Example echo can't run on mac!

[zhangcunli]

➜ echo_server--20210918-1516-test git:(master) ✗ pwd
................./getty/examples/echo/tcp-echo/server/target/darwin/echo_server--20210918-1516-test
➜ echo_server--20210918-1516-test git:(master) ✗ sh bin/load_echo_server.sh start
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0xb01dfacedebac1e pc=0x7fff65d50476]

runtime stack:
runtime: unexpected return pc for runtime.sigpanic called from 0x7fff65d50476
stack: frame={sp:0x70000bcf8e58, fp:0x70000bcf8ea8} stack=[0x70000bc79338,0x70000bcf8f38)
0x000070000bcf8d58: 0x010070000bcf8d78 0x0000000000000004
0x000070000bcf8d68: 0x000000000000001f 0x00007fff65d50476
0x000070000bcf8d78: 0x0b01dfacedebac1e 0x0000000000000001
0x000070000bcf8d88: 0x00000000040370b1 <runtime.throw+0x0000000000000071> 0x000070000bcf8e28
0x000070000bcf8d98: 0x000000000439db39 0x000070000bcf8de0
0x000070000bcf8da8: 0x0000000004037368 <runtime.fatalthrow.func1+0x0000000000000048> 0x000000c000001520
0x000070000bcf8db8: 0x0000000000000001 0x0000000000000001
0x000070000bcf8dc8: 0x000070000bcf8e28 0x00000000040370b1 <runtime.throw+0x0000000000000071>
0x000070000bcf8dd8: 0x000000c000001520 0x000070000bcf8e18
0x000070000bcf8de8: 0x00000000040372f0 <runtime.fatalthrow+0x0000000000000050> 0x000070000bcf8df8
0x000070000bcf8df8: 0x0000000004037320 <runtime.fatalthrow.func1+0x0000000000000000> 0x000000c000001520
0x000070000bcf8e08: 0x00000000040370b1 <runtime.throw+0x0000000000000071> 0x000070000bcf8e28
0x000070000bcf8e18: 0x000070000bcf8e48 0x00000000040370b1 <runtime.throw+0x0000000000000071>
0x000070000bcf8e28: 0x000070000bcf8e30 0x00000000040370e0 <runtime.throw.func1+0x0000000000000000>
0x000070000bcf8e38: 0x00000000043a3f42 0x000000000000002a
0x000070000bcf8e48: 0x000070000bcf8e98 0x000000000404d6d6 <runtime.sigpanic+0x0000000000000396>
0x000070000bcf8e58: <0x00000000043a3f42 0x000070000bcf8e80
0x000070000bcf8e68: 0x000070000bcf8ed8 0x0000000004028506 <runtime.(*mheap).allocSpan+0x0000000000000546>
0x000070000bcf8e78: 0x000000c00009c000 0x0000000000002000
0x000070000bcf8e88: 0x000000c000000008 0x0000000000000000
0x000070000bcf8e98: 0x000070000bcf8ee0 !0x00007fff65d50476
0x000070000bcf8ea8: >0x000070000bcf8ee0 0x00000000045e7000
0x000070000bcf8eb8: 0x0000000000000420 0x00000000040d2f85 <golang.org/x/sys/unix.libc_ioctl_trampoline+0x0000000000000005>

[Lvnszn]

Could you plz show me the load_echo_server.sh script and how to build binary?

[AlexStocks]

@zhangcunli pls tell me the version of getty u using. I can not reproduce the problem.

[zhangcunli]

1. getty version: master branch

2.build and run
sh assembly/mac/test.sh
cd target/darwin/echo_server--20210922-0957-test

export APP_CONF_FILE="conf/config.yml"
export APP_LOG_CONF_FILE="conf/log.xml"
./sbin/echo_server
or sh bin/load_echo_server.sh start

fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0xb01dfacedebac1e pc=0x7fff65d50476]

