PJSUA在使用c注册SIP时出错
我正在用C语言写一个软电话客户端，使用的是PJSUA库。首先，我试了一个在pjsip官网上提供的示例代码。现在我在注册到我的Asterisk服务器时遇到了一个错误，但我不知道为什么会这样。我可以成功拨打电话，但因为没有注册，所以无法接听电话。
我试过一个用Python写的注册示例，结果运行得很好。
当然，我已经在sip.conf和extensions.conf文件中配置了我的Asterisk，以便它能够注册这个客户端，这一点在用Python示例程序注册时也能看到。
所以，我很感谢你们花时间帮我找出我的错误。
这是我的C代码：
#define PJ_IS_LITTLE_ENDIAN 1
#define PJ_IS_BIG_ENDIAN 0
#include <pjsua-lib/pjsua.h>
#include <pjlib.h>
#include <pjlib-util.h>
#include <pjnath.h>
#include <pjsip.h>
#include <pjsip_ua.h>
#include <pjsip_simple.h>
#include <pjmedia.h>
#include <pjmedia-codec.h>
#define THIS_FILE "App"
#define SIP_USER "demo-user2"
#define SIP_DOMAIN "192.168.2.59"
#define SIP_PASSWD "123456"
static void on_incoming_call( pjsua_acc_id acc_id, pjsua_call_id call_id, pjsip_rx_data *rdata );
static void on_call_state( pjsua_call_id call_id, pjsip_event *e );
static void on_call_media_state( pjsua_call_id call_id );
static void error_exit( const char *title, pj_status_t status );
int main( int argc, char *argv[] ) {
pjsua_acc_id acc_id;
pj_status_t status;
/* Create pjsua */
status = pjsua_create();
if ( status != PJ_SUCCESS ) {
error_exit( "Error in pjsua_create()", status );
}
/* If argument is specified, it's got to be a valid SIP URL */
if ( argc > 1 ) {
status = pjsua_verify_url( argv[1] );
if ( status != PJ_SUCCESS ) {
error_exit( "Invalid URL in argv", status );
}
}
/* Init pjsua */
pjsua_config cfg;
pjsua_logging_config log_cfg;
pjsua_config_default( &cfg );
cfg.cb.on_incoming_call = &on_incoming_call;
cfg.cb.on_call_media_state = &on_call_media_state;
cfg.cb.on_call_state = &on_call_state;
pjsua_logging_config_default( &log_cfg );
log_cfg.console_level = 4;
status = pjsua_init( &cfg, &log_cfg, NULL );
if ( status != PJ_SUCCESS ) {
error_exit( "Error in pjsua_init()", status );
}
/* Add UDP transport */
{
pjsua_transport_config cfg;
pjsua_transport_config_default( &cfg );
cfg.port = 5060;
status = pjsua_transport_create( PJSIP_TRANSPORT_UDP, &cfg, NULL );
if ( status != PJ_SUCCESS ) {
error_exit( "Error creating transport", status );
}
}
/* Start pjsua */
status = pjsua_start();
if ( status != PJ_SUCCESS ) {
error_exit( "Error starting pjsua", status );
}
/* Register to SIP server */
{
pjsua_acc_config cfg;
pjsua_acc_config_default( &cfg );
cfg.id = pj_str( "sip:" SIP_USER "@" SIP_DOMAIN );
cfg.reg_uri = pj_str("sip:" SIP_DOMAIN );
cfg.cred_count = 1;
cfg.cred_info[0].realm = pj_str( SIP_DOMAIN );
cfg.cred_info[0].scheme = pj_str( "*" );
cfg.cred_info[0].username = pj_str( SIP_USER );
cfg.cred_info[0].data_type = PJSIP_CRED_DATA_PLAIN_PASSWD;
cfg.cred_info[0].data = pj_str( SIP_PASSWD );
status = pjsua_acc_add( &cfg, PJ_TRUE, &acc_id );
if ( status != PJ_SUCCESS ){
error_exit( "Error adding account", status );
}
}
/* if URL is specified, make call to the url */
if ( argc > 1 ) {
pj_str_t uri = pj_str( argv[1] );
status = pjsua_call_make_call( acc_id, &uri, 0, NULL, NULL, NULL );
if (status != PJ_SUCCESS) {
error_exit("Error making call", status);
}
}
/* Wait until user press "q" to quit. */
while ( 1 ) {
char option[10];
puts( "Press 'h' to hangup all calls, 'q' to quit" );
if ( fgets( option, sizeof(option), stdin ) == NULL ) {
puts( "EOF while reading stdin, will quit now.." );
break;
}
if ( option[0] == 'q' ) {
break;
}
if ( option[0] == 'h' ) {
pjsua_call_hangup_all();
