capture rtp host and port from sdp

Author: Marc-i2x

src/call.cpp

@@ -162,7 +162,6 @@ unsigned int call::wake()
     return wake;
 }
 
-#if defined(PCAPPLAY) || defined(RTP_STREAM) || defined(GTEST)
 static std::string find_in_sdp(std::string const &pattern, std::string const &msg)
 {
     std::string::size_type begin, end;
@@ -180,7 +179,6 @@ static std::string find_in_sdp(std::string const &pattern, std::string const &ms
 
     return msg.substr(begin, end - begin);
 }
-#endif
 
 #ifdef PCAPPLAY
 void call::get_remote_media_addr(std::string const &msg)
@@ -959,6 +957,19 @@ char * call::get_last_header(const char * name)
         ERROR("call::get_last_header: Header to parse bigger than %d (%zu)", MAX_HEADER_LEN, strlen(name));
     }
 
+    if(strcmp(name, "media_ip")==0) {
+      // get media ip from sdp
+      static std::string host;
+      host = find_in_sdp(media_ip_is_ipv6 ? "c=IN IP6 " : "c=IN IP4 ", last_recv_msg);
+      return const_cast<char*>(host.c_str());
+    }
+    if(strcmp(name, "media_port")==0) {
+      // get media port from sdp
+      static std::string port;
+      port = find_in_sdp("m=audio ", last_recv_msg);
+      return const_cast<char*>(port.c_str());
+    }
+
     if (name[len - 1] == ':') {
         return get_header(last_recv_msg, name, false);
     } else {