pjsip-apps/src/pjsua/pjsua_app.c

/* $Id$ */
/* 
 * Copyright (C) 2003-2007 Benny Prijono <benny@prijono.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 */
#include <pjsua-lib/pjsua.h>


#define THIS_FILE	"pjsua.c"
#define NO_LIMIT	(int)0x7FFFFFFF

//#define STEREO_DEMO

/* Call specific data */
struct call_data
{
    pj_timer_entry	    timer;
};


/* Pjsua application data */
static struct app_config
{
    pjsua_config	    cfg;
    pjsua_logging_config    log_cfg;
    pjsua_media_config	    media_cfg;
    pj_bool_t		    no_refersub;
    pj_bool_t		    no_tcp;
    pj_bool_t		    no_udp;
    pj_bool_t		    use_tls;
    pjsua_transport_config  udp_cfg;
    pjsua_transport_config  rtp_cfg;

    unsigned		    acc_cnt;
    pjsua_acc_config	    acc_cfg[PJSUA_MAX_ACC];

    unsigned		    buddy_cnt;
    pjsua_buddy_config	    buddy_cfg[PJSUA_MAX_BUDDIES];

    struct call_data	    call_data[PJSUA_MAX_CALLS];

    pj_pool_t		   *pool;
    /* Compatibility with older pjsua */

    unsigned		    codec_cnt;
    pj_str_t		    codec_arg[32];
    pj_bool_t		    null_audio;
    unsigned		    wav_count;
    pj_str_t		    wav_files[32];
    unsigned		    tone_count;
    pjmedia_tone_desc	    tones[32];
    pjsua_conf_port_id	    tone_slots[32];
    pjsua_player_id	    wav_id;
    pjsua_conf_port_id	    wav_port;
    pj_bool_t		    auto_play;
    pj_bool_t		    auto_loop;
    pj_bool_t		    auto_conf;
    pj_str_t		    rec_file;
    pj_bool_t		    auto_rec;
    pjsua_recorder_id	    rec_id;
    pjsua_conf_port_id	    rec_port;
    unsigned		    auto_answer;
    unsigned		    duration;

#ifdef STEREO_DEMO
    pjmedia_snd_port	   *snd;
#endif

    float		    mic_level,
			    speaker_level;

    int			    capture_dev, playback_dev;
} app_config;


//static pjsua_acc_id	current_acc;
#define current_acc	pjsua_acc_get_default()
static pjsua_call_id	current_call = PJSUA_INVALID_ID;
static pj_str_t		uri_arg;

#ifdef STEREO_DEMO
static void stereo_demo();
#endif
pj_status_t app_destroy(void);

/*****************************************************************************
 * Configuration manipulation
 */

/* Show usage */
static void usage(void)
{
    puts  ("Usage:");
    puts  ("  pjsua [options] [SIP URL to call]");
    puts  ("");
    puts  ("General options:");
    puts  ("  --config-file=file  Read the config/arguments from file.");
    puts  ("  --help              Display this help screen");
    puts  ("  --version           Display version info");
    puts  ("");
    puts  ("Logging options:");
    puts  ("  --log-file=fname    Log to filename (default stderr)");
    puts  ("  --log-level=N       Set log max level to N (0(none) to 6(trace)) (default=5)");
    puts  ("  --app-log-level=N   Set log max level for stdout display (default=4)");
    puts  ("");
    puts  ("SIP Account options:");
    puts  ("  --registrar=url     Set the URL of registrar server");
    puts  ("  --id=url            Set the URL of local ID (used in From header)");
    puts  ("  --contact=url       Optionally override the Contact information");
    puts  ("  --proxy=url         Optional URL of proxy server to visit");
    puts  ("                      May be specified multiple times");
    puts  ("  --reg-timeout=SEC   Optional registration interval (default 55)");
    puts  ("  --realm=string      Set realm");
    puts  ("  --username=string   Set authentication username");
    puts  ("  --password=string   Set authentication password");
    puts  ("  --publish           Send presence PUBLISH for this account");
    puts  ("  --use-100rel        Require reliable provisional response (100rel)");
    puts  ("  --next-cred         Add another credentials");
    puts  ("");
    puts  ("SIP Account Control:");
    puts  ("  --next-account      Add more account");
    puts  ("");
    puts  ("Transport Options:");
    puts  ("  --local-port=port   Set TCP/UDP port. This implicitly enables both ");
    puts  ("                      TCP and UDP transports on the specified port, unless");
    puts  ("                      if TCP or UDP is disabled.");
    puts  ("  --ip-addr=IP        Use the specifed address as SIP and RTP addresses.");
    puts  ("                      (Hint: the IP may be the public IP of the NAT/router)");
    puts  ("  --no-tcp            Disable TCP transport.");
    puts  ("  --no-udp            Disable UDP transport.");
    puts  ("  --nameserver=NS     Add the specified nameserver to enable SRV resolution");
    puts  ("                      This option can be specified multiple times.");
    puts  ("  --outbound=url      Set the URL of global outbound proxy server");
    puts  ("                      May be specified multiple times");
    puts  ("  --stun-srv=name     Set STUN server host or domain");
    puts  ("");
    puts  ("TLS Options:");
    puts  ("  --use-tls           Enable TLS transport (default=no)");
    puts  ("  --tls-ca-file       Specify TLS CA file (default=none)");
    puts  ("  --tls-cert-file     Specify TLS certificate file (default=none)");
    puts  ("  --tls-privkey-file  Specify TLS private key file (default=none)");
    puts  ("  --tls-password      Specify TLS password to private key file (default=none)");
    puts  ("  --tls-verify-server Verify server's certificate (default=no)");
    puts  ("  --tls-verify-client Verify client's certificate (default=no)");
    puts  ("  --tls-neg-timeout   Specify TLS negotiation timeout (default=no)");

    puts  ("");
    puts  ("Media Options:");
    puts  ("  --use-ice           Enable ICE (default:no)");
    puts  ("  --add-codec=name    Manually add codec (default is to enable all)");
    puts  ("  --clock-rate=N      Override sound device clock rate");
    puts  ("  --null-audio        Use NULL audio device");
    puts  ("  --play-file=file    Register WAV file in conference bridge.");
    puts  ("                      This can be specified multiple times.");
    puts  ("  --play-tone=FORMAT  Register tone to the conference bridge.");
    puts  ("                      FORMAT is 'F1,F2,ON,OFF', where F1,F2 are");
    puts  ("                      frequencies, and ON,OFF=on/off duration in msec.");
    puts  ("                      This can be specified multiple times.");
    puts  ("  --auto-play         Automatically play the file (to incoming calls only)");
    puts  ("  --auto-loop         Automatically loop incoming RTP to outgoing RTP");
    puts  ("  --auto-conf         Automatically put calls in conference with others");
    puts  ("  --rec-file=file     Open file recorder (extension can be .wav or .mp3");
    puts  ("  --auto-rec          Automatically record conversation");
    puts  ("  --rtp-port=N        Base port to try for RTP (default=4000)");
    puts  ("  --quality=N         Specify media quality (0-10, default=6)");
    puts  ("  --ptime=MSEC        Override codec ptime to MSEC (default=specific)");
    puts  ("  --no-vad            Disable VAD/silence detector (default=vad enabled)");
    puts  ("  --ec-tail=MSEC      Set echo canceller tail length (default=256)");
    puts  ("  --ilbc-mode=MODE    Set iLBC codec mode (20 or 30, default is 20)");
    puts  ("  --rx-drop-pct=PCT   Drop PCT percent of RX RTP (for pkt lost sim, default: 0)");
    puts  ("  --tx-drop-pct=PCT   Drop PCT percent of TX RTP (for pkt lost sim, default: 0)");
    puts  ("  --capture-dev=id    Audio capture device ID (default=-1)");
    puts  ("  --playback-dev=id   Audio playback device ID (default=-1)");


    puts  ("");
    puts  ("Buddy List (can be more than one):");
    puts  ("  --add-buddy url     Add the specified URL to the buddy list.");
    puts  ("");
    puts  ("User Agent options:");
    puts  ("  --auto-answer=code  Automatically answer incoming calls with code (e.g. 200)");
    puts  ("  --max-calls=N       Maximum number of concurrent calls (default:4, max:255)");
    puts  ("  --thread-cnt=N      Number of worker threads (default:1)");
    puts  ("  --duration=SEC      Set maximum call duration (default:no limit)");
    puts  ("  --norefersub        Suppress event subscription when transfering calls");

    puts  ("");
    puts  ("When URL is specified, pjsua will immediately initiate call to that URL");
    puts  ("");

    fflush(stdout);
}


/* Set default config. */
static void default_config(struct app_config *cfg)
{
    char tmp[80];
    unsigned i;

    pjsua_config_default(&cfg->cfg);
    pj_ansi_sprintf(tmp, "PJSUA v%s/%s", pj_get_version(), PJ_OS_NAME);
    pj_strdup2_with_null(app_config.pool, &cfg->cfg.user_agent, tmp);

    pjsua_logging_config_default(&cfg->log_cfg);
    pjsua_media_config_default(&cfg->media_cfg);
    pjsua_transport_config_default(&cfg->udp_cfg);
    cfg->udp_cfg.port = 5060;
    pjsua_transport_config_default(&cfg->rtp_cfg);
    cfg->rtp_cfg.port = 4000;
    cfg->duration = NO_LIMIT;
    cfg->wav_id = PJSUA_INVALID_ID;
    cfg->rec_id = PJSUA_INVALID_ID;
    cfg->wav_port = PJSUA_INVALID_ID;
    cfg->rec_port = PJSUA_INVALID_ID;
    cfg->mic_level = cfg->speaker_level = 1.0;
    cfg->capture_dev = PJSUA_INVALID_ID;
    cfg->playback_dev = PJSUA_INVALID_ID;

    for (i=0; i<PJ_ARRAY_SIZE(cfg->acc_cfg); ++i)
	pjsua_acc_config_default(&cfg->acc_cfg[i]);

    for (i=0; i<PJ_ARRAY_SIZE(cfg->buddy_cfg); ++i)
	pjsua_buddy_config_default(&cfg->buddy_cfg[i]);
}


/*
 * Read command arguments from config file.
 */
static int read_config_file(pj_pool_t *pool, const char *filename, 
			    int *app_argc, char ***app_argv)
{
    int i;
    FILE *fhnd;
    char line[200];
    int argc = 0;
    char **argv;
    enum { MAX_ARGS = 64 };

    /* Allocate MAX_ARGS+1 (argv needs to be terminated with NULL argument) */
    argv = pj_pool_calloc(pool, MAX_ARGS+1, sizeof(char*));
    argv[argc++] = *app_argv[0];

    /* Open config file. */
    fhnd = fopen(filename, "rt");
    if (!fhnd) {
	PJ_LOG(1,(THIS_FILE, "Unable to open config file %s", filename));
	fflush(stdout);
	return -1;
    }

    /* Scan tokens in the file. */
    while (argc < MAX_ARGS && !feof(fhnd)) {
	char  *token;
	char  *p;
	const char *whitespace = " \t\r\n";
	char  cDelimiter;
	int   len, token_len;
	
	if (fgets(line, sizeof(line), fhnd) == NULL) break;
	
	// Trim ending newlines
	len = strlen(line);
	if (line[len-1]=='\n')
	    line[--len] = '\0';
	if (line[len-1]=='\r')
	    line[--len] = '\0';

	if (len==0) continue;

	for (p = line; *p != '\0' && argc < MAX_ARGS; p++) {
	    // first, scan whitespaces
	    while (*p != '\0' && strchr(whitespace, *p) != NULL) p++;

	    if (*p == '\0')		    // are we done yet?
		break;
	    
	    if (*p == '"' || *p == '\'') {    // is token a quoted string
		cDelimiter = *p++;	    // save quote delimiter
		token = p;
		
		while (*p != '\0' && *p != cDelimiter) p++;
		
		if (*p == '\0')		// found end of the line, but,
		    cDelimiter = '\0';	// didn't find a matching quote

	    } else {			// token's not a quoted string
		token = p;
		
		while (*p != '\0' && strchr(whitespace, *p) == NULL) p++;
		
		cDelimiter = *p;
	    }
	    
	    *p = '\0';
	    token_len = p-token;
	    
	    if (token_len > 0) {
		if (*token == '#')
		    break;  // ignore remainder of line
		
		argv[argc] = pj_pool_alloc(pool, token_len + 1);
		pj_memcpy(argv[argc], token, token_len + 1);
		++argc;
	    }
	    
	    *p = cDelimiter;
	}
    }

    /* Copy arguments from command line */
    for (i=1; i<*app_argc && argc < MAX_ARGS; ++i)
	argv[argc++] = (*app_argv)[i];

    if (argc == MAX_ARGS && (i!=*app_argc || !feof(fhnd))) {
	PJ_LOG(1,(THIS_FILE, 
		  "Too many arguments specified in cmd line/config file"));
	fflush(stdout);
	fclose(fhnd);
	return -1;
    }

    fclose(fhnd);

    /* Assign the new command line back to the original command line. */
    *app_argc = argc;
    *app_argv = argv;
    return 0;

}

static int my_atoi(const char *cs)
{
    pj_str_t s;

    pj_cstr(&s, cs);
    if (cs[0] == '-') {
	s.ptr++, s.slen--;
	return 0 - (int)pj_strtoul(&s);
    } else if (cs[0] == '+') {
	s.ptr++, s.slen--;
	return pj_strtoul(&s);
    } else {
	return pj_strtoul(&s);
    }
}


