您当前的位置: 小弟在做sip的项目，遇到问题啦，向另外一台机器发invite请求时，通过抓包发现对方收到了我的invite sip消息，而且返回了100(Trying) 还有101 Dialog Establishement两条sip消息，正常情况下应该还会返回个200(OK),但不知道为什么会没返回啊，大虾帮忙看看啊
//初始化Invite请求
ret = eXosip_call_build_initial_invite(&message, theKernel.m_desAddr.c_str(), theKernel.m_srcAddr.c_str(), NULL, "This is a call for a conversation");
//组装XML信息
theDDCPAnalyse.CreateInviteRequest(strOut, "300", "D1 CIF", "H.264", "192.168.1.127 UDP 5050", "h3c-v3");
//
osip_message_set_body(message, strOut.c_str(), strOut.length());
osip_message_set_content_type(message, "Application/DDCP");
//发送
ret= eXosip_call_send_initial_invite (message);
------解决方案--------------------
呼叫的时候要协商SDP，网上不是有个小例子吗，一搜就能搜到
- C/C++ code
sprintf_s(callee_url,"<sip:%s@%s:%d>",it->remote_num,urlInfo->proxy_url,urlInfo->proxy_port);
osip_clrspace (callee_url);
osip_clrspace (caller_url);
//呼叫发起消息体
osip_message_t *invite = NULL;
//发送呼叫邀请消息
eXosip_lock();
int ret = eXosip_call_build_initial_invite(&invite,callee_url,caller_url,"","AudioChat");
osip_message_set_supported (invite, "100rel");
eXosip_unlock ();
if (ret != 0)
{
//提示邀请失败
TRACE0("--Intial INVITE failed!\n");
CString str;
str.Format(L"Intial INVITE failed,num is %S",it->remote_num);
LDB(str);
return;
}
char buff[4096]={0};
CSipSdp sdp;
if(!sdp.GetRemoteSdp(buff,callInfo,urlInfo,userInfo,controlInfo,codeInfo,it->remote_num,m_MutexPortList))
{
LDB(_T("构造sdp失败"));
return;
}
osip_message_set_body(invite,buff,strlen(buff));
osip_message_set_content_type (invite, "application/sdp");
osip_message_set_header (invite, "Roster-Manager", callInfo->u_list.manager.c_str());
osip_message_set_header (invite, "EndPoints", endponits.c_str());
//插入定时器
//int maxCount = m_pEndPoint->m_Timer->GetMaxTimerCount()+1;
//m_pEndPoint->m_Timer->InsertTimer(maxCount,MAXTIMEOUT,it->remote_num);
//发送呼叫邀请
eXosip_lock ();
int c_id = eXosip_call_send_initial_invite (invite);
eXosip_unlock ();
if(c_id <0) //send error
{
LDB(_T("--eXosip_call_send_initial_invite (invite)"));
TRACE0("--eXosip_call_send_initial_invite (invite)\n!");
}
------解决方案--------------------
你服务端也是自己开发的吗，这样就更好调试了啊，只要抓包看发送的协议对不对就行了
------解决方案--------------------
你这个跟标准协议不一样别人无法分析了