Bug fix: Initialize RequestReceivedTimestamp

Author: liu-cong

pkg/epp/handlers/streamingserver.go

@@ -90,6 +90,7 @@ func (s *StreamingServer) Process(srv extProcPb.ExternalProcessor_ProcessServer)
 
 		switch v := req.Request.(type) {
 		case *extProcPb.ProcessingRequest_RequestHeaders:
+			reqCtx.RequestReceivedTimestamp = time.Now()
 			// Do nothing. Header info is handled in the HandleRequestBody func
 		case *extProcPb.ProcessingRequest_RequestBody:
 			loggerVerbose.Info("Incoming body chunk", "body", string(v.RequestBody.Body), "EoS", v.RequestBody.EndOfStream)