/* Parse arguments. */
static pj_status_t parse_args(int argc, char *argv[],
			      struct app_config *cfg,
			      pj_str_t *uri_to_call)
{
    int c;
    int option_index;
    enum { OPT_CONFIG_FILE=127, OPT_LOG_FILE, OPT_LOG_LEVEL, OPT_APP_LOG_LEVEL, 
	   OPT_HELP, OPT_VERSION, OPT_NULL_AUDIO, 
	   OPT_LOCAL_PORT, OPT_IP_ADDR, OPT_PROXY, OPT_OUTBOUND_PROXY, 
	   OPT_REGISTRAR, OPT_REG_TIMEOUT, OPT_PUBLISH, OPT_ID, OPT_CONTACT,
	   OPT_100REL, OPT_REALM, OPT_USERNAME, OPT_PASSWORD,
	   OPT_NAMESERVER, OPT_STUN_DOMAIN, OPT_STUN_SRV,
	   OPT_ADD_BUDDY, OPT_OFFER_X_MS_MSG, OPT_NO_PRESENCE,
	   OPT_AUTO_ANSWER, OPT_AUTO_HANGUP, OPT_AUTO_PLAY, OPT_AUTO_LOOP,
	   OPT_AUTO_CONF, OPT_CLOCK_RATE, OPT_USE_ICE,
	   OPT_PLAY_FILE, OPT_PLAY_TONE, OPT_RTP_PORT, OPT_ADD_CODEC, 
	   OPT_ILBC_MODE, OPT_REC_FILE, OPT_AUTO_REC,
	   OPT_COMPLEXITY, OPT_QUALITY, OPT_PTIME, OPT_NO_VAD,
	   OPT_RX_DROP_PCT, OPT_TX_DROP_PCT, OPT_EC_TAIL,
	   OPT_NEXT_ACCOUNT, OPT_NEXT_CRED, OPT_MAX_CALLS, 
	   OPT_DURATION, OPT_NO_TCP, OPT_NO_UDP, OPT_THREAD_CNT,
	   OPT_NOREFERSUB,
	   OPT_USE_TLS, OPT_TLS_CA_FILE, OPT_TLS_CERT_FILE, OPT_TLS_PRIV_FILE,
	   OPT_TLS_PASSWORD, OPT_TLS_VERIFY_SERVER, OPT_TLS_VERIFY_CLIENT,
	   OPT_TLS_NEG_TIMEOUT,
	   OPT_CAPTURE_DEV, OPT_PLAYBACK_DEV,
    };
    struct pj_getopt_option long_options[] = {
	{ "config-file",1, 0, OPT_CONFIG_FILE},
	{ "log-file",	1, 0, OPT_LOG_FILE},
	{ "log-level",	1, 0, OPT_LOG_LEVEL},
	{ "app-log-level",1,0,OPT_APP_LOG_LEVEL},
	{ "help",	0, 0, OPT_HELP},
	{ "version",	0, 0, OPT_VERSION},
	{ "clock-rate",	1, 0, OPT_CLOCK_RATE},
	{ "null-audio", 0, 0, OPT_NULL_AUDIO},
	{ "local-port", 1, 0, OPT_LOCAL_PORT},
	{ "ip-addr",	1, 0, OPT_IP_ADDR},
	{ "no-tcp",     0, 0, OPT_NO_TCP},
	{ "no-udp",     0, 0, OPT_NO_UDP},
	{ "norefersub", 0, 0, OPT_NOREFERSUB},
	{ "proxy",	1, 0, OPT_PROXY},
	{ "outbound",	1, 0, OPT_OUTBOUND_PROXY},
	{ "registrar",	1, 0, OPT_REGISTRAR},
	{ "reg-timeout",1, 0, OPT_REG_TIMEOUT},
	{ "publish",    0, 0, OPT_PUBLISH},
	{ "use-100rel", 0, 0, OPT_100REL},
	{ "id",		1, 0, OPT_ID},
	{ "contact",	1, 0, OPT_CONTACT},
	{ "realm",	1, 0, OPT_REALM},
	{ "username",	1, 0, OPT_USERNAME},
	{ "password",	1, 0, OPT_PASSWORD},
	{ "nameserver", 1, 0, OPT_NAMESERVER},
	{ "stun-domain",1, 0, OPT_STUN_DOMAIN},
	{ "stun-srv",   1, 0, OPT_STUN_SRV},
	{ "add-buddy",  1, 0, OPT_ADD_BUDDY},
	{ "offer-x-ms-msg",0,0,OPT_OFFER_X_MS_MSG},
	{ "no-presence", 0, 0, OPT_NO_PRESENCE},
	{ "auto-answer",1, 0, OPT_AUTO_ANSWER},
	{ "auto-hangup",1, 0, OPT_AUTO_HANGUP},
	{ "auto-play",  0, 0, OPT_AUTO_PLAY},
	{ "auto-rec",   0, 0, OPT_AUTO_REC},
	{ "auto-loop",  0, 0, OPT_AUTO_LOOP},
	{ "auto-conf",  0, 0, OPT_AUTO_CONF},
	{ "play-file",  1, 0, OPT_PLAY_FILE},
	{ "play-tone",  1, 0, OPT_PLAY_TONE},
	{ "rec-file",   1, 0, OPT_REC_FILE},
	{ "rtp-port",	1, 0, OPT_RTP_PORT},
	{ "use-ice",    0, 0, OPT_USE_ICE},
	{ "add-codec",  1, 0, OPT_ADD_CODEC},
	{ "complexity",	1, 0, OPT_COMPLEXITY},
	{ "quality",	1, 0, OPT_QUALITY},
	{ "ptime",      1, 0, OPT_PTIME},
	{ "no-vad",     0, 0, OPT_NO_VAD},
	{ "ec-tail",    1, 0, OPT_EC_TAIL},
	{ "ilbc-mode",	1, 0, OPT_ILBC_MODE},
	{ "rx-drop-pct",1, 0, OPT_RX_DROP_PCT},
	{ "tx-drop-pct",1, 0, OPT_TX_DROP_PCT},
	{ "next-account",0,0, OPT_NEXT_ACCOUNT},
	{ "next-cred",	0, 0, OPT_NEXT_CRED},
	{ "max-calls",	1, 0, OPT_MAX_CALLS},
	{ "duration",	1, 0, OPT_DURATION},
	{ "thread-cnt",	1, 0, OPT_THREAD_CNT},
	{ "use-tls",	0, 0, OPT_USE_TLS}, 
	{ "tls-ca-file",1, 0, OPT_TLS_CA_FILE},
	{ "tls-cert-file",1,0, OPT_TLS_CERT_FILE}, 
	{ "tls-privkey-file",1,0, OPT_TLS_PRIV_FILE},
	{ "tls-password",1,0, OPT_TLS_PASSWORD},
	{ "tls-verify-server", 0, 0, OPT_TLS_VERIFY_SERVER},
	{ "tls-verify-client", 0, 0, OPT_TLS_VERIFY_CLIENT},
	{ "tls-neg-timeout", 1, 0, OPT_TLS_NEG_TIMEOUT},
	{ "capture-dev",    1, 0, OPT_CAPTURE_DEV},
	{ "playback-dev",   1, 0, OPT_PLAYBACK_DEV},
	{ NULL, 0, 0, 0}
    };
    pj_status_t status;
    pjsua_acc_config *cur_acc;
    char *config_file = NULL;
    unsigned i;

    /* Run pj_getopt once to see if user specifies config file to read. */ 
    pj_optind = 0;
    while ((c=pj_getopt_long(argc, argv, "", long_options, 
			     &option_index)) != -1) 
    {
	switch (c) {
	case OPT_CONFIG_FILE:
	    config_file = pj_optarg;
	    break;
	}
	if (config_file)
	    break;
    }

    if (config_file) {
	status = read_config_file(app_config.pool, config_file, &argc, &argv);
	if (status != 0)
	    return status;
    }

    cfg->acc_cnt = 0;
    cur_acc = &cfg->acc_cfg[0];


    /* Reinitialize and re-run pj_getopt again, possibly with new arguments
     * read from config file.
     */
    pj_optind = 0;
    while((c=pj_getopt_long(argc,argv, "", long_options,&option_index))!=-1) {
	pj_str_t tmp;
	long lval;

	switch (c) {

	case OPT_CONFIG_FILE:
	    /* Ignore as this has been processed before */
	    break;
	
	case OPT_LOG_FILE:
	    cfg->log_cfg.log_filename = pj_str(pj_optarg);
	    break;

	case OPT_LOG_LEVEL:
	    c = pj_strtoul(pj_cstr(&tmp, pj_optarg));
	    if (c < 0 || c > 6) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: expecting integer value 0-6 "
			  "for --log-level"));
		return PJ_EINVAL;
	    }
	    cfg->log_cfg.level = c;
	    pj_log_set_level( c );
	    break;

	case OPT_APP_LOG_LEVEL:
	    cfg->log_cfg.console_level = pj_strtoul(pj_cstr(&tmp, pj_optarg));
	    if (cfg->log_cfg.console_level < 0 || cfg->log_cfg.console_level > 6) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: expecting integer value 0-6 "
			  "for --app-log-level"));
		return PJ_EINVAL;
	    }
	    break;

	case OPT_HELP:
	    usage();
	    return PJ_EINVAL;

	case OPT_VERSION:   /* version */
	    pj_dump_config();
	    return PJ_EINVAL;

	case OPT_NULL_AUDIO:
	    cfg->null_audio = PJ_TRUE;
	    break;

	case OPT_CLOCK_RATE:
	    lval = pj_strtoul(pj_cstr(&tmp, pj_optarg));
	    if (lval < 8000 || lval > 48000) {
		PJ_LOG(1,(THIS_FILE, "Error: expecting value between "
				     "8000-48000 for clock rate"));
		return PJ_EINVAL;
	    }
	    cfg->media_cfg.clock_rate = lval; 
	    break;

	case OPT_LOCAL_PORT:   /* local-port */
	    lval = pj_strtoul(pj_cstr(&tmp, pj_optarg));
	    if (lval < 0 || lval > 65535) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: expecting integer value for "
			  "--local-port"));
		return PJ_EINVAL;
	    }
	    cfg->udp_cfg.port = (pj_uint16_t)lval;
	    break;

	case OPT_IP_ADDR: /* ip-addr */
	    cfg->udp_cfg.public_addr = pj_str(pj_optarg);
	    cfg->rtp_cfg.public_addr = pj_str(pj_optarg);
	    break;

	case OPT_NO_UDP: /* no-udp */
	    if (cfg->no_tcp) {
	      PJ_LOG(1,(THIS_FILE,"Error: can not disable both TCP and UDP"));
	      return PJ_EINVAL;
	    }

	    cfg->no_udp = PJ_TRUE;
	    break;

	case OPT_NOREFERSUB: /* norefersub */
	    cfg->no_refersub = PJ_TRUE;
	    break;

	case OPT_NO_TCP: /* no-tcp */
	    if (cfg->no_udp) {
	      PJ_LOG(1,(THIS_FILE,"Error: can not disable both TCP and UDP"));
	      return PJ_EINVAL;
	    }

	    cfg->no_tcp = PJ_TRUE;
	    break;

	case OPT_PROXY:   /* proxy */
	    if (pjsua_verify_sip_url(pj_optarg) != 0) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: invalid SIP URL '%s' "
			  "in proxy argument", pj_optarg));
		return PJ_EINVAL;
	    }
	    cur_acc->proxy[cur_acc->proxy_cnt++] = pj_str(pj_optarg);
	    break;

	case OPT_OUTBOUND_PROXY:   /* outbound proxy */
	    if (pjsua_verify_sip_url(pj_optarg) != 0) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: invalid SIP URL '%s' "
			  "in outbound proxy argument", pj_optarg));
		return PJ_EINVAL;
	    }
	    cfg->cfg.outbound_proxy[cfg->cfg.outbound_proxy_cnt++] = pj_str(pj_optarg);
	    break;

	case OPT_REGISTRAR:   /* registrar */
	    if (pjsua_verify_sip_url(pj_optarg) != 0) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: invalid SIP URL '%s' in "
			  "registrar argument", pj_optarg));
		return PJ_EINVAL;
	    }
	    cur_acc->reg_uri = pj_str(pj_optarg);
	    break;

	case OPT_REG_TIMEOUT:   /* reg-timeout */
	    cur_acc->reg_timeout = pj_strtoul(pj_cstr(&tmp,pj_optarg));
	    if (cur_acc->reg_timeout < 1 || cur_acc->reg_timeout > 3600) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: invalid value for --reg-timeout "
			  "(expecting 1-3600)"));
		return PJ_EINVAL;
	    }
	    break;

	case OPT_PUBLISH:   /* publish */
	    cur_acc->publish_enabled = PJ_TRUE;
	    break;

	case OPT_100REL: /** 100rel */
	    cur_acc->require_100rel = PJ_TRUE;
	    cfg->cfg.require_100rel = PJ_TRUE;
	    break;

	case OPT_ID:   /* id */
	    if (pjsua_verify_sip_url(pj_optarg) != 0) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: invalid SIP URL '%s' "
			  "in local id argument", pj_optarg));
		return PJ_EINVAL;
	    }
	    cur_acc->id = pj_str(pj_optarg);
	    break;

	case OPT_CONTACT:   /* contact */
	    if (pjsua_verify_sip_url(pj_optarg) != 0) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: invalid SIP URL '%s' "
			  "in contact argument", pj_optarg));
		return PJ_EINVAL;
	    }
	    cur_acc->force_contact = pj_str(pj_optarg);
	    break;

	case OPT_NEXT_ACCOUNT: /* Add more account. */
	    cfg->acc_cnt++;
	    cur_acc = &cfg->acc_cfg[cfg->acc_cnt];
	    break;

	case OPT_USERNAME:   /* Default authentication user */
	    cur_acc->cred_info[cur_acc->cred_count].username = pj_str(pj_optarg);
	    cur_acc->cred_info[cur_acc->cred_count].scheme = pj_str("digest");
	    break;

	case OPT_REALM:	    /* Default authentication realm. */
	    cur_acc->cred_info[cur_acc->cred_count].realm = pj_str(pj_optarg);
	    break;

	case OPT_PASSWORD:   /* authentication password */
	    cur_acc->cred_info[cur_acc->cred_count].data_type = PJSIP_CRED_DATA_PLAIN_PASSWD;
	    cur_acc->cred_info[cur_acc->cred_count].data = pj_str(pj_optarg);
	    break;

	case OPT_NEXT_CRED: /* next credential */
	    cur_acc->cred_count++;
	    break;

	case OPT_NAMESERVER: /* nameserver */
	    cfg->cfg.nameserver[cfg->cfg.nameserver_count++] = pj_str(pj_optarg);
	    if (cfg->cfg.nameserver_count > PJ_ARRAY_SIZE(cfg->cfg.nameserver)) {
		PJ_LOG(1,(THIS_FILE, "Error: too many nameservers"));
		return PJ_ETOOMANY;
	    }
	    break;

	case OPT_STUN_DOMAIN:   /* STUN domain */
	    cfg->cfg.stun_domain = pj_str(pj_optarg);
	    break;

	case OPT_STUN_SRV:   /* STUN server */
	    cfg->cfg.stun_host = pj_str(pj_optarg);
	    break;

	case OPT_ADD_BUDDY: /* Add to buddy list. */
	    if (pjsua_verify_sip_url(pj_optarg) != 0) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: invalid URL '%s' in "
			  "--add-buddy option", pj_optarg));
		return -1;
	    }
	    if (cfg->buddy_cnt == PJ_ARRAY_SIZE(cfg->buddy_cfg)) {
		PJ_LOG(1,(THIS_FILE, 
			  "Error: too many buddies in buddy list."));
		return -1;
	    }
	    cfg->buddy_cfg[cfg->buddy_cnt].uri = pj_str(pj_optarg);
	    cfg->buddy_cnt++;
	    break;

	case OPT_AUTO_PLAY:
	    cfg->auto_play = 1;
	    break;

	case OPT_AUTO_REC:
	    cfg->auto_rec = 1;
	    break;

	case OPT_AUTO_LOOP:
	    cfg->auto_loop = 1;
	    break;

	case OPT_AUTO_CONF:
	    cfg->auto_conf = 1;
	    break;

	case OPT_PLAY_FILE:
	    cfg->wav_files[cfg->wav_count++] = pj_str(pj_optarg);
	    break;

	case OPT_PLAY_TONE:
	    {
		int f1, f2, on, off;
		int n;

		n = sscanf(pj_optarg, "%d,%d,%d,%d", &f1, &f2, &on, &off);
		if (n != 4) {
		    puts("Expecting f1,f2,on,off in --play-tone");
		    return -1;
		}

		cfg->tones[cfg->tone_count].freq1 = (short)f1;
		cfg->tones[cfg->tone_count].freq2 = (short)f2;
		cfg->tones[cfg->tone_count].on_msec = (short)on;
		cfg->tones[cfg->tone_count].off_msec = (short)off;
		++cfg->tone_count;
	    }
	    break;

	case OPT_REC_FILE:
	    cfg->rec_file = pj_str(pj_optarg);
	    break;

	case OPT_USE_ICE:
	    cfg->media_cfg.enable_ice = PJ_TRUE;
	    break;

	case OPT_RTP_PORT:
	    cfg->rtp_cfg.port = my_atoi(pj_optarg);
	    if (cfg->rtp_cfg.port == 0) {
		enum { START_PORT=4000 };
		unsigned range;

		range = (65535-START_PORT-PJSUA_MAX_CALLS*2);
		cfg->rtp_cfg.port = START_PORT + 
				    ((pj_rand() % range) & 0xFFFE);
	    }

	    if (cfg->rtp_cfg.port < 1 || cfg->rtp_cfg.port > 65535) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: rtp-port argument value "
			  "(expecting 1-65535"));
		return -1;
	    }
	    break;

	case OPT_ADD_CODEC:
	    cfg->codec_arg[cfg->codec_cnt++] = pj_str(pj_optarg);
	    break;

