I'm use go-grpc as communication between client & server program.
When the server killed by manual, the client will get an error, I'm trying
to know that situation.
Here is some client code,
36 var check = func(err error) {
37 if err != nil {
38 panic(err)
39 }
40 }
...
145 } else if err != nil {
146 log.Println(fmt.Errorf("decompress:
%w\n", err))
147 st := conn.GetState()
148 if st == connectivity.TransientFailure
{
149 log.Println("server may down")
150 break
151 }
152 log.Println("Err: grpc code:",
grpc.Code(err),
153 "state:", st)
154 check(err)
155 }
panic: rpc error: code = Unavailable desc = transport is closing // <--
output of line 146
goroutine 1 [running]:
main.glob..func1(0xc47280, 0xc0002060a0)
/home/rt/cmd/rt_cmd/rt_cmd.go:38 +0x6f
main.main()
/home/rt/cmd/rt_cmd/rt_cmd.go:153 +0x1537
[guest@tradevm tmp]$ ./rt_cmd -log /mnt/tmp/rt_cmd_f.log :8003 m all
panic: rpc error: code = Unavailable desc = transport is closing
goroutine 1 [running]:
main.glob..func1(0xc47560, 0xc0000ca5f0)
/home//rt/cmd/rt_cmd/rt_cmd.go:38 +0x6f
main.main()
/home/dlin/prj/trade.2019rt/f/opt/tools/rt/cmd/rt_cmd/rt_cmd.go:154
+0x15e0
I found it is not easy for me to figure out which error in the output of
line 146.
Does any new Go 1.13 Errors functions can help?
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