runtime stack:
runtime: unexpected return pc for runtime.sigpanic called from 0x7fff65d50476
stack: frame={sp:0x7ffeefbff468, fp:0x7ffeefbff4b8} stack=[0x7ffeefb80508,0x7ffeefbff570)
0x00007ffeefbff368: 0x01007ffeefbff388 0x0000000000000004
0x00007ffeefbff378: 0x000000000000001f 0x00007fff65d50476
0x00007ffeefbff388: 0x0b01dfacedebac1e 0x0000000000000001
0x00007ffeefbff398: 0x0000000004036ef1 <runtime.throw+0x0000000000000071> 0x00007ffeefbff438
0x00007ffeefbff3a8: 0x000000000439dab0 0x00007ffeefbff3f0
0x00007ffeefbff3b8: 0x00000000040371a8 <runtime.fatalthrow.func1+0x0000000000000048> 0x0000000004640ee0
0x00007ffeefbff3c8: 0x0000000000000001 0x0000000000000001
0x00007ffeefbff3d8: 0x00007ffeefbff438 0x0000000004036ef1 <runtime.throw+0x0000000000000071>
0x00007ffeefbff3e8: 0x0000000004640ee0 0x00007ffeefbff428
0x00007ffeefbff3f8: 0x0000000004037130 <runtime.fatalthrow+0x0000000000000050> 0x00007ffeefbff408
0x00007ffeefbff408: 0x0000000004037160 <runtime.fatalthrow.func1+0x0000000000000000> 0x0000000004640ee0
0x00007ffeefbff418: 0x0000000004036ef1 <runtime.throw+0x0000000000000071> 0x00007ffeefbff438
0x00007ffeefbff428: 0x00007ffeefbff458 0x0000000004036ef1 <runtime.throw+0x0000000000000071>
0x00007ffeefbff438: 0x00007ffeefbff440 0x0000000004036f20 <runtime.throw.func1+0x0000000000000000>
0x00007ffeefbff448: 0x00000000043a3eb9 0x000000000000002a
0x00007ffeefbff458: 0x00007ffeefbff4a8 0x000000000404d516 <runtime.sigpanic+0x0000000000000396>
0x00007ffeefbff468: <0x00000000043a3eb9 0x00007ffeefbff490
0x00007ffeefbff478: 0x00007ffeefbff4e8 0x0000000004028346 <runtime.(*mheap).allocSpan+0x0000000000000546>
0x00007ffeefbff488: 0x000000c00029e000 0x0000000000002000
0x00007ffeefbff498: 0x000000c000000008 0x0000000000000000
0x00007ffeefbff4a8: 0x00007ffeefbff4f0 !0x00007fff65d50476
0x00007ffeefbff4b8: >0x00007ffeefbff4f0 0x00000000045e7000
0x00007ffeefbff4c8: 0x0000000000000420 0x00000000040d2e65 <golang.org/x/sys/unix.libc_ioctl_trampoline+0x0000000000000005>
0x00007ffeefbff4d8: 0x000000000406bf7f <runtime.syscall+0x000000000000001f> 0x000000c00004eca8
0x00007ffeefbff4e8: 0x00000000046414a0 0x000000c00004ec78
0x00007ffeefbff4f8: 0x0000000004069dd0 <runtime.asmcgocall+0x0000000000000070> 0x00007ffeefbff530
0x00007ffeefbff508: 0x000000000400f68e <runtime.persistentalloc.func1+0x000000000000002e> 0x0000000000000020
0x00007ffeefbff518: 0x0000000004640ee0 0x0000000004675020
0x00007ffeefbff528: 0x00000000000003b0 0x000000c000256000
0x00007ffeefbff538: 0x0000000004067ee9 <runtime.systemstack+0x0000000000000049> 0x0000000000000004
0x00007ffeefbff548: 0x0000000004407188 0x0000000004640ee0
0x00007ffeefbff558: 0x00007ffeefbff5a0 0x0000000004067de5 <runtime.mstart+0x0000000000000005>
0x00007ffeefbff568: 0x0000000004067d9d <runtime.rt0_go+0x000000000000013d>
runtime.throw({0x43a3eb9, 0x7ffeefbff490})
/Users/zhangcunli/Documents/go/src/runtime/panic.go:1198 +0x71
runtime: unexpected return pc for runtime.sigpanic called from 0x7fff65d50476
stack: frame={sp:0x7ffeefbff468, fp:0x7ffeefbff4b8} stack=[0x7ffeefb80508,0x7ffeefbff570)
0x00007ffeefbff368: 0x01007ffeefbff388 0x0000000000000004
0x00007ffeefbff378: 0x000000000000001f 0x00007fff65d50476
0x00007ffeefbff388: 0x0b01dfacedebac1e 0x0000000000000001
0x00007ffeefbff398: 0x0000000004036ef1 <runtime.throw+0x0000000000000071> 0x00007ffeefbff438
0x00007ffeefbff3a8: 0x000000000439dab0 0x00007ffeefbff3f0
0x00007ffeefbff3b8: 0x00000000040371a8 <runtime.fatalthrow.func1+0x0000000000000048> 0x0000000004640ee0
0x00007ffeefbff3c8: 0x0000000000000001 0x0000000000000001
0x00007ffeefbff3d8: 0x00007ffeefbff438 0x0000000004036ef1 <runtime.throw+0x0000000000000071>
0x00007ffeefbff3e8: 0x0000000004640ee0 0x00007ffeefbff428
0x00007ffeefbff3f8: 0x0000000004037130 <runtime.fatalthrow+0x0000000000000050> 0x00007ffeefbff408
0x00007ffeefbff408: 0x0000000004037160 <runtime.fatalthrow.func1+0x0000000000000000> 0x0000000004640ee0
0x00007ffeefbff418: 0x0000000004036ef1 <runtime.throw+0x0000000000000071> 0x00007ffeefbff438
0x00007ffeefbff428: 0x00007ffeefbff458 0x0000000004036ef1 <runtime.throw+0x0000000000000071>
0x00007ffeefbff438: 0x00007ffeefbff440 0x0000000004036f20 <runtime.throw.func1+0x0000000000000000>
0x00007ffeefbff448: 0x00000000043a3eb9 0x000000000000002a
0x00007ffeefbff458: 0x00007ffeefbff4a8 0x000000000404d516 <runtime.sigpanic+0x0000000000000396>
0x00007ffeefbff468: <0x00000000043a3eb9 0x00007ffeefbff490
0x00007ffeefbff478: 0x00007ffeefbff4e8 0x0000000004028346 <runtime.(*mheap).allocSpan+0x0000000000000546>
0x00007ffeefbff488: 0x000000c00029e000 0x0000000000002000
0x00007ffeefbff498: 0x000000c000000008 0x0000000000000000
0x00007ffeefbff4a8: 0x00007ffeefbff4f0 !0x00007fff65d50476
0x00007ffeefbff4b8: >0x00007ffeefbff4f0 0x00000000045e7000
0x00007ffeefbff4c8: 0x0000000000000420 0x00000000040d2e65 <golang.org/x/sys/unix.libc_ioctl_trampoline+0x0000000000000005>
0x00007ffeefbff4d8: 0x000000000406bf7f <runtime.syscall+0x000000000000001f> 0x000000c00004eca8
0x00007ffeefbff4e8: 0x00000000046414a0 0x000000c00004ec78
0x00007ffeefbff4f8: 0x0000000004069dd0 <runtime.asmcgocall+0x0000000000000070> 0x00007ffeefbff530
0x00007ffeefbff508: 0x000000000400f68e <runtime.persistentalloc.func1+0x000000000000002e> 0x0000000000000020
0x00007ffeefbff518: 0x0000000004640ee0 0x0000000004675020
0x00007ffeefbff528: 0x00000000000003b0 0x000000c000256000
0x00007ffeefbff538: 0x0000000004067ee9 <runtime.systemstack+0x0000000000000049> 0x0000000000000004
0x00007ffeefbff548: 0x0000000004407188 0x0000000004640ee0
0x00007ffeefbff558: 0x00007ffeefbff5a0 0x0000000004067de5 <runtime.mstart+0x0000000000000005>
0x00007ffeefbff568: 0x0000000004067d9d <runtime.rt0_go+0x000000000000013d>
runtime.sigpanic()
/Users/zhangcunli/Documents/go/src/runtime/signal_unix.go:719 +0x396