	/* These options were no longer valid after new pjsua */
	/*
	case OPT_COMPLEXITY:
	    cfg->complexity = my_atoi(pj_optarg);
	    if (cfg->complexity < 0 || cfg->complexity > 10) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid --complexity (expecting 0-10"));
		return -1;
	    }
	    break;
	*/

	case OPT_DURATION:
	    cfg->duration = my_atoi(pj_optarg);
	    break;

	case OPT_THREAD_CNT:
	    cfg->cfg.thread_cnt = my_atoi(pj_optarg);
	    if (cfg->cfg.thread_cnt > 128) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid --thread-cnt option"));
		return -1;
	    }
	    break;

	case OPT_PTIME:
	    cfg->media_cfg.ptime = my_atoi(pj_optarg);
	    if (cfg->media_cfg.ptime < 10 || cfg->media_cfg.ptime > 1000) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid --ptime option"));
		return -1;
	    }
	    break;

	case OPT_NO_VAD:
	    cfg->media_cfg.no_vad = PJ_TRUE;
	    break;

	case OPT_EC_TAIL:
	    cfg->media_cfg.ec_tail_len = my_atoi(pj_optarg);
	    if (cfg->media_cfg.ec_tail_len > 1000) {
		PJ_LOG(1,(THIS_FILE, "I think the ec-tail length setting "
			  "is too big"));
		return -1;
	    }
	    break;

	case OPT_QUALITY:
	    cfg->media_cfg.quality = my_atoi(pj_optarg);
	    if (cfg->media_cfg.quality < 0 || cfg->media_cfg.quality > 10) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid --quality (expecting 0-10"));
		return -1;
	    }
	    break;

	case OPT_ILBC_MODE:
	    cfg->media_cfg.ilbc_mode = my_atoi(pj_optarg);
	    if (cfg->media_cfg.ilbc_mode!=20 && cfg->media_cfg.ilbc_mode!=30) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid --ilbc-mode (expecting 20 or 30"));
		return -1;
	    }
	    break;

	case OPT_RX_DROP_PCT:
	    cfg->media_cfg.rx_drop_pct = my_atoi(pj_optarg);
	    if (cfg->media_cfg.rx_drop_pct > 100) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid --rx-drop-pct (expecting <= 100"));
		return -1;
	    }
	    break;
	    
	case OPT_TX_DROP_PCT:
	    cfg->media_cfg.tx_drop_pct = my_atoi(pj_optarg);
	    if (cfg->media_cfg.tx_drop_pct > 100) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid --tx-drop-pct (expecting <= 100"));
		return -1;
	    }
	    break;

	case OPT_AUTO_ANSWER:
	    cfg->auto_answer = my_atoi(pj_optarg);
	    if (cfg->auto_answer < 100 || cfg->auto_answer > 699) {
		PJ_LOG(1,(THIS_FILE,
			  "Error: invalid code in --auto-answer "
			  "(expecting 100-699"));
		return -1;
	    }
	    break;

	case OPT_MAX_CALLS:
	    cfg->cfg.max_calls = my_atoi(pj_optarg);
	    if (cfg->cfg.max_calls < 1 || cfg->cfg.max_calls > PJSUA_MAX_CALLS) {
		PJ_LOG(1,(THIS_FILE,"Error: maximum call setting exceeds "
				    "compile time limit (PJSUA_MAX_CALLS=%d)",
			  PJSUA_MAX_CALLS));
		return -1;
	    }
	    break;

	case OPT_USE_TLS:
	    cfg->use_tls = PJ_TRUE;
#if !defined(PJSIP_HAS_TLS_TRANSPORT) || PJSIP_HAS_TLS_TRANSPORT==0
	    PJ_LOG(1,(THIS_FILE, "Error: TLS support is not configured"));
	    return -1;
#endif
	    break;
	    
	case OPT_TLS_CA_FILE:
	    cfg->udp_cfg.tls_setting.ca_list_file = pj_str(pj_optarg);
#if !defined(PJSIP_HAS_TLS_TRANSPORT) || PJSIP_HAS_TLS_TRANSPORT==0
	    PJ_LOG(1,(THIS_FILE, "Error: TLS support is not configured"));
	    return -1;
#endif
	    break;
	    
	case OPT_TLS_CERT_FILE:
	    cfg->udp_cfg.tls_setting.cert_file = pj_str(pj_optarg);
#if !defined(PJSIP_HAS_TLS_TRANSPORT) || PJSIP_HAS_TLS_TRANSPORT==0
	    PJ_LOG(1,(THIS_FILE, "Error: TLS support is not configured"));
	    return -1;
#endif
	    break;
	    
	case OPT_TLS_PRIV_FILE:
	    cfg->udp_cfg.tls_setting.privkey_file = pj_str(pj_optarg);
	    break;

	case OPT_TLS_PASSWORD:
	    cfg->udp_cfg.tls_setting.password = pj_str(pj_optarg);
#if !defined(PJSIP_HAS_TLS_TRANSPORT) || PJSIP_HAS_TLS_TRANSPORT==0
	    PJ_LOG(1,(THIS_FILE, "Error: TLS support is not configured"));
	    return -1;
#endif
	    break;

	case OPT_TLS_VERIFY_SERVER:
	    cfg->udp_cfg.tls_setting.verify_server = PJ_TRUE;
	    break;

	case OPT_TLS_VERIFY_CLIENT:
	    cfg->udp_cfg.tls_setting.verify_client = PJ_TRUE;
	    break;

	case OPT_TLS_NEG_TIMEOUT:
	    cfg->udp_cfg.tls_setting.timeout.sec = atoi(pj_optarg);
	    break;

	case OPT_CAPTURE_DEV:
	    cfg->capture_dev = atoi(pj_optarg);
	    break;

	case OPT_PLAYBACK_DEV:
	    cfg->playback_dev = atoi(pj_optarg);
	    break;

	default:
	    PJ_LOG(1,(THIS_FILE, 
		      "Argument \"%s\" is not valid. Use --help to see help",
		      argv[pj_optind-1]));
	    return -1;
	}
    }

    if (pj_optind != argc) {
	pj_str_t uri_arg;

	if (pjsua_verify_sip_url(argv[pj_optind]) != PJ_SUCCESS) {
	    PJ_LOG(1,(THIS_FILE, "Invalid SIP URI %s", argv[pj_optind]));
	    return -1;
	}
	uri_arg = pj_str(argv[pj_optind]);
	if (uri_to_call)
	    *uri_to_call = uri_arg;
	pj_optind++;

	/* Add URI to call to buddy list if it's not already there */
	for (i=0; i<cfg->buddy_cnt; ++i) {
	    if (pj_stricmp(&cfg->buddy_cfg[i].uri, &uri_arg)==0)
		break;
	}
	if (i == cfg->buddy_cnt && cfg->buddy_cnt < PJSUA_MAX_BUDDIES) {
	    cfg->buddy_cfg[cfg->buddy_cnt++].uri = uri_arg;
	}

    } else {
	if (uri_to_call)
	    uri_to_call->slen = 0;
    }

    if (pj_optind != argc) {
	PJ_LOG(1,(THIS_FILE, "Error: unknown options %s", argv[pj_optind]));
	return PJ_EINVAL;
    }

    if (cfg->acc_cfg[cfg->acc_cnt].id.slen)
	cfg->acc_cnt++;

    for (i=0; i<cfg->acc_cnt; ++i) {
	if (cfg->acc_cfg[i].cred_info[cfg->acc_cfg[i].cred_count].username.slen)
	{
	    cfg->acc_cfg[i].cred_count++;
	}
    }


    return PJ_SUCCESS;
}


/*
 * Save account settings
 */
static void write_account_settings(int acc_index, pj_str_t *result)
{
    unsigned i;
    char line[128];
    pjsua_acc_config *acc_cfg = &app_config.acc_cfg[acc_index];

    
    pj_ansi_sprintf(line, "\n#\n# Account %d:\n#\n", acc_index);
    pj_strcat2(result, line);


    /* Identity */
    if (acc_cfg->id.slen) {
	pj_ansi_sprintf(line, "--id %.*s\n", 
			(int)acc_cfg->id.slen, 
			acc_cfg->id.ptr);
	pj_strcat2(result, line);
    }

    /* Registrar server */
    if (acc_cfg->reg_uri.slen) {
	pj_ansi_sprintf(line, "--registrar %.*s\n",
			      (int)acc_cfg->reg_uri.slen,
			      acc_cfg->reg_uri.ptr);
	pj_strcat2(result, line);

	pj_ansi_sprintf(line, "--reg-timeout %u\n",
			      acc_cfg->reg_timeout);
	pj_strcat2(result, line);
    }

    /* Contact */
    if (acc_cfg->force_contact.slen) {
	pj_ansi_sprintf(line, "--contact %.*s\n", 
			(int)acc_cfg->force_contact.slen, 
			acc_cfg->force_contact.ptr);
	pj_strcat2(result, line);
    }

    /* Proxy */
    for (i=0; i<acc_cfg->proxy_cnt; ++i) {
	pj_ansi_sprintf(line, "--proxy %.*s\n",
			      (int)acc_cfg->proxy[i].slen,
			      acc_cfg->proxy[i].ptr);
	pj_strcat2(result, line);
    }

    /* Credentials */
    for (i=0; i<acc_cfg->cred_count; ++i) {
	if (acc_cfg->cred_info[i].realm.slen) {
	    pj_ansi_sprintf(line, "--realm %.*s\n",
				  (int)acc_cfg->cred_info[i].realm.slen,
				  acc_cfg->cred_info[i].realm.ptr);
	    pj_strcat2(result, line);
	}

	if (acc_cfg->cred_info[i].username.slen) {
	    pj_ansi_sprintf(line, "--username %.*s\n",
				  (int)acc_cfg->cred_info[i].username.slen,
				  acc_cfg->cred_info[i].username.ptr);
	    pj_strcat2(result, line);
	}

	if (acc_cfg->cred_info[i].data.slen) {
	    pj_ansi_sprintf(line, "--password %.*s\n",
				  (int)acc_cfg->cred_info[i].data.slen,
				  acc_cfg->cred_info[i].data.ptr);
	    pj_strcat2(result, line);
	}

	if (i != acc_cfg->cred_count - 1)
	    pj_strcat2(result, "--next-cred\n");
    }

}


/*
 * Write settings.
 */
static int write_settings(const struct app_config *config,
			  char *buf, pj_size_t max)
{
    unsigned acc_index;
    unsigned i;
    pj_str_t cfg;
    char line[128];

    PJ_UNUSED_ARG(max);

    cfg.ptr = buf;
    cfg.slen = 0;

    /* Logging. */
    pj_strcat2(&cfg, "#\n# Logging options:\n#\n");
    pj_ansi_sprintf(line, "--log-level %d\n",
		    config->log_cfg.level);
    pj_strcat2(&cfg, line);

    pj_ansi_sprintf(line, "--app-log-level %d\n",
		    config->log_cfg.console_level);
    pj_strcat2(&cfg, line);

    if (config->log_cfg.log_filename.slen) {
	pj_ansi_sprintf(line, "--log-file %.*s\n",
			(int)config->log_cfg.log_filename.slen,
			config->log_cfg.log_filename.ptr);
	pj_strcat2(&cfg, line);
    }


    /* Save account settings. */
    for (acc_index=0; acc_index < config->acc_cnt; ++acc_index) {
	
	write_account_settings(acc_index, &cfg);

	if (acc_index < config->acc_cnt-1)
	    pj_strcat2(&cfg, "--next-account\n");
    }


    pj_strcat2(&cfg, "\n#\n# Network settings:\n#\n");

    /* Outbound proxy */
    for (i=0; i<config->cfg.outbound_proxy_cnt; ++i) {
	pj_ansi_sprintf(line, "--outbound %.*s\n",
			      (int)config->cfg.outbound_proxy[i].slen,
			      config->cfg.outbound_proxy[i].ptr);
	pj_strcat2(&cfg, line);
    }


    /* UDP Transport. */
    pj_ansi_sprintf(line, "--local-port %d\n", config->udp_cfg.port);
    pj_strcat2(&cfg, line);

    /* IP address, if any. */
    if (config->udp_cfg.public_addr.slen) {
	pj_ansi_sprintf(line, "--ip-addr %.*s\n", 
			(int)config->udp_cfg.public_addr.slen,
			config->udp_cfg.public_addr.ptr);
	pj_strcat2(&cfg, line);
    }

