Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 19 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 20 | |
| 21 | /** |
| 22 | * simpleua.c |
| 23 | * |
| 24 | * This is a very simple SIP user agent complete with media. The user |
| 25 | * agent should do a proper SDP negotiation and start RTP media once |
| 26 | * SDP negotiation has completed. |
| 27 | * |
| 28 | * This program does not register to SIP server. |
| 29 | * |
| 30 | * Capabilities to be demonstrated here: |
| 31 | * - Basic call |
| 32 | * - UDP transport at port 5060 (hard coded) |
| 33 | * - RTP socket at port 4000 (hard coded) |
| 34 | * - proper SDP negotiation |
| 35 | * - PCMA/PCMU codec only. |
| 36 | * - Audio/media to sound device. |
| 37 | * |
| 38 | * |
| 39 | * Usage: |
| 40 | * - To make outgoing call, start simpleua with the URL of remote |
| 41 | * destination to contact. |
| 42 | * E.g.: |
| 43 | * simpleua sip:user@remote |
| 44 | * |
| 45 | * - Incoming calls will automatically be answered with 180, then 200. |
| 46 | * |
| 47 | * This program does not disconnect call. |
| 48 | * |
| 49 | * This program will quit once it has completed a single call. |
| 50 | */ |
| 51 | |
| 52 | /* Include all headers. */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 53 | #include <pjsip.h> |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 54 | #include <pjmedia.h> |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 55 | #include <pjmedia-codec.h> |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 56 | #include <pjsip_ua.h> |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 57 | #include <pjsip_simple.h> |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 58 | #include <pjlib-util.h> |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 59 | #include <pjlib.h> |
| 60 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 61 | /* For logging purpose. */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 62 | #define THIS_FILE "simpleua.c" |
| 63 | |
| 64 | |
| 65 | /* |
| 66 | * Static variables. |
| 67 | */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 68 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 69 | static pj_bool_t g_complete; /* Quit flag. */ |
| 70 | static pjsip_endpoint *g_endpt; /* SIP endpoint. */ |
| 71 | static pj_caching_pool cp; /* Global pool factory. */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 72 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 73 | static pjmedia_endpt *g_med_endpt; /* Media endpoint. */ |
| 74 | static pjmedia_sock_info g_med_skinfo; /* Socket info for media */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 75 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 76 | /* Call variables: */ |
| 77 | static pjsip_inv_session *g_inv; /* Current invite session. */ |
| 78 | static pjmedia_session *g_med_session; /* Call's media session. */ |
| 79 | static pjmedia_snd_port *g_snd_player; /* Call's sound player */ |
| 80 | static pjmedia_snd_port *g_snd_rec; /* Call's sound recorder. */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 81 | |
| 82 | |
| 83 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 84 | * Prototypes: |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 85 | */ |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 86 | |
| 87 | /* Callback to be called when SDP negotiation is done in the call: */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 88 | static void call_on_media_update( pjsip_inv_session *inv, |
| 89 | pj_status_t status); |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 90 | |
| 91 | /* Callback to be called when invite session's state has changed: */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 92 | static void call_on_state_changed( pjsip_inv_session *inv, |
| 93 | pjsip_event *e); |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 94 | |
| 95 | /* Callback to be called when dialog has forked: */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 96 | static void call_on_forked(pjsip_inv_session *inv, pjsip_event *e); |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 97 | |
| 98 | /* Callback to be called to handle incoming requests outside dialogs: */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 99 | static pj_bool_t on_rx_request( pjsip_rx_data *rdata ); |
| 100 | |
| 101 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 102 | |
| 103 | |
| 104 | /* This is a PJSIP module to be registered by application to handle |