goroutine 18 [syscall]:
syscall.syscall(0x40d2e60, 0x1, 0x40487413, 0xc00004ed38)
/Users/zhangcunli/Documents/go/src/runtime/sys_darwin.go:22 +0x3b fp=0xc00004eca8 sp=0xc00004ec88 pc=0x4066a9b
syscall.syscall(0xc000290330, 0xc00006eaa0, 0xc0001462b8, 0xc00001d8b0)
:1 +0x26 fp=0xc00004ecf0 sp=0xc00004eca8 pc=0x406c726
golang.org/x/sys/unix.ioctl(0xc00001d888, 0xc0002922c0, 0x2b1)
/Users/zhangcunli/Documents/work/edget/getty/vendor/golang.org/x/sys/unix/zsyscall_darwin_amd64.go:746 +0x39 fp=0xc00004ed20 sp=0xc00004ecf0 pc=0x40d2af9
golang.org/x/sys/unix.IoctlGetTermios(...)
/Users/zhangcunli/Documents/work/edget/getty/vendor/golang.org/x/sys/unix/ioctl.go:63
github.com/mattn/go-isatty.IsTerminal(0x45fd450)
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/mattn/go-isatty/isatty_bsd.go:10 +0x50 fp=0xc00004ed90 sp=0xc00004ed20 pc=0x40d2f10
github.com/AlexStocks/log4go.CPrintfln({0x440bba0, 0xc000010018}, {0x45e750c, 0x5, 0xc00003deb0}, {0xc0002922c0, 0x2b1})
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/color.go:51 +0xf9 fp=0xc00004ee20 sp=0xc00004ed90 pc=0x429d279
github.com/AlexStocks/log4go.cInfo(...)
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/color.go:69
github.com/AlexStocks/log4go.(*ConsoleLogWriter).run(0xc000252000, {0x440bba0, 0xc000010018})
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/termlog.go:98 +0x36d fp=0xc00004efb8 sp=0xc00004ee20 pc=0x42a676d
github.com/AlexStocks/log4go.NewConsoleLogWriter·dwrap·11()
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/termlog.go:39 +0x2e fp=0xc00004efe0 sp=0xc00004efb8 pc=0x42a63ce
runtime.goexit()
/Users/zhangcunli/Documents/go/src/runtime/asm_amd64.s:1581 +0x1 fp=0xc00004efe8 sp=0xc00004efe0 pc=0x406a0c1
created by github.com/AlexStocks/log4go.NewConsoleLogWriter
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/termlog.go:39 +0x134