    /* No TCP ? */
    if (config->no_tcp) {
	pj_strcat2(&cfg, "--no-tcp\n");
    }

    /* No UDP ? */
    if (config->no_udp) {
	pj_strcat2(&cfg, "--no-udp\n");
    }

    /* STUN */
    if (config->cfg.stun_domain.slen) {
	pj_ansi_sprintf(line, "--stun-domain %.*s\n",
			(int)config->cfg.stun_domain.slen, 
			config->cfg.stun_domain.ptr);
	pj_strcat2(&cfg, line);
    }
    if (config->cfg.stun_host.slen) {
	pj_ansi_sprintf(line, "--stun-srv %.*s\n",
			(int)config->cfg.stun_host.slen, 
			config->cfg.stun_host.ptr);
	pj_strcat2(&cfg, line);
    }


    /* TLS */
    if (config->use_tls)
	pj_strcat2(&cfg, "--use-tls\n");
    if (config->udp_cfg.tls_setting.ca_list_file.slen) {
	pj_ansi_sprintf(line, "--tls-ca-file %.*s\n",
			(int)config->udp_cfg.tls_setting.ca_list_file.slen, 
			config->udp_cfg.tls_setting.ca_list_file.ptr);
	pj_strcat2(&cfg, line);
    }
    if (config->udp_cfg.tls_setting.cert_file.slen) {
	pj_ansi_sprintf(line, "--tls-cert-file %.*s\n",
			(int)config->udp_cfg.tls_setting.cert_file.slen, 
			config->udp_cfg.tls_setting.cert_file.ptr);
	pj_strcat2(&cfg, line);
    }
    if (config->udp_cfg.tls_setting.privkey_file.slen) {
	pj_ansi_sprintf(line, "--tls-privkey-file %.*s\n",
			(int)config->udp_cfg.tls_setting.privkey_file.slen, 
			config->udp_cfg.tls_setting.privkey_file.ptr);
	pj_strcat2(&cfg, line);
    }

    if (config->udp_cfg.tls_setting.password.slen) {
	pj_ansi_sprintf(line, "--tls-password %.*s\n",
			(int)config->udp_cfg.tls_setting.password.slen, 
			config->udp_cfg.tls_setting.password.ptr);
	pj_strcat2(&cfg, line);
    }

    if (config->udp_cfg.tls_setting.verify_server)
	pj_strcat2(&cfg, "--tls-verify-server\n");

    if (config->udp_cfg.tls_setting.verify_client)
	pj_strcat2(&cfg, "--tls-verify-client\n");

    if (config->udp_cfg.tls_setting.timeout.sec) {
	pj_ansi_sprintf(line, "--tls-neg-timeout %d\n",
			(int)config->udp_cfg.tls_setting.timeout.sec);
	pj_strcat2(&cfg, line);
    }

    pj_strcat2(&cfg, "\n#\n# Media settings:\n#\n");


    /* Media */
    if (config->media_cfg.enable_ice)
	pj_strcat2(&cfg, "--use-ice\n");
    if (config->null_audio)
	pj_strcat2(&cfg, "--null-audio\n");
    if (config->auto_play)
	pj_strcat2(&cfg, "--auto-play\n");
    if (config->auto_loop)
	pj_strcat2(&cfg, "--auto-loop\n");
    if (config->auto_conf)
	pj_strcat2(&cfg, "--auto-conf\n");
    for (i=0; i<config->wav_count; ++i) {
	pj_ansi_sprintf(line, "--play-file %s\n",
			config->wav_files[i].ptr);
	pj_strcat2(&cfg, line);
    }
    for (i=0; i<config->tone_count; ++i) {
	pj_ansi_sprintf(line, "--play-tone %d,%d,%d,%d\n",
			config->tones[i].freq1, config->tones[i].freq2, 
			config->tones[i].on_msec, config->tones[i].off_msec);
	pj_strcat2(&cfg, line);
    }
    if (config->rec_file.slen) {
	pj_ansi_sprintf(line, "--rec-file %s\n",
			config->rec_file.ptr);
	pj_strcat2(&cfg, line);
    }
    if (config->auto_rec)
	pj_strcat2(&cfg, "--auto-rec\n");
    if (config->capture_dev != PJSUA_INVALID_ID) {
	pj_ansi_sprintf(line, "--capture-dev %d\n", config->capture_dev);
	pj_strcat2(&cfg, line);
    }
    if (config->playback_dev != PJSUA_INVALID_ID) {
	pj_ansi_sprintf(line, "--playback-dev %d\n", config->playback_dev);
	pj_strcat2(&cfg, line);
    }

    /* Media clock rate. */
    if (config->media_cfg.clock_rate != PJSUA_DEFAULT_CLOCK_RATE) {
	pj_ansi_sprintf(line, "--clock-rate %d\n",
			config->media_cfg.clock_rate);
	pj_strcat2(&cfg, line);
    } else {
	pj_ansi_sprintf(line, "#using default --clock-rate %d\n",
			config->media_cfg.clock_rate);
	pj_strcat2(&cfg, line);
    }

    /* quality */
    if (config->media_cfg.quality != PJSUA_DEFAULT_CODEC_QUALITY) {
	pj_ansi_sprintf(line, "--quality %d\n",
			config->media_cfg.quality);
	pj_strcat2(&cfg, line);
    } else {
	pj_ansi_sprintf(line, "#using default --quality %d\n",
			config->media_cfg.quality);
	pj_strcat2(&cfg, line);
    }


    /* ptime */
    if (config->media_cfg.ptime) {
	pj_ansi_sprintf(line, "--ptime %d\n",
			config->media_cfg.ptime);
	pj_strcat2(&cfg, line);
    }

    /* no-vad */
    if (config->media_cfg.no_vad) {
	pj_strcat2(&cfg, "--no-vad\n");
    }

    /* ec-tail */
    if (config->media_cfg.ec_tail_len != PJSUA_DEFAULT_EC_TAIL_LEN) {
	pj_ansi_sprintf(line, "--ec-tail %d\n",
			config->media_cfg.ec_tail_len);
	pj_strcat2(&cfg, line);
    } else {
	pj_ansi_sprintf(line, "#using default --ec-tail %d\n",
			config->media_cfg.ec_tail_len);
	pj_strcat2(&cfg, line);
    }


    /* ilbc-mode */
    if (config->media_cfg.ilbc_mode != PJSUA_DEFAULT_ILBC_MODE) {
	pj_ansi_sprintf(line, "--ilbc-mode %d\n",
			config->media_cfg.ilbc_mode);
	pj_strcat2(&cfg, line);
    } else {
	pj_ansi_sprintf(line, "#using default --ilbc-mode %d\n",
			config->media_cfg.ilbc_mode);
	pj_strcat2(&cfg, line);
    }

    /* RTP drop */
    if (config->media_cfg.tx_drop_pct) {
	pj_ansi_sprintf(line, "--tx-drop-pct %d\n",
			config->media_cfg.tx_drop_pct);
	pj_strcat2(&cfg, line);

    }
    if (config->media_cfg.rx_drop_pct) {
	pj_ansi_sprintf(line, "--rx-drop-pct %d\n",
			config->media_cfg.rx_drop_pct);
	pj_strcat2(&cfg, line);

    }


    /* Start RTP port. */
    pj_ansi_sprintf(line, "--rtp-port %d\n",
		    config->rtp_cfg.port);
    pj_strcat2(&cfg, line);

    /* Add codec. */
    for (i=0; i<config->codec_cnt; ++i) {
	pj_ansi_sprintf(line, "--add-codec %s\n",
		    config->codec_arg[i].ptr);
	pj_strcat2(&cfg, line);
    }

    pj_strcat2(&cfg, "\n#\n# User agent:\n#\n");

    /* Auto-answer. */
    if (config->auto_answer != 0) {
	pj_ansi_sprintf(line, "--auto-answer %d\n",
			config->auto_answer);
	pj_strcat2(&cfg, line);
    }

    /* Max calls. */
    pj_ansi_sprintf(line, "--max-calls %d\n",
		    config->cfg.max_calls);
    pj_strcat2(&cfg, line);

    /* Uas-duration. */
    if (config->duration != NO_LIMIT) {
	pj_ansi_sprintf(line, "--duration %d\n",
			config->duration);
	pj_strcat2(&cfg, line);
    }

    /* norefersub ? */
    if (config->no_refersub) {
	pj_strcat2(&cfg, "--norefersub\n");
    }


    pj_strcat2(&cfg, "\n#\n# Buddies:\n#\n");

    /* Add buddies. */
    for (i=0; i<config->buddy_cnt; ++i) {
	pj_ansi_sprintf(line, "--add-buddy %.*s\n",
			      (int)config->buddy_cfg[i].uri.slen,
			      config->buddy_cfg[i].uri.ptr);
	pj_strcat2(&cfg, line);
    }


    *(cfg.ptr + cfg.slen) = '\0';
    return cfg.slen;
}


/*
 * Dump application states.
 */
static void app_dump(pj_bool_t detail)
{
    pjsua_dump(detail);
}


/*****************************************************************************
 * Console application
 */

/*
 * Find next call when current call is disconnected or when user
 * press ']'
 */
static pj_bool_t find_next_call(void)
{
    int i, max;

    max = pjsua_call_get_max_count();
    for (i=current_call+1; i<max; ++i) {
	if (pjsua_call_is_active(i)) {
	    current_call = i;
	    return PJ_TRUE;
	}
    }

    for (i=0; i<current_call; ++i) {
	if (pjsua_call_is_active(i)) {
	    current_call = i;
	    return PJ_TRUE;
	}
    }

    current_call = PJSUA_INVALID_ID;
    return PJ_FALSE;
}


/*
 * Find previous call when user press '['
 */
static pj_bool_t find_prev_call(void)
{
    int i, max;

    max = pjsua_call_get_max_count();
    for (i=current_call-1; i>=0; --i) {
	if (pjsua_call_is_active(i)) {
	    current_call = i;
	    return PJ_TRUE;
	}
    }

    for (i=max-1; i>current_call; --i) {
	if (pjsua_call_is_active(i)) {
	    current_call = i;
	    return PJ_TRUE;
	}
    }

    current_call = PJSUA_INVALID_ID;
    return PJ_FALSE;
}


/* Callback from timer when the maximum call duration has been
 * exceeded.
 */
static void call_timeout_callback(pj_timer_heap_t *timer_heap,
				  struct pj_timer_entry *entry)
{
    pjsua_call_id call_id = entry->id;
    pjsua_msg_data msg_data;
    pjsip_generic_string_hdr warn;
    pj_str_t hname = pj_str("Warning");
    pj_str_t hvalue = pj_str("399 pjsua \"Call duration exceeded\"");

    PJ_UNUSED_ARG(timer_heap);

    if (call_id == PJSUA_INVALID_ID) {
	PJ_LOG(1,(THIS_FILE, "Invalid call ID in timer callback"));
	return;
    }
    
    /* Add warning header */
    pjsua_msg_data_init(&msg_data);
    pjsip_generic_string_hdr_init2(&warn, &hname, &hvalue);
    pj_list_push_back(&msg_data.hdr_list, &warn);

    /* Call duration has been exceeded; disconnect the call */
    PJ_LOG(3,(THIS_FILE, "Duration (%d seconds) has been exceeded "
			 "for call %d, disconnecting the call",
			 app_config.duration, call_id));
    entry->id = PJSUA_INVALID_ID;
    pjsua_call_hangup(call_id, 200, NULL, &msg_data);
}


/*
 * Handler when invite state has changed.
 */
static void on_call_state(pjsua_call_id call_id, pjsip_event *e)
{
    pjsua_call_info call_info;

    PJ_UNUSED_ARG(e);

    pjsua_call_get_info(call_id, &call_info);

    if (call_info.state == PJSIP_INV_STATE_DISCONNECTED) {

	/* Cancel duration timer, if any */
	if (app_config.call_data[call_id].timer.id != PJSUA_INVALID_ID) {
	    struct call_data *cd = &app_config.call_data[call_id];
	    pjsip_endpoint *endpt = pjsua_get_pjsip_endpt();

	    cd->timer.id = PJSUA_INVALID_ID;
	    pjsip_endpt_cancel_timer(endpt, &cd->timer);
	}

	PJ_LOG(3,(THIS_FILE, "Call %d is DISCONNECTED [reason=%d (%s)]", 
		  call_id,
		  call_info.last_status,
		  call_info.last_status_text.ptr));

	if (call_id == current_call) {
	    find_next_call();
	}

	/* Dump media state upon disconnected */
	if (1) {
	    char buf[1024];
	    pjsua_call_dump(call_id, PJ_TRUE, buf, 
			    sizeof(buf), "  ");
	    PJ_LOG(5,(THIS_FILE, 
		      "Call %d disconnected, dumping media stats\n%s", 
		      call_id, buf));
	}

    } else {

	if (app_config.duration!=NO_LIMIT && 
	    call_info.state == PJSIP_INV_STATE_CONFIRMED) 
	{
	    /* Schedule timer to hangup call after the specified duration */
	    struct call_data *cd = &app_config.call_data[call_id];
	    pjsip_endpoint *endpt = pjsua_get_pjsip_endpt();
	    pj_time_val delay;

	    cd->timer.id = call_id;
	    delay.sec = app_config.duration;
	    delay.msec = 0;
	    pjsip_endpt_schedule_timer(endpt, &cd->timer, &delay);
	}

	if (call_info.state == PJSIP_INV_STATE_EARLY) {
	    int code;
	    pj_str_t reason;
	    pjsip_msg *msg;

	    /* This can only occur because of TX or RX message */
	    pj_assert(e->type == PJSIP_EVENT_TSX_STATE);

	    if (e->body.tsx_state.type == PJSIP_EVENT_RX_MSG) {
		msg = e->body.tsx_state.src.rdata->msg_info.msg;
	    } else {
		msg = e->body.tsx_state.src.tdata->msg;
	    }

	    code = msg->line.status.code;
	    reason = msg->line.status.reason;

	    PJ_LOG(3,(THIS_FILE, "Call %d state changed to %s (%d %.*s)", 
		      call_id, call_info.state_text.ptr,
		      code, (int)reason.slen, reason.ptr));
	} else {
	    PJ_LOG(3,(THIS_FILE, "Call %d state changed to %s", 
		      call_id,
		      call_info.state_text.ptr));
	}

	if (current_call==PJSUA_INVALID_ID)
	    current_call = call_id;

    }
}


/**
 * Handler when there is incoming call.
 */
static void on_incoming_call(pjsua_acc_id acc_id, pjsua_call_id call_id,
			     pjsip_rx_data *rdata)
{
    pjsua_call_info call_info;