| 105 | * incoming requests outside any dialogs/transactions. The main purpose |
| 106 | * here is to handle incoming INVITE request message, where we will |
| 107 | * create a dialog and INVITE session for it. |
| 108 | */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 109 | static pjsip_module mod_simpleua = |
| 110 | { |
| 111 | NULL, NULL, /* prev, next. */ |
| 112 | { "mod-simpleua", 12 }, /* Name. */ |
| 113 | -1, /* Id */ |
| 114 | PJSIP_MOD_PRIORITY_APPLICATION, /* Priority */ |
| 115 | NULL, /* load() */ |
| 116 | NULL, /* start() */ |
| 117 | NULL, /* stop() */ |
| 118 | NULL, /* unload() */ |
| 119 | &on_rx_request, /* on_rx_request() */ |
| 120 | NULL, /* on_rx_response() */ |
| 121 | NULL, /* on_tx_request. */ |
| 122 | NULL, /* on_tx_response() */ |
| 123 | NULL, /* on_tsx_state() */ |
| 124 | }; |
| 125 | |
| 126 | |
| 127 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 128 | * Util to display the error message for the specified error code |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 129 | */ |
| 130 | static int app_perror( const char *sender, const char *title, |
| 131 | pj_status_t status) |
| 132 | { |
| 133 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 134 | |
| 135 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 136 | |
| 137 | PJ_LOG(1,(sender, "%s: %s [code=%d]", title, errmsg, status)); |
| 138 | return 1; |
| 139 | } |
| 140 | |
| 141 | |
| 142 | /* |
| 143 | * main() |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 144 | * |
| 145 | * If called with argument, treat argument as SIP URL to be called. |
| 146 | * Otherwise wait for incoming calls. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 147 | */ |
| 148 | int main(int argc, char *argv[]) |
| 149 | { |
| 150 | pj_status_t status; |
| 151 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 152 | /* Must init PJLIB first: */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 153 | status = pj_init(); |
| 154 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 155 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 156 | |
| 157 | /* Then init PJLIB-UTIL: */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 158 | status = pjlib_util_init(); |
| 159 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 160 | |
| 161 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 162 | /* Must create a pool factory before we can allocate any memory. */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 163 | pj_caching_pool_init(&cp, &pj_pool_factory_default_policy, 0); |
| 164 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 165 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 166 | /* Create global endpoint: */ |
| 167 | { |
| 168 | const pj_str_t *hostname; |
| 169 | const char *endpt_name; |
| 170 | |
| 171 | /* Endpoint MUST be assigned a globally unique name. |
| 172 | * The name will be used as the hostname in Warning header. |
| 173 | */ |
| 174 | |
| 175 | /* For this implementation, we'll use hostname for simplicity */ |
| 176 | hostname = pj_gethostname(); |
| 177 | endpt_name = hostname->ptr; |
| 178 | |
| 179 | /* Create the endpoint: */ |
| 180 | |
| 181 | status = pjsip_endpt_create(&cp.factory, endpt_name, |
| 182 | &g_endpt); |
| 183 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 184 | } |
| 185 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 186 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 187 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 188 | * Add UDP transport, with hard-coded port |
| 189 | * Alternatively, application can use pjsip_udp_transport_attach() to |
| 190 | * start UDP transport, if it already has an UDP socket (e.g. after it |
| 191 | * resolves the address with STUN). |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 192 | */ |
| 193 | { |
| 194 | pj_sockaddr_in addr; |
| 195 | |
| 196 | addr.sin_family = PJ_AF_INET; |
| 197 | addr.sin_addr.s_addr = 0; |
| 198 | addr.sin_port = pj_htons(5060); |
| 199 | |
| 200 | status = pjsip_udp_transport_start( g_endpt, &addr, NULL, 1, NULL); |
| 201 | if (status != PJ_SUCCESS) { |
| 202 | app_perror(THIS_FILE, "Unable to start UDP transport", status); |
| 203 | return 1; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | |
| 208 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 209 | * Init transaction layer. |
| 210 | * This will create/initialize transaction hash tables etc. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 211 | */ |
