Make sure to reset the userValues always and at the exact time (#1027)

* Ensure reset userValues always that release RequestCtx

* Reset userValues after response write and hijack handler are executed

server.go

@@ -2237,8 +2237,6 @@ func (s *Server) serveConn(c net.Conn) (err error) {
 		hijackNoResponse = ctx.hijackNoResponse && hijackHandler != nil
 		ctx.hijackNoResponse = false
 
-		ctx.userValues.Reset()
-
 		if s.MaxRequestsPerConn > 0 && connRequestNum >= uint64(s.MaxRequestsPerConn) {
 			ctx.SetConnectionClose()
 		}
@@ -2329,6 +2327,7 @@ func (s *Server) serveConn(c net.Conn) (err error) {
 		}
 
 		s.setState(c, StateIdle)
+		ctx.userValues.Reset()
 
 		if atomic.LoadInt32(&s.stop) == 1 {
 			err = nil
@@ -2651,6 +2650,7 @@ func (s *Server) releaseCtx(ctx *RequestCtx) {
 	ctx.c = nil
 	ctx.remoteAddr = nil
 	ctx.fbr.c = nil
+	ctx.userValues.Reset()
 	s.ctxPool.Put(ctx)
 }