    PJ_UNUSED_ARG(acc_id);
    PJ_UNUSED_ARG(rdata);

    pjsua_call_get_info(call_id, &call_info);

    if (app_config.auto_answer > 0) {
	pjsua_call_answer(call_id, app_config.auto_answer, NULL, NULL);
    }

    if (app_config.auto_answer < 200) {
	PJ_LOG(3,(THIS_FILE,
		  "Incoming call for account %d!\n"
		  "From: %s\n"
		  "To: %s\n"
		  "Press a to answer or h to reject call",
		  acc_id,
		  call_info.remote_info.ptr,
		  call_info.local_info.ptr));
    }
}


/*
 * Handler when a transaction within a call has changed state.
 */
static void on_call_tsx_state(pjsua_call_id call_id,
			      pjsip_transaction *tsx,
			      pjsip_event *e)
{
    const pjsip_method info_method = 
    {
	PJSIP_OTHER_METHOD,
	{ "INFO", 4 }
    };

    if (pjsip_method_cmp(&tsx->method, &info_method)==0) {
	/*
	 * Handle INFO method.
	 */
	if (tsx->role == PJSIP_ROLE_UAC && 
	    (tsx->state == PJSIP_TSX_STATE_COMPLETED ||
	       tsx->state == PJSIP_TSX_STATE_TERMINATED &&
	       e->body.tsx_state.prev_state != PJSIP_TSX_STATE_COMPLETED)) 
	{
	    /* Status of outgoing INFO request */
	    if (tsx->status_code >= 200 && tsx->status_code < 300) {
		PJ_LOG(4,(THIS_FILE, 
			  "Call %d: DTMF sent successfully with INFO",
			  call_id));
	    } else if (tsx->status_code >= 300) {
		PJ_LOG(4,(THIS_FILE, 
			  "Call %d: Failed to send DTMF with INFO: %d/%.*s",
			  call_id,
		          tsx->status_code,
			  (int)tsx->status_text.slen,
			  tsx->status_text.ptr));
	    }
	} else if (tsx->role == PJSIP_ROLE_UAS &&
		   tsx->state == PJSIP_TSX_STATE_TRYING)
	{
	    /* Answer incoming INFO with 200/OK */
	    pjsip_rx_data *rdata;
	    pjsip_tx_data *tdata;
	    pj_status_t status;

	    rdata = e->body.tsx_state.src.rdata;

	    if (rdata->msg_info.msg->body) {
		status = pjsip_endpt_create_response(tsx->endpt, rdata,
						     200, NULL, &tdata);
		if (status == PJ_SUCCESS)
		    status = pjsip_tsx_send_msg(tsx, tdata);

		PJ_LOG(3,(THIS_FILE, "Call %d: incoming INFO:\n%.*s", 
			  call_id,
			  (int)rdata->msg_info.msg->body->len,
			  rdata->msg_info.msg->body->data));
	    } else {
		status = pjsip_endpt_create_response(tsx->endpt, rdata,
						     400, NULL, &tdata);
		if (status == PJ_SUCCESS)
		    status = pjsip_tsx_send_msg(tsx, tdata);
	    }
	}
    }
}


/*
 * Callback on media state changed event.
 * The action may connect the call to sound device, to file, or
 * to loop the call.
 */
static void on_call_media_state(pjsua_call_id call_id)
{
    pjsua_call_info call_info;

    pjsua_call_get_info(call_id, &call_info);

    if (call_info.media_status == PJSUA_CALL_MEDIA_ACTIVE) {
	pj_bool_t connect_sound = PJ_TRUE;

	/* Loopback sound, if desired */
	if (app_config.auto_loop) {
	    pjsua_conf_connect(call_info.conf_slot, call_info.conf_slot);
	    connect_sound = PJ_FALSE;

	    /* Automatically record conversation, if desired */
	    if (app_config.auto_rec && app_config.rec_port != PJSUA_INVALID_ID) {
		pjsua_conf_connect(call_info.conf_slot, app_config.rec_port);
	    }
	}

	/* Stream a file, if desired */
	if (app_config.auto_play && app_config.wav_port != PJSUA_INVALID_ID) {
	    pjsua_conf_connect(app_config.wav_port, call_info.conf_slot);
	    connect_sound = PJ_FALSE;
	}

	/* Put call in conference with other calls, if desired */
	if (app_config.auto_conf) {
	    pjsua_call_id call_ids[PJSUA_MAX_CALLS];
	    unsigned call_cnt=PJ_ARRAY_SIZE(call_ids);
	    unsigned i;

	    /* Get all calls, and establish media connection between
	     * this call and other calls.
	     */
	    pjsua_enum_calls(call_ids, &call_cnt);

	    for (i=0; i<call_cnt; ++i) {
		if (call_ids[i] == call_id)
		    continue;
		
		if (!pjsua_call_has_media(call_ids[i]))
		    continue;

		pjsua_conf_connect(call_info.conf_slot,
				   pjsua_call_get_conf_port(call_ids[i]));
		pjsua_conf_connect(pjsua_call_get_conf_port(call_ids[i]),
				   call_info.conf_slot);

		/* Automatically record conversation, if desired */
		if (app_config.auto_rec && app_config.rec_port != PJSUA_INVALID_ID) {
		    pjsua_conf_connect(pjsua_call_get_conf_port(call_ids[i]), 
				       app_config.rec_port);
		}

	    }

	    /* Also connect call to local sound device */
	    connect_sound = PJ_TRUE;
	}

	/* Otherwise connect to sound device */
	if (connect_sound) {
	    pjsua_conf_connect(call_info.conf_slot, 0);
	    pjsua_conf_connect(0, call_info.conf_slot);

	    /* Automatically record conversation, if desired */
	    if (app_config.auto_rec && app_config.rec_port != PJSUA_INVALID_ID) {
		pjsua_conf_connect(call_info.conf_slot, app_config.rec_port);
		pjsua_conf_connect(0, app_config.rec_port);
	    }
	}

	PJ_LOG(3,(THIS_FILE, "Media for call %d is active", call_id));

    } else if (call_info.media_status == PJSUA_CALL_MEDIA_LOCAL_HOLD) {
	PJ_LOG(3,(THIS_FILE, "Media for call %d is suspended (hold) by local",
		  call_id));
    } else if (call_info.media_status == PJSUA_CALL_MEDIA_REMOTE_HOLD) {
	PJ_LOG(3,(THIS_FILE, 
		  "Media for call %d is suspended (hold) by remote",
		  call_id));
    } else if (call_info.media_status == PJSUA_CALL_MEDIA_ERROR) {
	pj_str_t reason = pj_str("ICE negotiation failed");

	PJ_LOG(1,(THIS_FILE,
		  "Media has reported error, disconnecting call"));

	pjsua_call_hangup(call_id, 500, &reason, NULL);

    } else {
	PJ_LOG(3,(THIS_FILE, 
		  "Media for call %d is inactive",
		  call_id));
    }
}

/*
 * DTMF callback.
 */
static void call_on_dtmf_callback(pjsua_call_id call_id, int dtmf)
{
    PJ_LOG(3,(THIS_FILE, "Incoming DTMF on call %d: %c", call_id, dtmf));
}

/*
 * Handler registration status has changed.
 */
static void on_reg_state(pjsua_acc_id acc_id)
{
    PJ_UNUSED_ARG(acc_id);

    // Log already written.
}


/*
 * Handler on buddy state changed.
 */
static void on_buddy_state(pjsua_buddy_id buddy_id)
{
    pjsua_buddy_info info;
    pjsua_buddy_get_info(buddy_id, &info);

    PJ_LOG(3,(THIS_FILE, "%.*s status is %.*s",
	      (int)info.uri.slen,
	      info.uri.ptr,
	      (int)info.status_text.slen,
	      info.status_text.ptr));
}


/**
 * Incoming IM message (i.e. MESSAGE request)!
 */
static void on_pager(pjsua_call_id call_id, const pj_str_t *from, 
		     const pj_str_t *to, const pj_str_t *contact,
		     const pj_str_t *mime_type, const pj_str_t *text)
{
    /* Note: call index may be -1 */
    PJ_UNUSED_ARG(call_id);
    PJ_UNUSED_ARG(to);
    PJ_UNUSED_ARG(contact);
    PJ_UNUSED_ARG(mime_type);

    PJ_LOG(3,(THIS_FILE,"MESSAGE from %.*s: %.*s (%.*s)",
	      (int)from->slen, from->ptr,
	      (int)text->slen, text->ptr,
	      (int)mime_type->slen, mime_type->ptr));
}


/**
 * Received typing indication
 */
static void on_typing(pjsua_call_id call_id, const pj_str_t *from,
		      const pj_str_t *to, const pj_str_t *contact,
		      pj_bool_t is_typing)
{
    PJ_UNUSED_ARG(call_id);
    PJ_UNUSED_ARG(to);
    PJ_UNUSED_ARG(contact);

    PJ_LOG(3,(THIS_FILE, "IM indication: %.*s %s",
	      (int)from->slen, from->ptr,
	      (is_typing?"is typing..":"has stopped typing")));
}


/**
 * Call transfer request status.
 */
static void on_call_transfer_status(pjsua_call_id call_id,
				    int status_code,
				    const pj_str_t *status_text,
				    pj_bool_t final,
				    pj_bool_t *p_cont)
{
    PJ_LOG(3,(THIS_FILE, "Call %d: transfer status=%d (%.*s) %s",
	      call_id, status_code,
	      (int)status_text->slen, status_text->ptr,
	      (final ? "[final]" : "")));

    if (status_code/100 == 2) {
	PJ_LOG(3,(THIS_FILE, 
	          "Call %d: call transfered successfully, disconnecting call",
		  call_id));
	pjsua_call_hangup(call_id, PJSIP_SC_GONE, NULL, NULL);
	*p_cont = PJ_FALSE;
    }
}


/*
 * Notification that call is being replaced.
 */
static void on_call_replaced(pjsua_call_id old_call_id,
			     pjsua_call_id new_call_id)
{
    pjsua_call_info old_ci, new_ci;

    pjsua_call_get_info(old_call_id, &old_ci);
    pjsua_call_get_info(new_call_id, &new_ci);

    PJ_LOG(3,(THIS_FILE, "Call %d with %.*s is being replaced by "
			 "call %d with %.*s",
			 old_call_id, 
			 (int)old_ci.remote_info.slen, old_ci.remote_info.ptr,
			 new_call_id,
			 (int)new_ci.remote_info.slen, new_ci.remote_info.ptr));
}


/*
 * Print buddy list.
 */
static void print_buddy_list(void)
{
    pjsua_buddy_id ids[64];
    int i;
    unsigned count = PJ_ARRAY_SIZE(ids);

    puts("Buddy list:");

    pjsua_enum_buddies(ids, &count);

    if (count == 0)
	puts(" -none-");
    else {
	for (i=0; i<(int)count; ++i) {
	    pjsua_buddy_info info;

	    if (pjsua_buddy_get_info(ids[i], &info) != PJ_SUCCESS)
		continue;

	    printf(" [%2d] <%.*s>  %.*s\n", 
		    ids[i]+1, 
		    (int)info.status_text.slen,
		    info.status_text.ptr, 
		    (int)info.uri.slen,
		    info.uri.ptr);
	}
    }
    puts("");
}


/*
 * Print account status.
 */
static void print_acc_status(int acc_id)
{
    char buf[80];
    pjsua_acc_info info;

    pjsua_acc_get_info(acc_id, &info);

    if (!info.has_registration) {
	pj_ansi_snprintf(buf, sizeof(buf), "%.*s", 
			 (int)info.status_text.slen,
			 info.status_text.ptr);

    } else {
	pj_ansi_snprintf(buf, sizeof(buf),
			 "%d/%.*s (expires=%d)",
			 info.status,
			 (int)info.status_text.slen,
			 info.status_text.ptr,
			 info.expires);

    }

    printf(" %c[%2d] %.*s: %s\n", (acc_id==current_acc?'*':' '),
	   acc_id,  (int)info.acc_uri.slen, info.acc_uri.ptr, buf);
    printf("       Online status: %.*s\n", 
	(int)info.online_status_text.slen,
	info.online_status_text.ptr);
}


/*
 * Show a bit of help.
 */
static void keystroke_help(void)
{
    pjsua_acc_id acc_ids[16];
    unsigned count = PJ_ARRAY_SIZE(acc_ids);
    int i;

    printf(">>>>\n");

    pjsua_enum_accs(acc_ids, &count);

    printf("Account list:\n");
    for (i=0; i<(int)count; ++i)
	print_acc_status(acc_ids[i]);

    print_buddy_list();
    
    //puts("Commands:");
    puts("+=============================================================================+");
    puts("|       Call Commands:         |   Buddy, IM & Presence:  |     Account:      |");
    puts("|                              |                          |                   |");
    puts("|  m  Make new call            | +b  Add new buddy       .| +a  Add new accnt |");
    puts("|  M  Make multiple calls      | -b  Delete buddy         | -a  Delete accnt. |");
    puts("|  a  Answer call              |  i  Send IM              | !a  Modify accnt. |");
    puts("|  h  Hangup call  (ha=all)    |  s  Subscribe presence   | rr  (Re-)register |");
    puts("|  H  Hold call                |  u  Unsubscribe presence | ru  Unregister    |");
    puts("|  v  re-inVite (release hold) |  t  ToGgle Online status |  >  Cycle next ac.|");
    puts("|  U  send UPDATE              |  T  Set online status    |  <  Cycle prev ac.|");
    puts("| ],[ Select next/prev call    +--------------------------+-------------------+");
    puts("|  x  Xfer call                |      Media Commands:     |  Status & Config: |");
    puts("|  X  Xfer with Replaces       |                          |                   |");
    puts("|  #  Send RFC 2833 DTMF       | cl  List ports           |  d  Dump status   |");
    puts("|  *  Send DTMF with INFO      | cc  Connect port         | dd  Dump detailed |");
    puts("| dq  Dump curr. call quality  | cd  Disconnect port      | dc  Dump config   |");
    puts("|                              |  V  Adjust audio Volume  |  f  Save config   |");
    puts("|  S  Send arbitrary REQUEST   | Cp  Codec priorities     |  f  Save config   |");
    puts("+------------------------------+--------------------------+-------------------+");
    puts("|  q  QUIT                  sleep N: console sleep for N ms                   |");
    puts("+=============================================================================+");

    i = pjsua_call_get_count();
    printf("You have %d active call%s\n", i, (i>1?"s":""));

    if (current_call != PJSUA_INVALID_ID) {
	pjsua_call_info ci;
	if (pjsua_call_get_info(current_call, &ci)==PJ_SUCCESS)
	    printf("Current call id=%d to %.*s [%.*s]\n", current_call,
		   (int)ci.remote_info.slen, ci.remote_info.ptr,
		   (int)ci.state_text.slen, ci.state_text.ptr);
    }
}


/*
 * Input simple string
 */
static pj_bool_t simple_input(const char *title, char *buf, pj_size_t len)
{
    char *p;

    printf("%s (empty to cancel): ", title); fflush(stdout);
    fgets(buf, len, stdin);

