rockXiaofeng commented on issue #993:
URL: https://github.com/apache/dubbo-go/issues/993#issuecomment-795086471


   > > dubbo: parse result map failed
   > 
   > The response body needs to be a map. Will you give it a try after 
converting string to map?
   
   okay, when i changed the response string to map, there are no output logs in 
the apisix error_log, but i still got the  HTTP/1.1 502 Bad Gateway  in the 
console:
   ```
   HTTP/1.1 502 Bad Gateway
   Date: Wed, 10 Mar 2021 08:29:50 GMT
   Content-Type: text/plain; charset=utf-8
   Transfer-Encoding: chunked
   Connection: keep-alive
   demo: test
   Server: APISIX/2.3
   X-APISIX-Upstream-Status: 502
   ``` 
   and u can see the header 'demo: test' , it is the map value returned by the 
provider. Why it is in the response header?
   


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