mrproliu commented on code in PR #188:
URL: https://github.com/apache/skywalking-go/pull/188#discussion_r1675785435


##########
plugins/mux/serve_interceptor.go:
##########
@@ -58,8 +61,23 @@ func (n *ServeHTTPInterceptor) AfterInvoke(invocation 
operator.Invocation, resul
        return nil
 }
 
+func newWriterWrapper(rw interface{}) (*writerWrapper, error) {
+       writer := rw.(http.ResponseWriter)
+       hijacker, ok := rw.(http.Hijacker)
+       if !ok {
+               return nil, fmt.Errorf("http.ResponseWriter does not implement 
http.Hijacker")

Review Comment:
   You mean the framework not work? Then I think you need to set it as nil if 
the cast check failure. And if the cast success, you need to call the original 
hijack method. Right? Otherwise, your framework will still failure for now. 



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