}
}
/* Destroy pjsua */
pjsua_destroy();
return 0;
}
static void on_incoming_call( pjsua_acc_id acc_id, pjsua_call_id call_id, pjsip_rx_data *rdata ) {
pjsua_call_info ci;
PJ_UNUSED_ARG( acc_id );
PJ_UNUSED_ARG( rdata );
pjsua_call_get_info( call_id, &ci );
PJ_LOG( 3,( THIS_FILE, "Incoming call from %.*s!!", (int) ci.remote_info.slen, ci.remote_info.ptr ) );
/* Automatically answer incoming calls with 200/OK */
pjsua_call_answer( call_id, 200, NULL, NULL );
}
static void on_call_state( pjsua_call_id call_id, pjsip_event *e ) {
pjsua_call_info ci;
PJ_UNUSED_ARG( e );
pjsua_call_get_info( call_id, &ci );
PJ_LOG( 3,( THIS_FILE, "Call %d state=%.*s", call_id, (int) ci.state_text.slen, ci.state_text.ptr ) );
}
static void on_call_media_state( pjsua_call_id call_id ) {
pjsua_call_info ci;
pjsua_call_get_info( call_id, &ci );
if ( ci.media_status == PJSUA_CALL_MEDIA_ACTIVE ) {
pjsua_conf_connect( ci.conf_slot, 0 );
pjsua_conf_connect( 0, ci.conf_slot );
}
}
static void error_exit( const char *title, pj_status_t status ) {
pjsua_perror( THIS_FILE, title, status );
pjsua_destroy();
exit( 1 );
}
这是我程序的输出：
19:11:53.627 os_core_unix.c !pjlib 2.4.5-svn for POSIX initialized
19:11:53.631 sip_endpoint.c .Creating endpoint instance...
19:11:53.632 pjlib .select() I/O Queue created (0x1ca0f30)
19:11:53.632 sip_endpoint.c .Module "mod-msg-print" registered
19:11:53.633 sip_transport. .Transport manager created.
19:11:53.633 pjsua_core.c .PJSUA state changed: NULL --> CREATED
19:11:53.633 sip_endpoint.c .Module "mod-pjsua-log" registered
19:11:53.633 sip_endpoint.c .Module "mod-tsx-layer" registered
19:11:53.633 sip_endpoint.c .Module "mod-stateful-util" registered
19:11:53.633 sip_endpoint.c .Module "mod-ua" registered
19:11:53.633 sip_endpoint.c .Module "mod-100rel" registered
19:11:53.634 sip_endpoint.c .Module "mod-pjsua" registered
19:11:53.634 sip_endpoint.c .Module "mod-invite" registered
19:11:53.803 alsa_dev.c ..ALSA driver found 11 devices
19:11:53.804 alsa_dev.c ..ALSA initialized
19:11:53.805 pjlib ..select() I/O Queue created (0x1ccb8ac)
19:11:53.837 sip_endpoint.c .Module "mod-evsub" registered
19:11:53.838 sip_endpoint.c .Module "mod-presence" registered
19:11:53.838 sip_endpoint.c .Module "mod-mwi" registered
19:11:53.839 sip_endpoint.c .Module "mod-refer" registered
19:11:53.839 sip_endpoint.c .Module "mod-pjsua-pres" registered
19:11:53.839 sip_endpoint.c .Module "mod-pjsua-im" registered
19:11:53.840 sip_endpoint.c .Module "mod-pjsua-options" registered
19:11:53.840 pjsua_core.c .1 SIP worker threads created
19:11:53.841 pjsua_core.c .pjsua version 2.4.5-svn for Linux-4.1.7/armv7l/glibc-2.13 initialized
19:11:53.841 pjsua_core.c .PJSUA state changed: CREATED --> INIT
19:11:53.842 pjsua_core.c SIP UDP socket reachable at 192.168.2.83:5060
19:11:53.843 udp0x1cde4c8 SIP UDP transport started, published address is 192.168.2.83:5060
19:11:53.843 pjsua_core.c PJSUA state changed: INIT --> STARTING
19:11:53.843 sip_endpoint.c .Module "mod-unsolicited-mwi" registered
19:11:53.844 pjsua_core.c .PJSUA state changed: STARTING --> RUNNING
19:11:53.844 pjsua_acc.c Adding account: id=sip:demo-user2@192.168.2.59
19:11:53.845 pjsua_acc.c .Account sip:demo-user2@192.168.2.59 added with id 0
19:11:53.845 pjsua_acc.c .Acc 0: setting registration..
