for #474, refine the hls publish, donot fetch from source when publish

@@ -1252,7 +1252,7 @@ int SrsHls::initialize(SrsSource* s, ISrsHlsHandler* h)
     return ret;
     return ret;
 }
 }
 
 
-int SrsHls::on_publish(SrsRequest* req)
+int SrsHls::on_publish(SrsRequest* req, bool fetch_sequence_header)
 {
 {
     int ret = ERROR_SUCCESS;
     int ret = ERROR_SUCCESS;
     
     
@@ -1282,6 +1282,9 @@ int SrsHls::on_publish(SrsRequest* req)
     // ok, the hls can be dispose, or need to be dispose.
     // ok, the hls can be dispose, or need to be dispose.
     hls_can_dispose = true;
     hls_can_dispose = true;
     
     
+    // when publish, don't need to fetch sequence header, which is old and maybe corrupt.
+    // when reload, we must fetch the sequence header from source cache.
+    if (fetch_sequence_header) {
         // notice the source to get the cached sequence header.
         // notice the source to get the cached sequence header.
         // when reload to start hls, hls will never get the sequence header in stream,
         // when reload to start hls, hls will never get the sequence header in stream,
         // use the SrsSource.on_hls_start to push the sequence header to HLS.
         // use the SrsSource.on_hls_start to push the sequence header to HLS.
@@ -1289,6 +1292,7 @@ int SrsHls::on_publish(SrsRequest* req)
             srs_error("callback source hls start failed. ret=%d", ret);
             srs_error("callback source hls start failed. ret=%d", ret);
             return ret;
             return ret;
         }
         }
+    }
 
 
     return ret;
     return ret;
 }
 }

@@ -426,8 +426,9 @@ public:
     /**
     /**
      * publish stream event, continue to write the m3u8,
      * publish stream event, continue to write the m3u8,
      * for the muxer object not destroyed.
      * for the muxer object not destroyed.
+     * @param fetch_sequence_header whether fetch sequence from source.
      */
      */
-    virtual int on_publish(SrsRequest* req);
+    virtual int on_publish(SrsRequest* req, bool fetch_sequence_header);
     /**
     /**
     * the unpublish event, only close the muxer, donot destroy the 
     * the unpublish event, only close the muxer, donot destroy the 
     * muxer, for when we continue to publish, the m3u8 will continue.
     * muxer, for when we continue to publish, the m3u8 will continue.

@@ -1180,7 +1180,7 @@ int SrsSource::on_reload_vhost_hls(string vhost)
     
     
 #ifdef SRS_AUTO_HLS
 #ifdef SRS_AUTO_HLS
     hls->on_unpublish();
     hls->on_unpublish();
-    if ((ret = hls->on_publish(_req)) != ERROR_SUCCESS) {
+    if ((ret = hls->on_publish(_req, true)) != ERROR_SUCCESS) {
         srs_error("hls publish failed. ret=%d", ret);
         srs_error("hls publish failed. ret=%d", ret);
         return ret;
         return ret;
     }
     }
@@ -2039,7 +2039,7 @@ int SrsSource::on_publish()
     
     
     // TODO: FIXME: use initialize to set req.
     // TODO: FIXME: use initialize to set req.
 #ifdef SRS_AUTO_HLS
 #ifdef SRS_AUTO_HLS
-    if ((ret = hls->on_publish(_req)) != ERROR_SUCCESS) {
+    if ((ret = hls->on_publish(_req, false)) != ERROR_SUCCESS) {
         srs_error("start hls failed. ret=%d", ret);
         srs_error("start hls failed. ret=%d", ret);
         return ret;
         return ret;
     }
     }