diff --git a/README.md b/README.md
index ab0f41c19..a3177b080 100755
--- a/README.md
+++ b/README.md
@@ -233,6 +233,7 @@ Please select according to languages:
 
 ### V2 changes
 
+* v2.0, 2018-02-28, Merge [#1077][bug #1077], fix crash for edge HLS. 2.0.247
 * v2.0, 2018-02-13, Fix [#1059][bug #1059], support vhost in stream parameters. 2.0.246
 * v2.0, 2018-01-07, Merge [#1045][bug #1045], fix [#1044][bug #1044], TCP connection alive detection. 2.0.245
 * v2.0, 2018-01-04, Merge [#1039][bug #1039], fix bug of init.d script.
@@ -1430,6 +1431,7 @@ Winlin
 [bug #1044]: https://github.com/ossrs/srs/issues/1044
 [bug #1045]: https://github.com/ossrs/srs/issues/1045
 [bug #1059]: https://github.com/ossrs/srs/issues/1059
+[bug #1077]: https://github.com/ossrs/srs/issues/1077
 [bug #xxxxxxxxxx]: https://github.com/ossrs/srs/issues/xxxxxxxxxx
 
 [bug #735]: https://github.com/ossrs/srs/issues/735
diff --git a/trunk/src/app/srs_app_hls.cpp b/trunk/src/app/srs_app_hls.cpp
index 56e440d09..f6dacc659 100644
--- a/trunk/src/app/srs_app_hls.cpp
+++ b/trunk/src/app/srs_app_hls.cpp
@@ -1011,7 +1011,7 @@ srs_error_t SrsHls::initialize(SrsOriginHub* h, SrsRequest* r)
 srs_error_t SrsHls::on_publish()
 {
     srs_error_t err = srs_success;
-    
+
     // update the hls time, for hls_dispose.
     last_update_time = srs_get_system_time_ms();
     
diff --git a/trunk/src/app/srs_app_rtmp_conn.cpp b/trunk/src/app/srs_app_rtmp_conn.cpp
index 86d4289d3..cee90deae 100644
--- a/trunk/src/app/srs_app_rtmp_conn.cpp
+++ b/trunk/src/app/srs_app_rtmp_conn.cpp
@@ -172,7 +172,7 @@ srs_error_t SrsRtmpConn::do_cycle()
     
     rtmp->set_recv_timeout(SRS_CONSTS_RTMP_TMMS);
     rtmp->set_send_timeout(SRS_CONSTS_RTMP_TMMS);
-    
+
     if ((err = rtmp->handshake()) != srs_success) {
         return srs_error_wrap(err, "rtmp handshake");
     }
@@ -472,28 +472,28 @@ srs_error_t SrsRtmpConn::stream_service_cycle()
     req->strip();
     srs_trace("client identified, type=%s, vhost=%s, app=%s, stream_name=%s, duration=%.2f",
         srs_client_type_string(info->type).c_str(), req->vhost.c_str(), req->app.c_str(), req->stream.c_str(), req->duration);
-    
+
     // discovery vhost, resolve the vhost from config
     SrsConfDirective* parsed_vhost = _srs_config->get_vhost(req->vhost);
     if (parsed_vhost) {
         req->vhost = parsed_vhost->arg0();
     }
-    
+
     if (req->schema.empty() || req->vhost.empty() || req->port == 0 || req->app.empty()) {
         return srs_error_new(ERROR_RTMP_REQ_TCURL, "discovery tcUrl failed, tcUrl=%s, schema=%s, vhost=%s, port=%d, app=%s",
             req->tcUrl.c_str(), req->schema.c_str(), req->vhost.c_str(), req->port, req->app.c_str());
     }
-    
+
     // check vhost, allow default vhost.
     if ((err = check_vhost(true)) != srs_success) {
         return srs_error_wrap(err, "check vhost");
     }
-    
+
     srs_trace("connected stream, tcUrl=%s, pageUrl=%s, swfUrl=%s, schema=%s, vhost=%s, port=%d, app=%s, stream=%s, args=%s",
         req->tcUrl.c_str(), req->pageUrl.c_str(), req->swfUrl.c_str(),
         req->schema.c_str(), req->vhost.c_str(), req->port,
         req->app.c_str(), req->stream.c_str(), (req->args? "(obj)":"null"));
-    
+
     // do token traverse before serve it.
     // @see https://github.com/ossrs/srs/pull/239
     if (true) {
@@ -505,7 +505,7 @@ srs_error_t SrsRtmpConn::stream_service_cycle()
             }
         }
     }
-    
+
     // security check
     if ((err = security->check(info->type, ip, req)) != srs_success) {
         return srs_error_wrap(err, "rtmp: security check");
diff --git a/trunk/src/app/srs_app_rtsp.cpp b/trunk/src/app/srs_app_rtsp.cpp
index e8c56c487..3c46ab9e6 100644
--- a/trunk/src/app/srs_app_rtsp.cpp
+++ b/trunk/src/app/srs_app_rtsp.cpp
@@ -643,7 +643,7 @@ srs_error_t SrsRtspConn::connect()
         std::string schema, host, vhost, app, param;
         int port;
         srs_discovery_tc_url(rtsp_tcUrl, schema, host, vhost, app, rtsp_stream, port, param);
-        
+
         // generate output by template.
         std::string output = output_template;
         output = srs_string_replace(output, "[app]", app);
diff --git a/trunk/src/libs/srs_librtmp.cpp b/trunk/src/libs/srs_librtmp.cpp
index 6508b80c2..9bb0f3f95 100644
--- a/trunk/src/libs/srs_librtmp.cpp
+++ b/trunk/src/libs/srs_librtmp.cpp
@@ -479,7 +479,7 @@ int srs_librtmp_context_parse_uri(Context* context)
     int ret = ERROR_SUCCESS;
     
     std::string schema;
-    
+
     srs_parse_rtmp_url(context->url, context->tcUrl, context->stream);
     
     // when connect, we only need to parse the tcUrl