    /* Remove trailing newlines. */
    for (p=buf; ; ++p) {
	if (*p=='\r' || *p=='\n') *p='\0';
	else if (!*p) break;
    }

    if (!*buf)
	return PJ_FALSE;
    
    return PJ_TRUE;
}


#define NO_NB	-2
struct input_result
{
    int	  nb_result;
    char *uri_result;
};


/*
 * Input URL.
 */
static void ui_input_url(const char *title, char *buf, int len, 
			 struct input_result *result)
{
    result->nb_result = NO_NB;
    result->uri_result = NULL;

    print_buddy_list();

    printf("Choices:\n"
	   "   0         For current dialog.\n"
	   "  -1         All %d buddies in buddy list\n"
	   "  [1 -%2d]    Select from buddy list\n"
	   "  URL        An URL\n"
	   "  <Enter>    Empty input (or 'q') to cancel\n"
	   , pjsua_get_buddy_count(), pjsua_get_buddy_count());
    printf("%s: ", title);

    fflush(stdout);
    fgets(buf, len, stdin);
    len = strlen(buf);

    /* Left trim */
    while (pj_isspace(*buf)) {
	++buf;
	--len;
    }

    /* Remove trailing newlines */
    while (len && (buf[len-1] == '\r' || buf[len-1] == '\n'))
	buf[--len] = '\0';

    if (len == 0 || buf[0]=='q')
	return;

    if (pj_isdigit(*buf) || *buf=='-') {
	
	int i;
	
	if (*buf=='-')
	    i = 1;
	else
	    i = 0;

	for (; i<len; ++i) {
	    if (!pj_isdigit(buf[i])) {
		puts("Invalid input");
		return;
	    }
	}

	result->nb_result = my_atoi(buf);

	if (result->nb_result >= 0 && 
	    result->nb_result <= (int)pjsua_get_buddy_count()) 
	{
	    return;
	}
	if (result->nb_result == -1)
	    return;

	puts("Invalid input");
	result->nb_result = NO_NB;
	return;

    } else {
	pj_status_t status;

	if ((status=pjsua_verify_sip_url(buf)) != PJ_SUCCESS) {
	    pjsua_perror(THIS_FILE, "Invalid URL", status);
	    return;
	}

	result->uri_result = buf;
    }
}

/*
 * List the ports in conference bridge
 */
static void conf_list(void)
{
    unsigned i, count;
    pjsua_conf_port_id id[PJSUA_MAX_CALLS];

    printf("Conference ports:\n");

    count = PJ_ARRAY_SIZE(id);
    pjsua_enum_conf_ports(id, &count);

    for (i=0; i<count; ++i) {
	char txlist[PJSUA_MAX_CALLS*4+10];
	unsigned j;
	pjsua_conf_port_info info;

	pjsua_conf_get_port_info(id[i], &info);

	txlist[0] = '\0';
	for (j=0; j<info.listener_cnt; ++j) {
	    char s[10];
	    pj_ansi_sprintf(s, "#%d ", info.listeners[j]);
	    pj_ansi_strcat(txlist, s);
	}
	printf("Port #%02d[%2dKHz/%dms] %20.*s  transmitting to: %s\n", 
	       info.slot_id, 
	       info.clock_rate/1000,
	       info.samples_per_frame * 1000 / info.clock_rate,
	       (int)info.name.slen, 
	       info.name.ptr,
	       txlist);

    }
    puts("");
}


/*
 * Send arbitrary request to remote host
 */
static void send_request(char *cstr_method, const pj_str_t *dst_uri)
{
    pj_str_t str_method;
    pjsip_method method;
    pjsip_tx_data *tdata;
    pjsip_endpoint *endpt;
    pj_status_t status;

    endpt = pjsua_get_pjsip_endpt();

    str_method = pj_str(cstr_method);
    pjsip_method_init_np(&method, &str_method);

    status = pjsua_acc_create_request(current_acc, &method, dst_uri, &tdata);

    status = pjsip_endpt_send_request(endpt, tdata, -1, NULL, NULL);
    if (status != PJ_SUCCESS) {
	pjsua_perror(THIS_FILE, "Unable to send request", status);
	return;
    }
}


/*
 * Change extended online status.
 */
static void change_online_status(void)
{
    char menuin[32];
    pj_bool_t online_status;
    pjrpid_element elem;
    int i, choice;

    enum {
	AVAILABLE, BUSY, OTP, IDLE, AWAY, BRB, OFFLINE, OPT_MAX
    };

    struct opt {
	int id;
	char *name;
    } opts[] = {
	{ AVAILABLE, "Available" },
	{ BUSY, "Busy"},
	{ OTP, "On the phone"},
	{ IDLE, "Idle"},
	{ AWAY, "Away"},
	{ BRB, "Be right back"},
	{ OFFLINE, "Offline"}
    };

    printf("\n"
	   "Choices:\n");
    for (i=0; i<PJ_ARRAY_SIZE(opts); ++i) {
	printf("  %d  %s\n", opts[i].id+1, opts[i].name);
    }

    if (!simple_input("Select status", menuin, sizeof(menuin)))
	return;

    choice = atoi(menuin) - 1;
    if (choice < 0 || choice >= OPT_MAX) {
	puts("Invalid selection");
	return;
    }

    pj_bzero(&elem, sizeof(elem));
    elem.type = PJRPID_ELEMENT_TYPE_PERSON;

    online_status = PJ_TRUE;

    switch (choice) {
    case AVAILABLE:
	break;
    case BUSY:
	elem.activity = PJRPID_ACTIVITY_BUSY;
	elem.note = pj_str("Busy");
	break;
    case OTP:
	elem.activity = PJRPID_ACTIVITY_BUSY;
	elem.note = pj_str("On the phone");
	break;
    case IDLE:
	elem.activity = PJRPID_ACTIVITY_UNKNOWN;
	elem.note = pj_str("Idle");
	break;
    case AWAY:
	elem.activity = PJRPID_ACTIVITY_AWAY;
	elem.note = pj_str("Away");
	break;
    case BRB:
	elem.activity = PJRPID_ACTIVITY_UNKNOWN;
	elem.note = pj_str("Be right back");
	break;
    case OFFLINE:
	online_status = PJ_FALSE;
	break;
    }

    pjsua_acc_set_online_status2(current_acc, online_status, &elem);
}


/*
 * Change codec priorities.
 */
static void manage_codec_prio(void)
{
    pjsua_codec_info c[32];
    unsigned i, count = PJ_ARRAY_SIZE(c);
    char input[32];
    char *codec, *prio;
    pj_str_t id;
    int new_prio;
    pj_status_t status;

    printf("List of codecs:\n");

    pjsua_enum_codecs(c, &count);
    for (i=0; i<count; ++i) {
	printf("  %d\t%.*s\n", c[i].priority, (int)c[i].codec_id.slen,
			       c[i].codec_id.ptr);
    }

    puts("");
    puts("Enter codec name and its new priority (e.g. \"speex/16000 200\"), empty to cancel:");

    printf("Codec name and priority: ");
    fgets(input, sizeof(input), stdin);
    if (input[0]=='\r' || input[0]=='\n') {
	puts("Done");
	return;
    }

    codec = strtok(input, " \t\r\n");
    prio = strtok(NULL, " \r\n");

    if (!codec || !prio) {
	puts("Invalid input");
	return;
    }

    new_prio = atoi(prio);
    if (new_prio < 0) 
	new_prio = 0;
    else if (new_prio > PJMEDIA_CODEC_PRIO_HIGHEST) 
	new_prio = PJMEDIA_CODEC_PRIO_HIGHEST;

    status = pjsua_codec_set_priority(pj_cstr(&id, codec), 
				      (pj_uint8_t)new_prio);
    if (status != PJ_SUCCESS)
	pjsua_perror(THIS_FILE, "Error setting codec priority", status);
}


/*
 * Main "user interface" loop.
 */
void console_app_main(const pj_str_t *uri_to_call)
{
    char menuin[32];
    char buf[128];
    char text[128];
    int i, count;
    char *uri;
    pj_str_t tmp;
    struct input_result result;
    pjsua_call_info call_info;
    pjsua_acc_info acc_info;


    /* If user specifies URI to call, then call the URI */
    if (uri_to_call->slen) {
	pjsua_call_make_call( current_acc, uri_to_call, 0, NULL, NULL, NULL);
    }

    keystroke_help();

    for (;;) {

	printf(">>> ");
	fflush(stdout);

	if (fgets(menuin, sizeof(menuin), stdin) == NULL) {
	    /* 
	     * Be friendly to users who redirect commands into
	     * program, when file ends, resume with kbd.
	     * If exit is desired end script with q for quit
	     */
 	    /* Reopen stdin/stdout/stderr to /dev/console */
#if defined(PJ_WIN32) && PJ_WIN32!=0
	    if (freopen ("CONIN$", "r", stdin) == NULL) {
#else
	    if (1) {
#endif
		puts("Cannot switch back to console from file redirection");
		menuin[0] = 'q';
		menuin[1] = '\0';
	    } else {
		puts("Switched back to console from file redirection");
		continue;
	    }
	}

	switch (menuin[0]) {

	case 'm':
	    /* Make call! : */
	    printf("(You currently have %d calls)\n", 
		     pjsua_call_get_count());
	    
	    uri = NULL;
	    ui_input_url("Make call", buf, sizeof(buf), &result);
	    if (result.nb_result != NO_NB) {

		if (result.nb_result == -1 || result.nb_result == 0) {
		    puts("You can't do that with make call!");
		    continue;
		} else {
		    pjsua_buddy_info binfo;
		    pjsua_buddy_get_info(result.nb_result-1, &binfo);
		    uri = binfo.uri.ptr;
		}

	    } else if (result.uri_result) {
		uri = result.uri_result;
	    }
	    
	    tmp = pj_str(uri);
	    pjsua_call_make_call( current_acc, &tmp, 0, NULL, NULL, NULL);
	    break;

	case 'M':
	    /* Make multiple calls! : */
	    printf("(You currently have %d calls)\n", 
		   pjsua_call_get_count());
	    
	    if (!simple_input("Number of calls", menuin, sizeof(menuin)))
		continue;

	    count = my_atoi(menuin);
	    if (count < 1)
		continue;

	    ui_input_url("Make call", buf, sizeof(buf), &result);
	    if (result.nb_result != NO_NB) {
		pjsua_buddy_info binfo;
		if (result.nb_result == -1 || result.nb_result == 0) {
		    puts("You can't do that with make call!");
		    continue;
		}
		pjsua_buddy_get_info(result.nb_result-1, &binfo);
		uri = binfo.uri.ptr;
	    } else {
		uri =  result.uri_result;
	    }

	    for (i=0; i<my_atoi(menuin); ++i) {
		pj_status_t status;
	    
		tmp = pj_str(uri);
		status = pjsua_call_make_call(current_acc, &tmp, 0, NULL,
					      NULL, NULL);
		if (status != PJ_SUCCESS)
		    break;
	    }
	    break;

	case 'i':
	    /* Send instant messaeg */

	    /* i is for call index to send message, if any */
	    i = -1;
    
	    /* Make compiler happy. */
	    uri = NULL;

	    /* Input destination. */
	    ui_input_url("Send IM to", buf, sizeof(buf), &result);
	    if (result.nb_result != NO_NB) {

		if (result.nb_result == -1) {
		    puts("You can't send broadcast IM like that!");
		    continue;

		} else if (result.nb_result == 0) {
    
		    i = current_call;

		} else {
		    pjsua_buddy_info binfo;
		    pjsua_buddy_get_info(result.nb_result-1, &binfo);
		    uri = binfo.uri.ptr;
		}

	    } else if (result.uri_result) {
		uri = result.uri_result;
	    }
	    

	    /* Send typing indication. */
	    if (i != -1)
		pjsua_call_send_typing_ind(i, PJ_TRUE, NULL);
	    else {
		pj_str_t tmp_uri = pj_str(uri);
		pjsua_im_typing(current_acc, &tmp_uri, PJ_TRUE, NULL);
	    }

	    /* Input the IM . */
	    if (!simple_input("Message", text, sizeof(text))) {
		/*
		 * Cancelled.
		 * Send typing notification too, saying we're not typing.
		 */
		if (i != -1)
		    pjsua_call_send_typing_ind(i, PJ_FALSE, NULL);
		else {
		    pj_str_t tmp_uri = pj_str(uri);
		    pjsua_im_typing(current_acc, &tmp_uri, PJ_FALSE, NULL);
		}
		continue;
	    }

	    tmp = pj_str(text);

	    /* Send the IM */
	    if (i != -1)
		pjsua_call_send_im(i, NULL, &tmp, NULL, NULL);
	    else {
		pj_str_t tmp_uri = pj_str(uri);
		pjsua_im_send(current_acc, &tmp_uri, NULL, &tmp, NULL, NULL);
	    }

	    break;

	case 'a':

	    if (current_call != -1) {
		pjsua_call_get_info(current_call, &call_info);
	    } else {
		/* Make compiler happy */
		call_info.role = PJSIP_ROLE_UAC;
		call_info.state = PJSIP_INV_STATE_DISCONNECTED;
	    }

	    if (current_call == -1 || 
		call_info.role != PJSIP_ROLE_UAS ||
		call_info.state >= PJSIP_INV_STATE_CONNECTING)
	    {
		puts("No pending incoming call");
		fflush(stdout);
		continue;

	    } else {
		int st_code;
		char contact[120];
		pj_str_t hname = { "Contact", 7 };
		pj_str_t hvalue;
		pjsip_generic_string_hdr hcontact;
		pjsua_msg_data msg_data;

		if (!simple_input("Answer with code (100-699)", buf, sizeof(buf)))
		    continue;
		
		st_code = my_atoi(buf);
		if (st_code < 100)
		    continue;

		pjsua_msg_data_init(&msg_data);

		if (st_code/100 == 3) {
		    if (!simple_input("Enter URL to be put in Contact", 
				      contact, sizeof(contact)))
			continue;
		    hvalue = pj_str(contact);
		    pjsip_generic_string_hdr_init2(&hcontact, &hname, &hvalue);

		    pj_list_push_back(&msg_data.hdr_list, &hcontact);
		}

		/*
		 * Must check again!
		 * Call may have been disconnected while we're waiting for 
		 * keyboard input.
		 */
		if (current_call == -1) {
		    puts("Call has been disconnected");
		    fflush(stdout);
		    continue;
		}

		pjsua_call_answer(current_call, st_code, NULL, &msg_data);
	    }

	    break;


	case 'h':

	    if (current_call == -1) {
		puts("No current call");
		fflush(stdout);
		continue;