| 212 | status = pjsip_tsx_layer_init_module(g_endpt); |
| 213 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 214 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 215 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 216 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 217 | * Initialize UA layer module. |
| 218 | * This will create/initialize dialog hash tables etc. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 219 | */ |
| 220 | status = pjsip_ua_init_module( g_endpt, NULL ); |
| 221 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 222 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 223 | |
| 224 | /* |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 225 | * Init invite session module. |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 226 | * The invite session module initialization takes additional argument, |
| 227 | * i.e. a structure containing callbacks to be called on specific |
| 228 | * occurence of events. |
| 229 | * |
| 230 | * The on_state_changed and on_new_session callbacks are mandatory. |
| 231 | * Application must supply the callback function. |
| 232 | * |
| 233 | * We use on_media_update() callback in this application to start |
| 234 | * media transmission. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 235 | */ |
| 236 | { |
| 237 | pjsip_inv_callback inv_cb; |
| 238 | |
| 239 | /* Init the callback for INVITE session: */ |
| 240 | pj_memset(&inv_cb, 0, sizeof(inv_cb)); |
| 241 | inv_cb.on_state_changed = &call_on_state_changed; |
| 242 | inv_cb.on_new_session = &call_on_forked; |
| 243 | inv_cb.on_media_update = &call_on_media_update; |
| 244 | |
| 245 | /* Initialize invite session module: */ |
| 246 | status = pjsip_inv_usage_init(g_endpt, &inv_cb); |
| 247 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 248 | } |
| 249 | |
| 250 | |
| 251 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 252 | * Register our module to receive incoming requests. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 253 | */ |
| 254 | status = pjsip_endpt_register_module( g_endpt, &mod_simpleua); |
| 255 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 256 | |
| 257 | |
| 258 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 259 | * Initialize media endpoint. |
| 260 | * This will implicitly initialize PJMEDIA too. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 261 | */ |
| 262 | status = pjmedia_endpt_create(&cp.factory, &g_med_endpt); |
| 263 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 264 | |
| 265 | /* |
| 266 | * Add PCMA/PCMU codec to the media endpoint. |
| 267 | */ |
| 268 | status = pjmedia_codec_g711_init(g_med_endpt); |
| 269 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 270 | |
| 271 | /* |
| 272 | * Initialize RTP socket info for the media. |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 273 | * The RTP socket is hard-codec to port 4000. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 274 | */ |
| 275 | status = pj_sock_socket(PJ_AF_INET, PJ_SOCK_DGRAM, 0, &g_med_skinfo.rtp_sock); |
| 276 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 277 | |
| 278 | pj_sockaddr_in_init( &g_med_skinfo.rtp_addr_name, |
| 279 | pjsip_endpt_name(g_endpt), 4000); |
| 280 | |
| 281 | status = pj_sock_bind(g_med_skinfo.rtp_sock, &g_med_skinfo.rtp_addr_name, |
| 282 | sizeof(pj_sockaddr_in)); |
| 283 | if (status != PJ_SUCCESS) { |
| 284 | app_perror( THIS_FILE, |
| 285 | "Unable to bind RTP socket", |
| 286 | status); |
| 287 | return 1; |
| 288 | } |
| 289 | |
| 290 | |
| 291 | /* For simplicity, ignore RTCP socket. */ |
| 292 | g_med_skinfo.rtcp_sock = PJ_INVALID_SOCKET; |
| 293 | g_med_skinfo.rtcp_addr_name = g_med_skinfo.rtp_addr_name; |
| 294 | |
| 295 | |
| 296 | /* |
| 297 | * If URL is specified, then make call immediately. |
| 298 | */ |
| 299 | if (argc > 1) { |
| 300 | char temp[80]; |
| 301 | pj_str_t dst_uri = pj_str(argv[1]); |
| 302 | pj_str_t local_uri; |
| 303 | pjsip_dialog *dlg; |
| 304 | pjmedia_sdp_session *local_sdp; |
| 305 | pjsip_tx_data *tdata; |
| 306 | |
| 307 | pj_ansi_sprintf(temp, "sip:simpleuac@%s", pjsip_endpt_name(g_endpt)->ptr); |
| 308 | local_uri = pj_str(temp); |
| 309 | |
| 310 | /* Create UAC dialog */ |
| 311 | status = pjsip_dlg_create_uac( pjsip_ua_instance(), |
| 312 | &local_uri, /* local URI */ |
| 313 | NULL, /* local Contact */ |
| 314 | &dst_uri, /* remote URI */ |
| 315 | &dst_uri, /* remote target */ |
| 316 | &dlg); /* dialog */ |
| 317 | if (status != PJ_SUCCESS) { |