goroutine 1 [runnable]:
syscall.fcntl(0x9, 0x2, 0x1)
/Users/zhangcunli/Documents/go/src/syscall/zsyscall_darwin_amd64.go:319 +0xc5
syscall.CloseOnExec(...)
/Users/zhangcunli/Documents/go/src/syscall/exec_unix.go:105
net.sysSocket(0x1, 0xc00022e750, 0xc000214c40)
/Users/zhangcunli/Documents/go/src/net/sys_cloexec.go:26 +0x8c
net.socket({0x44136d0, 0xc00001c608}, {0x4391dd3, 0x3}, 0x2, 0x1, 0x40c11cc, 0x0, {0x4415fb0, 0xc00022e780}, ...)
/Users/zhangcunli/Documents/go/src/net/sock_posix.go:20 +0x71
net.internetSocket({0x44136d0, 0xc00001c608}, {0x4391dd3, 0x3}, {0x4415fb0, 0xc00022e780}, {0x0, 0x0}, 0xc00022e780, 0x0, ...)
/Users/zhangcunli/Documents/go/src/net/ipsock_posix.go:142 +0xf8
net.(*sysListener).listenTCP(0xc00013baf8, {0x44136d0, 0xc00001c608}, 0x43b2e50)
/Users/zhangcunli/Documents/go/src/net/tcpsock_posix.go:169 +0x85
net.(*ListenConfig).Listen(0xc00013bb70, {0x44136d0, 0xc00001c608}, {0x4391dd3, 0xc00013bb78}, {0xc000214c40, 0x203000})
/Users/zhangcunli/Documents/go/src/net/dial.go:639 +0x25e
net.Listen({0x4391dd3, 0x0}, {0xc000214c40, 0x400ef14})
/Users/zhangcunli/Documents/go/src/net/dial.go:712 +0x4b
github.com/AlexStocks/getty/transport.(*server).listenTCP(0xc00025c2a0)
/Users/zhangcunli/Documents/work/edget/getty/transport/server.go:187 +0x134
github.com/AlexStocks/getty/transport.(*server).listen(0x437e740)
/Users/zhangcunli/Documents/work/edget/getty/transport/server.go:233 +0x39
github.com/AlexStocks/getty/transport.(*server).RunEventLoop(0xc00025c2a0, 0x2)
/Users/zhangcunli/Documents/work/edget/getty/transport/server.go:469 +0x27
main.initServer()
/Users/zhangcunli/Documents/work/edget/getty/examples/echo/tcp-echo/server/app/server.go:160 +0x316
main.main()
/Users/zhangcunli/Documents/work/edget/getty/examples/echo/tcp-echo/server/app/server.go:73 +0x6c

