839 | g_med_transport[0], NULL, &g_med_stream); |
| 840 | if (status != PJ_SUCCESS) { |
| 841 | app_perror( THIS_FILE, "Unable to create audio stream", status); |
| 842 | return; |
| 843 | } |
| 844 | |
| 845 | /* Start the audio stream */ |
| 846 | status = pjmedia_stream_start(g_med_stream); |
| 847 | if (status != PJ_SUCCESS) { |
| 848 | app_perror( THIS_FILE, "Unable to start audio stream", status); |
| 849 | return; |
| 850 | } |
| 851 | |
| 852 | /* Get the media port interface of the audio stream. |
| 853 | * Media port interface is basicly a struct containing get_frame() and |
| 854 | * put_frame() function. With this media port interface, we can attach |
| 855 | * the port interface to conference bridge, or directly to a sound |
| 856 | * player/recorder device. |
| 857 | */ |
| 858 | pjmedia_stream_get_port(g_med_stream, &media_port); |
| 859 | |
| 860 | /* Create sound port */ |
| 861 | pjmedia_snd_port_create(inv->pool, |
| 862 | PJMEDIA_AUD_DEFAULT_CAPTURE_DEV, |
| 863 | PJMEDIA_AUD_DEFAULT_PLAYBACK_DEV, |
| 864 | PJMEDIA_PIA_SRATE(&media_port->info),/* clock rate */ |
| 865 | PJMEDIA_PIA_CCNT(&media_port->info),/* channel count */ |
| 866 | PJMEDIA_PIA_SPF(&media_port->info), /* samples per frame*/ |
| 867 | PJMEDIA_PIA_BITS(&media_port->info),/* bits per sample */ |
| 868 | 0, |
| 869 | &g_snd_port); |
| 870 | |
| 871 | if (status != PJ_SUCCESS) { |
| 872 | app_perror( THIS_FILE, "Unable to create sound port", status); |
| 873 | PJ_LOG(3,(THIS_FILE, "%d %d %d %d", |
| 874 | PJMEDIA_PIA_SRATE(&media_port->info),/* clock rate */ |
| 875 | PJMEDIA_PIA_CCNT(&media_port->info),/* channel count */ |
| 876 | PJMEDIA_PIA_SPF(&media_port->info), /* samples per frame*/ |
| 877 | PJMEDIA_PIA_BITS(&media_port->info) /* bits per sample */ |
| 878 | )); |
| 879 | return; |
| 880 | } |
| 881 | |
| 882 | status = pjmedia_snd_port_connect(g_snd_port, media_port); |
| 883 | |
| 884 | |
| 885 | /* Get the media port interface of the second stream in the session, |
| 886 | * which is video stream. With this media port interface, we can attach |
| 887 | * the port directly to a renderer/capture video device. |
| 888 | */ |
| 889 | #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| 890 | if (local_sdp->media_count > 1) { |
| 891 | pjmedia_vid_stream_info vstream_info; |
| 892 | pjmedia_vid_port_param vport_param; |
| 893 | |
| 894 | pjmedia_vid_port_param_default(&vport_param); |
| 895 | |
| 896 | /* Create stream info based on the media video SDP. */ |
| 897 | status = pjmedia_vid_stream_info_from_sdp(&vstream_info, |
| 898 | inv->dlg->pool, g_med_endpt, |
| 899 | local_sdp, remote_sdp, 1); |
| 900 | if (status != PJ_SUCCESS) { |
| 901 | app_perror(THIS_FILE,"Unable to create video stream info",status); |
| 902 | return; |
| 903 | } |
| 904 | |
| 905 | /* If required, we can also change some settings in the stream info, |
| 906 | * (such as jitter buffer settings, codec settings, etc) before we |
| 907 | * create the video stream. |
| 908 | */ |
| 909 | |
| 910 | /* Create new video media stream, passing the stream info, and also the |
| 911 | * media socket that we created earlier. |
| 912 | */ |
| 913 | status = pjmedia_vid_stream_create(g_med_endpt, NULL, &vstream_info, |
| 914 | g_med_transport[1], NULL, |
| 915 | &g_med_vstream); |
| 916 | if (status != PJ_SUCCESS) { |
| 917 | app_perror( THIS_FILE, "Unable to create video stream", status); |
| 918 | return; |
| 919 | } |
| 920 | |
| 921 | /* Start the video stream */ |
| 922 | status = pjmedia_vid_stream_start(g_med_vstream); |
| 923 | if (status != PJ_SUCCESS) { |
| 924 | app_perror( THIS_FILE, "Unable to start video stream", status); |