| 318 | app_perror(THIS_FILE, "Unable to create UAC dialog", status); |
| 319 | return 1; |
| 320 | } |
| 321 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 322 | /* Get the SDP body to be put in the outgoing INVITE, by asking |
| 323 | * media endpoint to create one for us. The SDP will contain all |
| 324 | * codecs that have been registered to it (in this case, only |
| 325 | * PCMA and PCMU), plus telephony event. |
| 326 | */ |
| 327 | status = pjmedia_endpt_create_sdp( g_med_endpt, /* the media endpt */ |
| 328 | dlg->pool, /* pool. */ |
| 329 | 1, /* # of streams */ |
| 330 | &g_med_skinfo, /* RTP sock info */ |
| 331 | &local_sdp); /* the SDP result */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 332 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 333 | |
| 334 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 335 | |
| 336 | /* Create the INVITE session, and pass the SDP returned earlier |
| 337 | * as the session's initial capability. |
| 338 | */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 339 | status = pjsip_inv_create_uac( dlg, local_sdp, 0, &g_inv); |
| 340 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 341 | |
| 342 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 343 | |
| 344 | /* Create initial INVITE request. |
| 345 | * This INVITE request will contain a perfectly good request and |
| 346 | * an SDP body as well. |
| 347 | */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 348 | status = pjsip_inv_invite(g_inv, &tdata); |
| 349 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 350 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 351 | |
| 352 | |
| 353 | /* Send initial INVITE request. |
| 354 | * From now on, the invite session's state will be reported to us |
| 355 | * via the invite session callbacks. |
| 356 | */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 357 | status = pjsip_inv_send_msg(g_inv, tdata); |
| 358 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, 1); |
| 359 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 360 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 361 | } else { |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 362 | |
| 363 | /* No URL to make call to */ |
| 364 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 365 | PJ_LOG(3,(THIS_FILE, "Ready to accept incoming calls...")); |
| 366 | } |
| 367 | |
| 368 | |
| 369 | /* Loop until one call is completed */ |
| 370 | for (;!g_complete;) { |
| 371 | pj_time_val timeout = {0, 10}; |
| 372 | pjsip_endpt_handle_events(g_endpt, &timeout); |
| 373 | } |
| 374 | |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | |
| 379 | |
| 380 | /* |
| 381 | * Callback when INVITE session state has changed. |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 382 | * This callback is registered when the invite session module is initialized. |
| 383 | * We mostly want to know when the invite session has been disconnected, |
| 384 | * so that we can quit the application. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 385 | */ |
| 386 | static void call_on_state_changed( pjsip_inv_session *inv, |
| 387 | pjsip_event *e) |
| 388 | { |
| 389 | if (inv->state == PJSIP_INV_STATE_DISCONNECTED) { |
| 390 | |
| 391 | PJ_LOG(3,(THIS_FILE, "Call DISCONNECTED [reason=%d (%s)]", |
| 392 | inv->cause, |
| 393 | pjsip_get_status_text(inv->cause)->ptr)); |
| 394 | |
| 395 | PJ_LOG(3,(THIS_FILE, "One call completed, application quitting...")); |
| 396 | g_complete = 1; |
| 397 | |
| 398 | } else { |
| 399 | |
| 400 | PJ_LOG(3,(THIS_FILE, "Call state changed to %s", |
| 401 | pjsip_inv_state_name(inv->state))); |
| 402 | |
| 403 | } |
| 404 | } |
| 405 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 406 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 407 | /* This callback is called when dialog has forked. */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 408 | static void call_on_forked(pjsip_inv_session *inv, pjsip_event *e) |
| 409 | { |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 410 | /* To be done... */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 411 | } |
| 412 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 413 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 414 | /* |
| 415 | * Callback when incoming requests outside any transactions and any |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 416 | * dialogs are received. We're only interested to hande incoming INVITE |
