Check the status code of each server responses, and fail if it indicates

a problem.

Patch by Zhentan Feng <spyfeng gmail com>.

Originally committed as revision 24358 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mmst.c

@@ -260,6 +260,7 @@ static MMSSCPacketType get_tcp_server_response(MMSContext *mms)
                 read_result= url_read_complete(mms->mms_hd, mms->in_buffer+8, 4);
                 if(read_result == 4) {
                     int length_remaining= AV_RL32(mms->in_buffer+8) + 4;
+                    int hr;
 
                     dprintf(NULL, "Length remaining is %d\n", length_remaining);
                     // read the rest of the packet.
@@ -277,6 +278,11 @@ static MMSSCPacketType get_tcp_server_response(MMSContext *mms)
                         dprintf(NULL, "read for packet type failed%d!\n", read_result);
                         return -1;
                     }
+                    hr = AV_RL32(mms->in_buffer + 40);
+                    if (hr) {
+                        dprintf(NULL, "The server side send back error code:0x%x\n", hr);
+                        return -1;
+                    }
                 } else {
                     dprintf(NULL, "read for length remaining failed%d!\n", read_result);
                     return -1;