	    } else if (menuin[1] == 'a') {
		
		/* Hangup all calls */
		pjsua_call_hangup_all();

	    } else {

		/* Hangup current calls */
		pjsua_call_hangup(current_call, 0, NULL, NULL);
	    }
	    break;

	case ']':
	case '[':
	    /*
	     * Cycle next/prev dialog.
	     */
	    if (menuin[0] == ']') {
		find_next_call();

	    } else {
		find_prev_call();
	    }

	    if (current_call != -1) {
		
		pjsua_call_get_info(current_call, &call_info);
		PJ_LOG(3,(THIS_FILE,"Current dialog: %.*s", 
			  (int)call_info.remote_info.slen, 
			  call_info.remote_info.ptr));

	    } else {
		PJ_LOG(3,(THIS_FILE,"No current dialog"));
	    }
	    break;


	case '>':
	case '<':
	    if (!simple_input("Enter account ID to select", buf, sizeof(buf)))
		break;

	    i = my_atoi(buf);
	    if (pjsua_acc_is_valid(i)) {
		pjsua_acc_set_default(i);
		PJ_LOG(3,(THIS_FILE, "Current account changed to %d", i));
	    } else {
		PJ_LOG(3,(THIS_FILE, "Invalid account id %d", i));
	    }
	    break;


	case '+':
	    if (menuin[1] == 'b') {
	    
		pjsua_buddy_config buddy_cfg;
		pjsua_buddy_id buddy_id;
		pj_status_t status;

		if (!simple_input("Enter buddy's URI:", buf, sizeof(buf)))
		    break;

		if (pjsua_verify_sip_url(buf) != PJ_SUCCESS) {
		    printf("Invalid SIP URI '%s'\n", buf);
		    break;
		}

		pj_bzero(&buddy_cfg, sizeof(pjsua_buddy_config));

		buddy_cfg.uri = pj_str(buf);
		buddy_cfg.subscribe = PJ_TRUE;

		status = pjsua_buddy_add(&buddy_cfg, &buddy_id);
		if (status == PJ_SUCCESS) {
		    printf("New buddy '%s' added at index %d\n",
			   buf, buddy_id+1);
		}

	    } else if (menuin[1] == 'a') {

		char id[80], registrar[80], realm[80], uname[80], passwd[30];
		pjsua_acc_config acc_cfg;
		pj_status_t status;

		if (!simple_input("Your SIP URL:", id, sizeof(id)))
		    break;
		if (!simple_input("URL of the registrar:", registrar, sizeof(registrar)))
		    break;
		if (!simple_input("Auth Realm:", realm, sizeof(realm)))
		    break;
		if (!simple_input("Auth Username:", uname, sizeof(uname)))
		    break;
		if (!simple_input("Auth Password:", passwd, sizeof(passwd)))
		    break;

		pjsua_acc_config_default(&acc_cfg);
		acc_cfg.id = pj_str(id);
		acc_cfg.reg_uri = pj_str(registrar);
		acc_cfg.cred_count = 1;
		acc_cfg.cred_info[0].scheme = pj_str("digest");
		acc_cfg.cred_info[0].realm = pj_str(realm);
		acc_cfg.cred_info[0].username = pj_str(uname);
		acc_cfg.cred_info[0].data_type = 0;
		acc_cfg.cred_info[0].data = pj_str(passwd);

		status = pjsua_acc_add(&acc_cfg, PJ_TRUE, NULL);
		if (status != PJ_SUCCESS) {
		    pjsua_perror(THIS_FILE, "Error adding new account", status);
		}

	    } else {
		printf("Invalid input %s\n", menuin);
	    }
	    break;

	case '-':
	    if (menuin[1] == 'b') {
		if (!simple_input("Enter buddy ID to delete",buf,sizeof(buf)))
		    break;

		i = my_atoi(buf) - 1;

		if (!pjsua_buddy_is_valid(i)) {
		    printf("Invalid buddy id %d\n", i);
		} else {
		    pjsua_buddy_del(i);
		    printf("Buddy %d deleted\n", i);
		}

	    } else if (menuin[1] == 'a') {

		if (!simple_input("Enter account ID to delete",buf,sizeof(buf)))
		    break;

		i = my_atoi(buf);

		if (!pjsua_acc_is_valid(i)) {
		    printf("Invalid account id %d\n", i);
		} else {
		    pjsua_acc_del(i);
		    printf("Account %d deleted\n", i);
		}

	    } else {
		printf("Invalid input %s\n", menuin);
	    }
	    break;

	case 'H':
	    /*
	     * Hold call.
	     */
	    if (current_call != -1) {
		
		pjsua_call_set_hold(current_call, NULL);

	    } else {
		PJ_LOG(3,(THIS_FILE, "No current call"));
	    }
	    break;

	case 'v':
	    /*
	     * Send re-INVITE (to release hold, etc).
	     */
	    if (current_call != -1) {
		
		pjsua_call_reinvite(current_call, PJ_TRUE, NULL);

	    } else {
		PJ_LOG(3,(THIS_FILE, "No current call"));
	    }
	    break;

	case 'U':
	    /*
	     * Send UPDATE
	     */
	    if (current_call != -1) {
		
		pjsua_call_update(current_call, 0, NULL);

	    } else {
		PJ_LOG(3,(THIS_FILE, "No current call"));
	    }
	    break;

	case 'C':
	    if (menuin[1] == 'p') {
		manage_codec_prio();
	    }
	    break;

	case 'x':
	    /*
	     * Transfer call.
	     */
	    if (current_call == -1) {
		
		PJ_LOG(3,(THIS_FILE, "No current call"));

	    } else {
		int call = current_call;
		pjsua_msg_data msg_data;
		pjsip_generic_string_hdr refer_sub;
		pj_str_t STR_REFER_SUB = { "Refer-Sub", 9 };
		pj_str_t STR_FALSE = { "false", 5 };
		pjsua_call_info ci;

		pjsua_call_get_info(current_call, &ci);
		printf("Transfering current call [%d] %.*s\n",
		       current_call,
		       (int)ci.remote_info.slen, ci.remote_info.ptr);

		ui_input_url("Transfer to URL", buf, sizeof(buf), &result);

		/* Check if call is still there. */

		if (call != current_call) {
		    puts("Call has been disconnected");
		    continue;
		}

		pjsua_msg_data_init(&msg_data);
		if (app_config.no_refersub) {
		    /* Add Refer-Sub: false in outgoing REFER request */
		    pjsip_generic_string_hdr_init2(&refer_sub, &STR_REFER_SUB,
						   &STR_FALSE);
		    pj_list_push_back(&msg_data.hdr_list, &refer_sub);
		}
		if (result.nb_result != NO_NB) {
		    if (result.nb_result == -1 || result.nb_result == 0)
			puts("You can't do that with transfer call!");
		    else {
			pjsua_buddy_info binfo;
			pjsua_buddy_get_info(result.nb_result-1, &binfo);
			pjsua_call_xfer( current_call, &binfo.uri, &msg_data);
		    }

		} else if (result.uri_result) {
		    pj_str_t tmp;
		    tmp = pj_str(result.uri_result);
		    pjsua_call_xfer( current_call, &tmp, &msg_data);
		}
	    }
	    break;

	case 'X':
	    /*
	     * Transfer call with replaces.
	     */
	    if (current_call == -1) {
		
		PJ_LOG(3,(THIS_FILE, "No current call"));

	    } else {
		int call = current_call;
		int dst_call;
		pjsua_msg_data msg_data;
		pjsip_generic_string_hdr refer_sub;
		pj_str_t STR_REFER_SUB = { "Refer-Sub", 9 };
		pj_str_t STR_FALSE = { "false", 5 };
		pjsua_call_id ids[PJSUA_MAX_CALLS];
		pjsua_call_info ci;
		unsigned i, count;

		count = PJ_ARRAY_SIZE(ids);
		pjsua_enum_calls(ids, &count);

		if (count <= 1) {
		    puts("There are no other calls");
		    continue;
		}

		pjsua_call_get_info(current_call, &ci);
		printf("Transfer call [%d] %.*s to one of the following:\n",
		       current_call,
		       (int)ci.remote_info.slen, ci.remote_info.ptr);

		for (i=0; i<count; ++i) {
		    pjsua_call_info call_info;

		    if (ids[i] == call)
			continue;

		    pjsua_call_get_info(ids[i], &call_info);
		    printf("%d  %.*s [%.*s]\n",
			   ids[i],
			   (int)call_info.remote_info.slen,
			   call_info.remote_info.ptr,
			   (int)call_info.state_text.slen,
			   call_info.state_text.ptr);
		}

		if (!simple_input("Enter call number to be replaced", 
			          buf, sizeof(buf)))
		    continue;

		dst_call = my_atoi(buf);

		/* Check if call is still there. */

		if (call != current_call) {
		    puts("Call has been disconnected");
		    continue;
		}

		/* Check that destination call is valid. */
		if (dst_call == call) {
		    puts("Destination call number must not be the same "
			 "as the call being transfered");
		    continue;
		}
		if (dst_call >= PJSUA_MAX_CALLS) {
		    puts("Invalid destination call number");
		    continue;
		}
		if (!pjsua_call_is_active(dst_call)) {
		    puts("Invalid destination call number");
		    continue;
		}

		pjsua_msg_data_init(&msg_data);
		if (app_config.no_refersub) {
		    /* Add Refer-Sub: false in outgoing REFER request */
		    pjsip_generic_string_hdr_init2(&refer_sub, &STR_REFER_SUB,
						   &STR_FALSE);
		    pj_list_push_back(&msg_data.hdr_list, &refer_sub);
		}

		pjsua_call_xfer_replaces(call, dst_call, 0, &msg_data);
	    }
	    break;

	case '#':
	    /*
	     * Send DTMF strings.
	     */
	    if (current_call == -1) {
		
		PJ_LOG(3,(THIS_FILE, "No current call"));

	    } else if (!pjsua_call_has_media(current_call)) {

		PJ_LOG(3,(THIS_FILE, "Media is not established yet!"));

	    } else {
		pj_str_t digits;
		int call = current_call;
		pj_status_t status;

		if (!simple_input("DTMF strings to send (0-9*#A-B)", buf, 
				  sizeof(buf)))
		{
			break;
		}

		if (call != current_call) {
		    puts("Call has been disconnected");
		    continue;
		}

		digits = pj_str(buf);
		status = pjsua_call_dial_dtmf(current_call, &digits);
		if (status != PJ_SUCCESS) {
		    pjsua_perror(THIS_FILE, "Unable to send DTMF", status);
		} else {
		    puts("DTMF digits enqueued for transmission");
		}
	    }
	    break;

	case '*':
	    /* Send DTMF with INFO */
	    if (current_call == -1) {
		
		PJ_LOG(3,(THIS_FILE, "No current call"));

	    } else {
		const pj_str_t SIP_INFO = pj_str("INFO");
		pj_str_t digits;
		int call = current_call;
		int i;
		pj_status_t status;

		if (!simple_input("DTMF strings to send (0-9*#A-B)", buf, 
				  sizeof(buf)))
		{
			break;
		}

		if (call != current_call) {
		    puts("Call has been disconnected");
		    continue;
		}

		digits = pj_str(buf);
		for (i=0; i<digits.slen; ++i) {
		    pjsua_msg_data msg_data;
		    char body[80];

		    pjsua_msg_data_init(&msg_data);
		    msg_data.content_type = pj_str("application/dtmf-relay");
		    
		    pj_ansi_snprintf(body, sizeof(body),
				     "Signal=%c\r\n"
				     "Duration=160",
				     buf[i]);
		    msg_data.msg_body = pj_str(body);

		    status = pjsua_call_send_request(current_call, &SIP_INFO, 
						     &msg_data);
		    if (status != PJ_SUCCESS) {
			break;
		    }
		}
	    }
	    break;

	case 'S':
	    /*
	     * Send arbitrary request
	     */
	    if (pjsua_acc_get_count() == 0) {
		puts("Sorry, need at least one account configured");
		break;
	    }

	    puts("Send arbitrary request to remote host");

	    /* Input METHOD */
	    if (!simple_input("Request method:",text,sizeof(text)))
		break;

	    /* Input destination URI */
	    uri = NULL;
	    ui_input_url("Destination URI", buf, sizeof(buf), &result);
	    if (result.nb_result != NO_NB) {

		if (result.nb_result == -1 || result.nb_result == 0) {
		    puts("Sorry you can't do that!");
		    continue;
		} else {
		    pjsua_buddy_info binfo;
		    pjsua_buddy_get_info(result.nb_result-1, &binfo);
		    uri = binfo.uri.ptr;
		}

	    } else if (result.uri_result) {
		uri = result.uri_result;
	    }
	    
	    tmp = pj_str(uri);

	    send_request(text, &tmp);
	    break;

	case 's':
	    if (pj_ansi_strnicmp(menuin, "sleep", 5)==0) {
		pj_str_t tmp;
		int delay;

		tmp.ptr = menuin+6;
		tmp.slen = pj_ansi_strlen(menuin)-7;

		if (tmp.slen < 1) {
		    puts("Usage: sleep MSEC");
		    break;
		}

		delay = pj_strtoul(&tmp);
		if (delay < 0) delay = 0;
		pj_thread_sleep(delay);
		break;
	    }
	    /* Continue below */

	case 'u':
	    /*
	     * Subscribe/unsubscribe presence.
	     */
	    ui_input_url("(un)Subscribe presence of", buf, sizeof(buf), &result);
	    if (result.nb_result != NO_NB) {
		if (result.nb_result == -1) {
		    int i, count;
		    count = pjsua_get_buddy_count();
		    for (i=0; i<count; ++i)
			pjsua_buddy_subscribe_pres(i, menuin[0]=='s');
		} else if (result.nb_result == 0) {
		    puts("Sorry, can only subscribe to buddy's presence, "
			 "not from existing call");
		} else {
		    pjsua_buddy_subscribe_pres(result.nb_result-1, (menuin[0]=='s'));
		}

