rockXiaofeng commented on issue #3725:
URL: https://github.com/apache/apisix/issues/3725#issuecomment-789496262
We tried again not long ago, and the configuration was the same as
yesterday. This time we got 504 Gateway Time-out. The error.log information is
as follows:
```
2021/03/03 15:13:54 [warn] 12168#257902: *79096 multi: multi connection
detach not empty 00007FE03F400E10
2021/03/03 15:13:54 [error] 12168#257902: *79095 upstream timed out (60:
Operation timed out) while connecting to upstream, client: ::1, server: ,
subrequest: "/foobar", upstream: "dubbo://127.0.0.1:20000"
```
The provider server error log:
```
2021-03-03T15:04:52.251+0800 INFO getty/listener.go:195 got
session:session
{server:TCP_SERVER:7:172.20.216.72:20000<->172.20.216.72:62586}, Read Bytes: 0,
Write Bytes: 0, Read Pkgs: 0, Write Pkgs: 0
2021-03-03T15:04:52.251+0800 ERROR dubbo/dubbo_codec.go:199
pkg.Unmarshal(len(@data):0) = error:get wrong attachments: <nil>
github.com/apache/dubbo-go/protocol/dubbo/impl.unmarshalRequestBody
```
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