| 925 | return; |
| 926 | } |
| 927 | |
| 928 | if (vstream_info.dir & PJMEDIA_DIR_DECODING) { |
| 929 | status = pjmedia_vid_dev_default_param( |
| 930 | inv->pool, PJMEDIA_VID_DEFAULT_RENDER_DEV, |
| 931 | &vport_param.vidparam); |
| 932 | if (status != PJ_SUCCESS) { |
| 933 | app_perror(THIS_FILE, "Unable to get default param of video " |
| 934 | "renderer device", status); |
| 935 | return; |
| 936 | } |
| 937 | |
| 938 | /* Get video stream port for decoding direction */ |
| 939 | pjmedia_vid_stream_get_port(g_med_vstream, PJMEDIA_DIR_DECODING, |
| 940 | &media_port); |
| 941 | |
| 942 | /* Set format */ |
| 943 | pjmedia_format_copy(&vport_param.vidparam.fmt, |
| 944 | &media_port->info.fmt); |
| 945 | vport_param.vidparam.dir = PJMEDIA_DIR_RENDER; |
| 946 | vport_param.active = PJ_TRUE; |
| 947 | |
| 948 | /* Create renderer */ |
| 949 | status = pjmedia_vid_port_create(inv->pool, &vport_param, |
| 950 | &g_vid_renderer); |
| 951 | if (status != PJ_SUCCESS) { |
| 952 | app_perror(THIS_FILE, "Unable to create video renderer device", |
| 953 | status); |
| 954 | return; |
| 955 | } |
| 956 | |
| 957 | /* Connect renderer to media_port */ |
| 958 | status = pjmedia_vid_port_connect(g_vid_renderer, media_port, |
| 959 | PJ_FALSE); |
| 960 | if (status != PJ_SUCCESS) { |
| 961 | app_perror(THIS_FILE, "Unable to connect renderer to stream", |
| 962 | status); |
| 963 | return; |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | /* Create capturer */ |
| 968 | if (vstream_info.dir & PJMEDIA_DIR_ENCODING) { |
| 969 | status = pjmedia_vid_dev_default_param( |
| 970 | inv->pool, PJMEDIA_VID_DEFAULT_CAPTURE_DEV, |
| 971 | &vport_param.vidparam); |
| 972 | if (status != PJ_SUCCESS) { |
| 973 | app_perror(THIS_FILE, "Unable to get default param of video " |
| 974 | "capture device", status); |
| 975 | return; |
| 976 | } |
| 977 | |
| 978 | /* Get video stream port for decoding direction */ |
| 979 | pjmedia_vid_stream_get_port(g_med_vstream, PJMEDIA_DIR_ENCODING, |
| 980 | &media_port); |
| 981 | |
| 982 | /* Get capturer format from stream info */ |
| 983 | pjmedia_format_copy(&vport_param.vidparam.fmt, |
| 984 | &media_port->info.fmt); |
| 985 | vport_param.vidparam.dir = PJMEDIA_DIR_CAPTURE; |
| 986 | vport_param.active = PJ_TRUE; |
| 987 | |
| 988 | /* Create capturer */ |
| 989 | status = pjmedia_vid_port_create(inv->pool, &vport_param, |
| 990 | &g_vid_capturer); |
| 991 | if (status != PJ_SUCCESS) { |
| 992 | app_perror(THIS_FILE, "Unable to create video capture device", |
| 993 | status); |
| 994 | return; |
| 995 | } |
| 996 | |
| 997 | /* Connect capturer to media_port */ |
| 998 | status = pjmedia_vid_port_connect(g_vid_capturer, media_port, |
| 999 | PJ_FALSE); |
| 1000 | if (status != PJ_SUCCESS) { |
| 1001 | app_perror(THIS_FILE, "Unable to connect capturer to stream", |
| 1002 | status); |
| 1003 | return; |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | /* Start streaming */ |
| 1008 | if (g_vid_renderer) { |
| 1009 | status = pjmedia_vid_port_start(g_vid_renderer); |
| 1010 | if (status != PJ_SUCCESS) { |
| 1011 | app_perror(THIS_FILE, "Unable to start video renderer", |
| 1012 | status); |
| 1013 | return; |
| 1014 | } |
| 1015 | } |
| 1016 | if (g_vid_capturer) { |
| 1017 | status = pjmedia_vid_port_start(g_vid_capturer); |
| 1018 | if (status != PJ_SUCCESS) { |
| 1019 | app_perror(THIS_FILE, "Unable to start video capturer", |
| 1020 | status); |
| 1021 | return; |
| 1022 | } |
| 1023 | } |
| 1024 | } |
| 1025 | #endif /* PJMEDIA_HAS_VIDEO */ |
| 1026 | |
| 1027 | /* Done with media. */ |
| 1028 | } |
| 1029 | |
| 1030 | |