	    } else if (result.uri_result) {
		puts("Sorry, can only subscribe to buddy's presence, "
		     "not arbitrary URL (for now)");
	    }

	    break;

	case 'r':
	    switch (menuin[1]) {
	    case 'r':
		/*
		 * Re-Register.
		 */
		pjsua_acc_set_registration(current_acc, PJ_TRUE);
		break;
	    case 'u':
		/*
		 * Unregister
		 */
		pjsua_acc_set_registration(current_acc, PJ_FALSE);
		break;
	    }
	    break;
	    
	case 't':
	    pjsua_acc_get_info(current_acc, &acc_info);
	    acc_info.online_status = !acc_info.online_status;
	    pjsua_acc_set_online_status(current_acc, acc_info.online_status);
	    printf("Setting %s online status to %s\n",
		   acc_info.acc_uri.ptr,
		   (acc_info.online_status?"online":"offline"));
	    break;

	case 'T':
	    change_online_status();
	    break;

	case 'c':
	    switch (menuin[1]) {
	    case 'l':
		conf_list();
		break;
	    case 'c':
	    case 'd':
		{
		    char tmp[10], src_port[10], dst_port[10];
		    pj_status_t status;
		    int cnt;
		    const char *src_title, *dst_title;

		    cnt = sscanf(menuin, "%s %s %s", tmp, src_port, dst_port);

		    if (cnt != 3) {
			conf_list();

			src_title = (menuin[1]=='c'?
				     "Connect src port #":
				     "Disconnect src port #");
			dst_title = (menuin[1]=='c'?
				     "To dst port #":
				     "From dst port #");

			if (!simple_input(src_title, src_port, sizeof(src_port)))
			    break;

			if (!simple_input(dst_title, dst_port, sizeof(dst_port)))
			    break;
		    }

		    if (menuin[1]=='c') {
			status = pjsua_conf_connect(my_atoi(src_port), 
						    my_atoi(dst_port));
		    } else {
			status = pjsua_conf_disconnect(my_atoi(src_port), 
						       my_atoi(dst_port));
		    }
		    if (status == PJ_SUCCESS) {
			puts("Success");
		    } else {
			puts("ERROR!!");
		    }
		}
		break;
	    }
	    break;

	case 'V':
	    /* Adjust audio volume */
	    sprintf(buf, "Adjust mic level: [%4.1fx] ", app_config.mic_level);
	    if (simple_input(buf,text,sizeof(text))) {
		char *err;
		app_config.mic_level = (float)strtod(text, &err);
		pjsua_conf_adjust_rx_level(0, app_config.mic_level);
	    }
	    sprintf(buf, "Adjust speaker level: [%4.1fx] ", 
		    app_config.speaker_level);
	    if (simple_input(buf,text,sizeof(text))) {
		char *err;
		app_config.speaker_level = (float)strtod(text, &err);
		pjsua_conf_adjust_tx_level(0, app_config.speaker_level);
	    }

	    break;

	case 'd':
	    if (menuin[1] == 'c') {
		char settings[2000];
		int len;

		len = write_settings(&app_config, settings, sizeof(settings));
		if (len < 1)
		    PJ_LOG(3,(THIS_FILE, "Error: not enough buffer"));
		else
		    PJ_LOG(3,(THIS_FILE, 
			      "Dumping configuration (%d bytes):\n%s\n",
			      len, settings));

	    } else if (menuin[1] == 'q') {

		if (current_call != PJSUA_INVALID_ID) {
		    char buf[1024];
		    pjsua_call_dump(current_call, PJ_TRUE, buf, 
				    sizeof(buf), "  ");
		    PJ_LOG(3,(THIS_FILE, "\n%s", buf));
		} else {
		    PJ_LOG(3,(THIS_FILE, "No current call"));
		}

	    } else {
		app_dump(menuin[1]=='d');
	    }
	    break;


	case 'f':
	    if (simple_input("Enter output filename", buf, sizeof(buf))) {
		char settings[2000];
		int len;

		len = write_settings(&app_config, settings, sizeof(settings));
		if (len < 1)
		    PJ_LOG(3,(THIS_FILE, "Error: not enough buffer"));
		else {
		    pj_oshandle_t fd;
		    pj_status_t status;

		    status = pj_file_open(app_config.pool, buf, 
					  PJ_O_WRONLY, &fd);
		    if (status != PJ_SUCCESS) {
			pjsua_perror(THIS_FILE, "Unable to open file", status);
		    } else {
			pj_ssize_t size = len;
			pj_file_write(fd, settings, &size);
			pj_file_close(fd);

			printf("Settings successfully written to '%s'\n", buf);
		    }
		}
		
	    }
	    break;


	case 'q':
	    goto on_exit;


	default:
	    if (menuin[0] != '\n' && menuin[0] != '\r') {
		printf("Invalid input %s", menuin);
	    }
	    keystroke_help();
	    break;
	}
    }

on_exit:
    ;
}


/*****************************************************************************
 * Public API
 */

pj_status_t app_init(int argc, char *argv[])
{
    pjsua_transport_id transport_id = -1;
    pjsua_transport_config tcp_cfg;
    unsigned i;
    pj_status_t status;

    /* Create pjsua */
    status = pjsua_create();
    if (status != PJ_SUCCESS)
	return status;

    /* Create pool for application */
    app_config.pool = pjsua_pool_create("pjsua", 1000, 1000);

    /* Initialize default config */
    default_config(&app_config);
    
    /* Parse the arguments */
    status = parse_args(argc, argv, &app_config, &uri_arg);
    if (status != PJ_SUCCESS)
	return status;

    /* Initialize application callbacks */
    app_config.cfg.cb.on_call_state = &on_call_state;
    app_config.cfg.cb.on_call_media_state = &on_call_media_state;
    app_config.cfg.cb.on_incoming_call = &on_incoming_call;
    app_config.cfg.cb.on_call_tsx_state = &on_call_tsx_state;
    app_config.cfg.cb.on_dtmf_digit = &call_on_dtmf_callback;
    app_config.cfg.cb.on_reg_state = &on_reg_state;
    app_config.cfg.cb.on_buddy_state = &on_buddy_state;
    app_config.cfg.cb.on_pager = &on_pager;
    app_config.cfg.cb.on_typing = &on_typing;
    app_config.cfg.cb.on_call_transfer_status = &on_call_transfer_status;
    app_config.cfg.cb.on_call_replaced = &on_call_replaced;

    /* Initialize pjsua */
    status = pjsua_init(&app_config.cfg, &app_config.log_cfg,
			&app_config.media_cfg);
    if (status != PJ_SUCCESS)
	return status;

#ifdef STEREO_DEMO
    stereo_demo();
#endif

    /* Initialize calls data */
    for (i=0; i<PJ_ARRAY_SIZE(app_config.call_data); ++i) {
	app_config.call_data[i].timer.id = PJSUA_INVALID_ID;
	app_config.call_data[i].timer.cb = &call_timeout_callback;
    }

    /* Optionally registers WAV file */
    for (i=0; i<app_config.wav_count; ++i) {
	pjsua_player_id wav_id;

	status = pjsua_player_create(&app_config.wav_files[i], 0, 
				     &wav_id);
	if (status != PJ_SUCCESS)
	    goto on_error;

	if (app_config.wav_id == PJSUA_INVALID_ID) {
	    app_config.wav_id = wav_id;
	    app_config.wav_port = pjsua_player_get_conf_port(app_config.wav_id);
	}
    }

    /* Optionally registers tone players */
    for (i=0; i<app_config.tone_count; ++i) {
	pjmedia_port *tport;
	char name[80];
	pj_str_t label;
	pj_status_t status;

	pj_ansi_snprintf(name, sizeof(name), "tone-%d,%d",
			 app_config.tones[i].freq1, 
			 app_config.tones[i].freq2);
	label = pj_str(name);
	status = pjmedia_tonegen_create2(app_config.pool, &label,
					 8000, 1, 160, 16, 
					 PJMEDIA_TONEGEN_LOOP,  &tport);
	if (status != PJ_SUCCESS) {
	    pjsua_perror(THIS_FILE, "Unable to create tone generator", status);
	    goto on_error;
	}

	status = pjsua_conf_add_port(app_config.pool, tport, 
				     &app_config.tone_slots[i]);
	pj_assert(status == PJ_SUCCESS);

	status = pjmedia_tonegen_play(tport, 1, &app_config.tones[i], 0);
	pj_assert(status == PJ_SUCCESS);
    }

    /* Optionally create recorder file, if any. */
    if (app_config.rec_file.slen) {
	status = pjsua_recorder_create(&app_config.rec_file, 0, NULL, 0, 0,
				       &app_config.rec_id);
	if (status != PJ_SUCCESS)
	    goto on_error;

	app_config.rec_port = pjsua_recorder_get_conf_port(app_config.rec_id);
    }

    pj_memcpy(&tcp_cfg, &app_config.udp_cfg, sizeof(tcp_cfg));

    /* Add UDP transport unless it's disabled. */
    if (!app_config.no_udp) {
	pjsua_acc_id aid;

	status = pjsua_transport_create(PJSIP_TRANSPORT_UDP,
					&app_config.udp_cfg, 
					&transport_id);
	if (status != PJ_SUCCESS)
	    goto on_error;

	/* Add local account */
	pjsua_acc_add_local(transport_id, PJ_TRUE, &aid);
	//pjsua_acc_set_transport(aid, transport_id);
	pjsua_acc_set_online_status(current_acc, PJ_TRUE);

	if (app_config.udp_cfg.port == 0) {
	    pjsua_transport_info ti;
	    pj_sockaddr_in *a;

	    pjsua_transport_get_info(transport_id, &ti);
	    a = (pj_sockaddr_in*)&ti.local_addr;

	    tcp_cfg.port = pj_ntohs(a->sin_port);
	}
    }

    /* Add TCP transport unless it's disabled */
    if (!app_config.no_tcp) {
	status = pjsua_transport_create(PJSIP_TRANSPORT_TCP,
					&tcp_cfg, 
					&transport_id);
	if (status != PJ_SUCCESS)
	    goto on_error;

	/* Add local account */
	pjsua_acc_add_local(transport_id, PJ_TRUE, NULL);
	pjsua_acc_set_online_status(current_acc, PJ_TRUE);

    }


#if defined(PJSIP_HAS_TLS_TRANSPORT) && PJSIP_HAS_TLS_TRANSPORT!=0
    /* Add TLS transport when application wants one */
    if (app_config.use_tls) {

	pjsua_acc_id acc_id;

	/* Set TLS port as TCP port+1 */
	tcp_cfg.port++;
	status = pjsua_transport_create(PJSIP_TRANSPORT_TLS,
					&tcp_cfg, 
					&transport_id);
	tcp_cfg.port--;
	if (status != PJ_SUCCESS)
	    goto on_error;
	
	/* Add local account */
	pjsua_acc_add_local(transport_id, PJ_FALSE, &acc_id);
	pjsua_acc_set_online_status(acc_id, PJ_TRUE);
    }
#endif

    if (transport_id == -1) {
	PJ_LOG(3,(THIS_FILE, "Error: no transport is configured"));
	status = -1;
	goto on_error;
    }


    /* Add accounts */
    for (i=0; i<app_config.acc_cnt; ++i) {
	status = pjsua_acc_add(&app_config.acc_cfg[i], PJ_TRUE, NULL);
	if (status != PJ_SUCCESS)
	    goto on_error;
	pjsua_acc_set_online_status(current_acc, PJ_TRUE);
    }

    /* Add buddies */
    for (i=0; i<app_config.buddy_cnt; ++i) {
	status = pjsua_buddy_add(&app_config.buddy_cfg[i], NULL);
	if (status != PJ_SUCCESS)
	    goto on_error;
    }

    /* Optionally set codec orders */
    for (i=0; i<app_config.codec_cnt; ++i) {
	pjsua_codec_set_priority(&app_config.codec_arg[i],
				 (pj_uint8_t)(PJMEDIA_CODEC_PRIO_NORMAL+i+9));
    }

    /* Add RTP transports */
    status = pjsua_media_transports_create(&app_config.rtp_cfg);
    if (status != PJ_SUCCESS)
	goto on_error;

    /* Use null sound device? */
#ifndef STEREO_DEMO
    if (app_config.null_audio) {
	status = pjsua_set_null_snd_dev();
	if (status != PJ_SUCCESS)
	    return status;
    }
#endif

    if (app_config.capture_dev != PJSUA_INVALID_ID
        || app_config.playback_dev != PJSUA_INVALID_ID) {
	status
	  = pjsua_set_snd_dev(app_config.capture_dev, app_config.playback_dev);
	if (status != PJ_SUCCESS)
	    goto on_error;
    }

    return PJ_SUCCESS;

on_error:
    app_destroy();
    return status;
}


pj_status_t app_main(void)
{
    pj_status_t status;

    /* Start pjsua */
    status = pjsua_start();
    if (status != PJ_SUCCESS) {
	app_destroy();
	return status;
    }

    console_app_main(&uri_arg);

    return PJ_SUCCESS;
}

pj_status_t app_destroy(void)
{
    pj_status_t status;
    unsigned i;

#ifdef STEREO_DEMO
    if (app_config.snd) {
	pjmedia_snd_port_destroy(app_config.snd);
	app_config.snd = NULL;
    }
#endif

    /* Close tone generators */
    for (i=0; i<app_config.tone_count; ++i) {
	pjsua_conf_remove_port(app_config.tone_slots[i]);
    }

    if (app_config.pool) {
	pj_pool_release(app_config.pool);
	app_config.pool = NULL;
    }

    status = pjsua_destroy();

    pj_bzero(&app_config, sizeof(app_config));

    return status;
}


#ifdef STEREO_DEMO
static void stereo_demo()
{
    pjmedia_port *conf, *splitter, *ch1;
    pj_status_t status;

    /* Disable existing sound device */
    conf = pjsua_set_no_snd_dev();

    /* Create stereo-mono splitter/combiner */
    status = pjmedia_splitcomb_create(app_config.pool, 
				      conf->info.clock_rate /* clock rate */,
				      2	    /* stereo */,
				      2 * conf->info.samples_per_frame,
				      conf->info.bits_per_sample,
				      0	    /* options */,
				      &splitter);
    pj_assert(status == PJ_SUCCESS);

    /* Connect channel0 (left channel?) to conference port slot0 */
    status = pjmedia_splitcomb_set_channel(splitter, 0 /* ch0 */, 
					   0 /*options*/,
					   conf);
    pj_assert(status == PJ_SUCCESS);

    /* Create reverse channel for channel1 (right channel?)... */
    status = pjmedia_splitcomb_create_rev_channel(app_config.pool,
						  splitter,
						  1  /* ch1 */,
						  0  /* options */,
						  &ch1);
    pj_assert(status == PJ_SUCCESS);

    /* .. and register it to conference bridge (it would be slot1
     * if there's no other devices connected to the bridge)
     */
    status = pjsua_conf_add_port(app_config.pool, ch1, NULL);
    pj_assert(status == PJ_SUCCESS);
    
    /* Create sound device */
    status = pjmedia_snd_port_create(app_config.pool, -1, -1, 
				     conf->info.clock_rate,
				     2	    /* stereo */,
				     2 * conf->info.samples_per_frame,
				     conf->info.bits_per_sample,
				     0, &app_config.snd);
    pj_assert(status == PJ_SUCCESS);


    /* Connect the splitter to the sound device */
    status = pjmedia_snd_port_connect(app_config.snd, splitter);
    pj_assert(status == PJ_SUCCESS);

}
#endif