add comments and variable for c3 extended-timestamp. to 0.9.82

@@ -42,7 +42,11 @@ int main(int argc, char** argv)
     printf("srs(simple-rtmp-server) client librtmp library.\n");
     printf("version: %d.%d.%d\n", srs_version_major(), srs_version_minor(), srs_version_revision());
     
+    if (argc > 1) {
+        rtmp = srs_rtmp_create(argv[1]);
+    } else {
         rtmp = srs_rtmp_create("rtmp://127.0.0.1:1935/live/livestream");
+    }
     
      if (srs_simple_handshake(rtmp) != 0) {
         printf("simple handshake failed.\n");

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "81"
+#define VERSION_REVISION "82"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "srs"

@@ -301,6 +301,7 @@ SrsProtocol::SrsProtocol(ISrsProtocolReaderWriter* io)
     skt = io;
     
     in_chunk_size = out_chunk_size = RTMP_DEFAULT_CHUNK_SIZE;
+    send_extended_timestamp_for_C3_chunk = true;
 }
 
 SrsProtocol::~SrsProtocol()
@@ -524,7 +525,7 @@ int SrsProtocol::do_send_and_free_message(SrsMessage* msg, SrsPacket* packet)
             // @see: ngx_rtmp_prepare_message
             // @see: http://blog.csdn.net/win_lin/article/details/13363699
             u_int32_t timestamp = (u_int32_t)msg->header.timestamp;
-            if(timestamp >= RTMP_EXTENDED_TIMESTAMP){
+            if(send_extended_timestamp_for_C3_chunk && timestamp >= RTMP_EXTENDED_TIMESTAMP){
                 pp = (char*)&timestamp;
                 *pheader++ = pp[3];
                 *pheader++ = pp[2];
@@ -1086,7 +1087,8 @@ int SrsProtocol::read_message_header(SrsChunkStream* chunk, char fmt, int bh_siz
             fmt, mh_size, chunk->extended_timestamp);
     }
     
-    if (chunk->extended_timestamp) {
+    // read extended-timestamp
+    if (chunk->extended_timestamp && send_extended_timestamp_for_C3_chunk) {
         mh_size += 4;
         required_size = bh_size + mh_size;
         srs_verbose("read header ext time. fmt=%d, ext_time=%d, mh_size=%d", fmt, chunk->extended_timestamp, mh_size);
@@ -1111,7 +1113,8 @@ int SrsProtocol::read_message_header(SrsChunkStream* chunk, char fmt, int bh_siz
         u_int32_t chunk_timestamp = chunk->header.timestamp;
         if (chunk_timestamp > RTMP_EXTENDED_TIMESTAMP && chunk_timestamp != timestamp) {
             mh_size -= 4;
-            srs_verbose("ignore the 4bytes extended timestamp. mh_size=%d", mh_size);
+            send_extended_timestamp_for_C3_chunk = false;
+            srs_warn("no 4bytes extended timestamp in the continued chunk");
         } else {
             chunk->header.timestamp = timestamp;
         }

@@ -107,6 +107,24 @@ private:
     * value: the request command name
     */
     std::map<double, std::string> requests;
+    /**
+    * RTMP specification and ffmpeg/librtmp is false,
+    * but, adobe changed the specification, so flash/FMLE/FMS always true.
+    * default to true to support flash/FMLE/FMS.
+    * 
+    * ffmpeg/librtmp may donot send this filed, need to detect the value.
+    * @see also: http://blog.csdn.net/win_lin/article/details/13363699
+    * compare to the chunk timestamp, which is set by chunk message header
+    * type 0,1 or 2.
+    *
+    * @remark, nginx send the extended-timestamp in sequence-header,
+    * and timestamp delta in continue C1 chunks, and so compatible with ffmpeg,
+    * that is, there is no continue chunks and extended-timestamp in nginx-rtmp.
+    *
+    * @remark, srs always send the extended-timestamp, to keep simple,
+    * and compatible with adobe products.
+    */
+    bool send_extended_timestamp_for_C3_chunk;
 // peer in
 private:
     std::map<int, SrsChunkStream*> chunk_streams;