我已经在 pjsua 示例应用程序中成功注册了我的 sip 客户端，并且正在通过 UDP 接收来电。但是，当我尝试拨打拨出电话时，它会因403禁止错误而断开连接。创建的连接是TCP！
我验证了目标 URI。 它的格式为
SIP：移动number@sip服务器 IP：端口
这是我的makeCall代码：
public void makeCall(View view( {
//some code here..
MyCall call = new MyCall(account, id);
CallOpParam prm = new CallOpParam(true);
try {
call.makeCall(buddy_uri, prm);
} catch (Exception e) {
call.delete();
return;
}
currentCall = call;
showCallActivity();
}
此时将显示呼叫活动。日志如下
--------- beginning of system
some media and call related initializations
I/System.out: 17:52:37.581 tcpc0x93d09414 ...TCP client transport created
I/System.out: 17:52:37.583 tcpc0x93d09414 ...TCP transport 192.168.43.167:58160 is connecting to <sip-server-ip>:5060...
I/System.out: 17:52:37.584 pjsua_core.c ...TX 1443 bytes Request msg INVITE/cseq=20547 (tdta0xa8dc0064) to TCP <sip-server-ip>:5060:
I/System.out: INVITE sip:<mobile-number>@<sip-server-ip> SIP/2.0
I/System.out: Via: SIP/2.0/TCP 192.168.43.167:58160;rport;branch=z9hG4bKPj3f2aec57-9f79-46f5-bf03-9f9cb9d482ca;alias
I/System.out: Max-Forwards: 70
I/System.out: From: sip:<sip-account-number>@<sip-server-ip>;tag=90b152c8-fd44-41a3-9851-482da18ee67a
I/System.out: To: sip:<mobile-number>@<sip-server-ip>
I/System.out: Contact: <sip:sip-account-number@25.16.198.109:6000;ob>
I/System.out: Call-ID: c891a91e-054f-426d-810e-3ac2ba55e4f5
I/System.out: CSeq: 20547 INVITE
I/System.out: Route: <sip:sip-server-ip;lr>
I/System.out: Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
I/System.out: Supported: replaces, 100rel, timer, norefersub
I/System.out: Session-Expires: 1800
**some more logs here**
I/System.out: 17:52:37.762 pjsua_core.c .RX 374 bytes Response msg 100/INVITE/cseq=20547 (rdata0x93d095e0) from TCP <sip-server-ip>:5060:
I/System.out: SIP/2.0 100 Trying
I/System.out: Via: SIP/2.0/TCP 192.168.43.167:58160;branch=z9hG4bKPj3f2aec57-9f79-46f5-bf03-9f9cb9d482ca;received=137.97.99.211;rport=58160;alias
I/System.out: Call-ID: c891a91e-054f-426d-810e-3ac2ba55e4f5
I/System.out: From: <sip:sip-account-number>@sip-server-ip>;tag=90b152c8-fd44-41a3-9851-482da18ee67a
I/System.out: To: <sip:mobile-number@sip-server-ip>
I/System.out: CSeq: 20547 INVITE
I/System.out: Content-Length: 0
I/System.out: --end msg--
I/System.out: 17:52:37.766 pjsua_core.c .RX 368 bytes Response msg 403/INVITE/cseq=20547 (rdata0x93d095e0) from TCP <sip-server-ip>:5060:
I/System.out: SIP/2.0 403 Forbidden
I/System.out: Via: SIP/2.0/TCP 192.168.43.167:58160;branch=z9hG4bKPj3f2aec57-9f79-46f5-bf03-9f9cb9d482ca;rport;alias
I/System.out: Call-ID: c891a91e-054f-426d-810e-3ac2ba55e4f5
I/System.out: From: <sip:sip-account-number@sip-server-ip>;tag=90b152c8-fd44-41a3-9851-482da18ee67a
I/System.out: To: <sip:sip-account-number@sip-server-ip>;tag=sbc0909b28y79co
I/System.out: CSeq: 20547 INVITE
I/System.out: Content-Length: 0
I/System.out: --end msg--
经过不断的尝试，我自己解决了。在 pjsip-pjsua 中，我们设置了帐户配置
accountConfigurationg.getNatConfig((.setIceEnabled(true(;
因此，许多数据被传递到服务器，例如 rtcp 有效负载等。因此，库会自动使用更可靠的 TCP 连接。
accountConfigurationg.getNatConfig((.setIceEnabled(false(; 这将停止发送如此多的数据，因此呼叫将成功建立。