19:11:53.846 pjsua_core.c ...TX 499 bytes Request msg REGISTER/cseq=2433 (tdta0x1ce2858) to UDP 192.168.2.59:5060:
REGISTER sip:192.168.2.59 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.83:5060;rport;branch=z9hG4bKPjkPDfnXzyPfl.tr1YUGuqWnb0xXPaMNGc
Max-Forwards: 70
From: <sip:demo-user2@192.168.2.59>;tag=z51e618QFYLeBsmdY9nVhzIvmajoODP-
To: <sip:demo-user2@192.168.2.59>
Call-ID: VViAieGUFSZ6qg9pOOuU2xaarZkBACiy
CSeq: 2433 REGISTER
Contact: <sip:demo-user2@192.168.2.83:5060;ob>
Expires: 300
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Content-Length: 0
--end msg--
19:11:53.847 pjsua_acc.c ..Acc 0: Registration sent
Press 'h' to hangup all calls, 'q' to quit
19:11:53.851 pjsua_core.c .RX 578 bytes Response msg 401/REGISTER/cseq=2433 (rdata0x1cdfafc) from UDP 192.168.2.59:5060:
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 192.168.2.83:5060;branch=z9hG4bKPjkPDfnXzyPfl.tr1YUGuqWnb0xXPaMNGc;received=192.168.2.83;rport=5060
From: <sip:demo-user2@192.168.2.59>;tag=z51e618QFYLeBsmdY9nVhzIvmajoODP-
To: <sip:demo-user2@192.168.2.59>;tag=as19db99ad
Call-ID: VViAieGUFSZ6qg9pOOuU2xaarZkBACiy
CSeq: 2433 REGISTER
Server: Asterisk PBX 13.6.0
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="5b64ff92"
Content-Length: 0
--end msg--
19:11:53.851 sip_auth_clien ...Unable to set auth for tdta0x1ce2858: can not find credential for asterisk/Digest
19:11:53.851 pjsua_acc.c ....SIP registration error: No suitable credential (PJSIP_ENOCREDENTIAL) [status=171101]
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1 个回答
8
来自 PJSIP的常见问题解答
我无法登录/注册到我的服务器。它提示有认证错误。
这很可能是因为配置中的凭证（用户名和密码）不正确。解决方法取决于PJSIP报告的错误信息。
对于 PJSIP_ENOCREDENTIAL 错误：
这个错误是因为你在凭证中指定的“领域”（realm）和服务器在401/407响应中挑战的领域不匹配。如果你使用的是PJSIP版本0.7-trunk或0.7.1及以上版本，你可以把领域设置为通配符（"*"），这样PJSIP就会对服务器挑战的任何领域做出响应。如果你使用的是旧版本的PJSIP，你需要确保凭证中的领域和挑战中的领域一致。通常情况下，领域会等于域名，但不一定是这样。例如，Asterisk总是把领域设置为“asterisk”。
更新
将 realm 和 scheme 设置为以下内容
cfg.cred_info[0].realm = pj_str((char *)"*");
cfg.cred_info[0].scheme = pj_str((char *)"digest");