| 417 | * request, and we'll reject any other requests with 500 response. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 418 | */ |
| 419 | static pj_bool_t on_rx_request( pjsip_rx_data *rdata ) |
| 420 | { |
| 421 | pjsip_dialog *dlg; |
| 422 | pjmedia_sdp_session *local_sdp; |
| 423 | pjsip_tx_data *tdata; |
| 424 | unsigned options = 0; |
| 425 | pj_status_t status; |
| 426 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 427 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 428 | /* |
| 429 | * Respond (statelessly) any non-INVITE requests with 500 |
| 430 | */ |
| 431 | if (rdata->msg_info.msg->line.req.method.id != PJSIP_INVITE_METHOD) { |
| 432 | |
| 433 | pj_str_t reason = pj_str("Simple UA unable to handle this request"); |
| 434 | |
| 435 | pjsip_endpt_respond_stateless( g_endpt, rdata, |
| 436 | 500, &reason, |
| 437 | NULL, NULL); |
| 438 | return PJ_TRUE; |
| 439 | } |
| 440 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 441 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 442 | /* |
| 443 | * Reject INVITE if we already have an INVITE session in progress. |
| 444 | */ |
| 445 | if (g_inv) { |
| 446 | |
| 447 | pj_str_t reason = pj_str("Another call is in progress"); |
| 448 | |
| 449 | pjsip_endpt_respond_stateless( g_endpt, rdata, |
| 450 | 500, &reason, |
| 451 | NULL, NULL); |
| 452 | return PJ_TRUE; |
| 453 | |
| 454 | } |
| 455 | |
| 456 | /* Verify that we can handle the request. */ |
| 457 | status = pjsip_inv_verify_request(rdata, &options, NULL, NULL, |
| 458 | g_endpt, NULL); |
| 459 | if (status != PJ_SUCCESS) { |
| 460 | |
| 461 | pj_str_t reason = pj_str("Sorry Simple UA can not handle this INVITE"); |
| 462 | |
| 463 | pjsip_endpt_respond_stateless( g_endpt, rdata, |
| 464 | 500, &reason, |
| 465 | NULL, NULL); |
| 466 | return PJ_TRUE; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * Create UAS dialog. |
| 471 | */ |
| 472 | status = pjsip_dlg_create_uas( pjsip_ua_instance(), |
| 473 | rdata, |
| 474 | NULL, /* contact */ |
| 475 | &dlg); |
| 476 | if (status != PJ_SUCCESS) { |
| 477 | pjsip_endpt_respond_stateless(g_endpt, rdata, 500, NULL, |
| 478 | NULL, NULL); |
| 479 | return PJ_TRUE; |
| 480 | } |
| 481 | |
| 482 | /* |
| 483 | * Get media capability from media endpoint: |
| 484 | */ |
| 485 | |
| 486 | status = pjmedia_endpt_create_sdp( g_med_endpt, rdata->tp_info.pool, 1, |
| 487 | &g_med_skinfo, |
| 488 | &local_sdp); |
| 489 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 490 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 491 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 492 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 493 | * Create invite session, and pass both the UAS dialog and the SDP |
| 494 | * capability to the session. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 495 | */ |
| 496 | status = pjsip_inv_create_uas( dlg, rdata, local_sdp, 0, &g_inv); |
| 497 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 498 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 499 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 500 | /* |
| 501 | * Initially send 180 response. |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 502 | * |
| 503 | * The very first response to an INVITE must be created with |
| 504 | * pjsip_inv_initial_answer(). Subsequent responses to the same |
| 505 | * transaction MUST use pjsip_inv_answer(). |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 506 | */ |
| 507 | status = pjsip_inv_initial_answer(g_inv, rdata, |
| 508 | 180, |
| 509 | NULL, NULL, &tdata); |
| 510 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 511 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 512 | |
| 513 | /* Send the 180 response. */ |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 514 | status = pjsip_inv_send_msg(g_inv, tdata); |
| 515 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 516 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 517 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 518 | /* |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 519 | * Now create 200 response. |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 520 | */ |
| 521 | status = pjsip_inv_answer( g_inv, |
| 522 | 200, NULL, /* st_code and st_text */ |
| 523 | NULL, /* SDP already specified */ |
| 524 | &tdata); |
| 525 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 526 | |
| 527 | /* |
| 528 | * Send the 200 response. |
| 529 | */ |
| 530 | status = pjsip_inv_send_msg(g_inv, tdata); |
| 531 | PJ_ASSERT_RETURN(status == PJ_SUCCESS, PJ_TRUE); |
| 532 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 533 | |
| 534 | /* Done. |
| 535 | * When the call is disconnected, it will be reported via the callback. |
| 536 | */ |
| 537 | |
Benny Prijono | 6107a00 | 2006-03-17 18:01:27 +0000 | [diff] [blame] | 538 | return PJ_TRUE; |
| 539 | } |
| 540 | |
| 541 | |
Benny Prijono | 53fde13 | 2006-03-17 19:41:19 +0000 | [diff] [blame^] | 542 | |
| 543 | /* |
| 544 | * Callback when SDP negotiation has completed. |
| 545 | * We are interested with this callback because we want to start media |
| 546 | * as soon as SDP negotiation is completed. |
| 547 | */ |
| 548 | static void call_on_media_update( pjsip_inv_session *inv, |
| 549 | pj_status_t status) |
| 550 | { |
| 551 | const pjmedia_sdp_session *local_sdp; |
| 552 | const pjmedia_sdp_session *remote_sdp; |
| 553 | pjmedia_port *media_port; |
| 554 | |
| 555 | if (status != PJ_SUCCESS) { |
| 556 | |
| 557 | app_perror(THIS_FILE, "SDP negotiation has failed", status); |
| 558 | |
| 559 | /* Here we should disconnect call if we're not in the middle |
| 560 | * of initializing an UAS dialog and if this is not a re-INVITE. |
| 561 | */ |
| 562 | return; |
| 563 | } |
| 564 | |
| 565 | /* Get local and remote SDP. |
| 566 | * We need both SDPs to create a media session. |
| 567 | */ |
| 568 | status = pjmedia_sdp_neg_get_active_local(inv->neg, &local_sdp); |
| 569 | |
| 570 | status = pjmedia_sdp_neg_get_active_remote(inv->neg, &remote_sdp); |
| 571 | |
| 572 | |
| 573 | /* Create new media session, passing the two SDPs, and also the |
| 574 | * media socket that we created earlier. |
| 575 | * The media session is active immediately. |
| 576 | */ |
| 577 | status = pjmedia_session_create( g_med_endpt, 1, |
| 578 | &g_med_skinfo, |
| 579 | local_sdp, remote_sdp, |
| 580 | NULL, &g_med_session ); |
| 581 | if (status != PJ_SUCCESS) { |
| 582 | app_perror( THIS_FILE, "Unable to create media session", status); |
| 583 | return; |
| 584 | } |
| 585 | |
| 586 | |
| 587 | /* Get the media port interface of the first stream in the session. |
| 588 | * Media port interface is basicly a struct containing get_frame() and |
| 589 | * put_frame() function. With this media port interface, we can attach |
| 590 | * the port interface to conference bridge, or directly to a sound |
| 591 | * player/recorder device. |
| 592 | */ |
| 593 | pjmedia_session_get_port(g_med_session, 0, &media_port); |
| 594 | |
| 595 | |
| 596 | |
| 597 | /* Create a sound Player device and connect the media port to the |
| 598 | * sound device. |
| 599 | */ |
| 600 | status = pjmedia_snd_port_create_player( |
| 601 | inv->pool, /* pool */ |
| 602 | -1, /* sound dev id */ |
| 603 | media_port->info.sample_rate, /* clock rate */ |
| 604 | media_port->info.channel_count, /* channel count */ |
| 605 | media_port->info.samples_per_frame, /* samples per frame*/ |
| 606 | media_port->info.bits_per_sample, /* bits per sample */ |
| 607 | 0, /* options */ |
| 608 | &g_snd_player); |
| 609 | if (status != PJ_SUCCESS) { |
| 610 | app_perror( THIS_FILE, "Unable to create sound player", status); |
| 611 | PJ_LOG(3,(THIS_FILE, "%d %d %d %d", |
| 612 | media_port->info.sample_rate, /* clock rate */ |
| 613 | media_port->info.channel_count, /* channel count */ |
| 614 | media_port->info.samples_per_frame, /* samples per frame*/ |
| 615 | media_port->info.bits_per_sample /* bits per sample */ |
| 616 | )); |
| 617 | return; |
| 618 | } |
| 619 | |
| 620 | status = pjmedia_snd_port_connect(g_snd_player, media_port); |
| 621 | |
| 622 | |
| 623 | /* Create a sound recorder device and connect the media port to the |
| 624 | * sound device. |
| 625 | */ |
| 626 | status = pjmedia_snd_port_create_rec( |
| 627 | inv->pool, /* pool */ |
| 628 | -1, /* sound dev id */ |
| 629 | media_port->info.sample_rate, /* clock rate */ |
| 630 | media_port->info.channel_count, /* channel count */ |
| 631 | media_port->info.samples_per_frame, /* samples per frame*/ |
| 632 | media_port->info.bits_per_sample, /* bits per sample */ |
| 633 | 0, /* options */ |
| 634 | &g_snd_rec); |
| 635 | if (status != PJ_SUCCESS) { |
| 636 | app_perror( THIS_FILE, "Unable to create sound recorder", status); |
| 637 | return; |
| 638 | } |
| 639 | |
| 640 | status = pjmedia_snd_port_connect(g_snd_rec, media_port); |
| 641 | |
| 642 | /* Done with media. */ |
| 643 | } |
| 644 | |
| 645 | |