goroutine 9 [chan receive]:
github.com/dubbogo/gost/time.NewWheel.func1()
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/dubbogo/gost/time/wheel.go:61 +0x4d
created by github.com/dubbogo/gost/time.NewWheel
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/dubbogo/gost/time/wheel.go:59 +0x16f

goroutine 19 [runnable]:
syscall.syscall(0x409f580, 0x6, 0xc0001a62c0, 0x82)
/Users/zhangcunli/Documents/go/src/runtime/sys_darwin.go:22 +0x3b
syscall.write(0xc000212600, {0xc0001a62c0, 0xc000194d70, 0x404a0d9})
/Users/zhangcunli/Documents/go/src/syscall/zsyscall_darwin_amd64.go:1635 +0x49
syscall.Write(...)
/Users/zhangcunli/Documents/go/src/syscall/syscall_unix.go:214
internal/poll.ignoringEINTRIO(...)
/Users/zhangcunli/Documents/go/src/internal/poll/fd_unix.go:582
internal/poll.(*FD).Write(0xc000212600, {0xc0001a62c0, 0x82, 0x2c0})
/Users/zhangcunli/Documents/go/src/internal/poll/fd_unix.go:275 +0x36e
os.(*File).write(...)
/Users/zhangcunli/Documents/go/src/os/file_posix.go:49
os.(*File).Write(0xc000216040, {0xc0001a62c0, 0x1, 0x400cb6a})
/Users/zhangcunli/Documents/go/src/os/file.go:176 +0x65
fmt.Fprint({0x440bba0, 0xc000216040}, {0xc000194e88, 0x1, 0x1})
/Users/zhangcunli/Documents/go/src/fmt/print.go:233 +0x75
github.com/AlexStocks/log4go.NewFileLogWriter.func1()
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/filelog.go:217 +0x447
created by github.com/AlexStocks/log4go.NewFileLogWriter
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/filelog.go:168 +0x285

goroutine 20 [select]:
github.com/AlexStocks/log4go.NewFileLogWriter.func1()
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/filelog.go:178 +0x10c
created by github.com/AlexStocks/log4go.NewFileLogWriter
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/filelog.go:168 +0x285

goroutine 21 [select]:
github.com/AlexStocks/log4go.NewFileLogWriter.func1()
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/filelog.go:178 +0x10c
created by github.com/AlexStocks/log4go.NewFileLogWriter
/Users/zhangcunli/Documents/work/edget/getty/vendor/github.com/AlexStocks/log4go/filelog.go:168 +0x285

goroutine 22 [runnable]:
net/http.ListenAndServe({0x0, 0x0}, {0x0, 0x0})
/Users/zhangcunli/Documents/go/src/net/http/server.go:3182
main.initProfiling.func1()
/Users/zhangcunli/Documents/work/edget/getty/examples/echo/tcp-echo/server/app/server.go:91 +0x2f
created by main.initProfiling
/Users/zhangcunli/Documents/work/edget/getty/examples/echo/tcp-echo/server/app/server.go:90 +0x17e
➜ echo_server--20210922-1007-test git:(master) ✗

@Lvnszn @AlexStocks

[Lvnszn]

I couldn't reproduce the problem.

Here is my wechat: jax_110, plz feel free call me and talk with this issue.

[zhangcunli]

Another question:

1. I just run server ./sbin/echo_server and client ./sbin/echo_client.
2. Both client and server output error log [session.conn.read] = error:unexpected EOF. Why?

[2021/09/23 19:58:29 CST] [INFO] (config.go:main.initConf:174) config{&main.Config{AppName:"ECHO-CLIENT", LocalHost:"127.0.0.1", ServerHost:"127.0.0.1", ServerPort:10000, ProfilePort:20080, ConnectionNum:1, HeartbeatPeriod:"10s", heartbeatPeriod:10000000000, SessionTimeout:"20s", sessionTimeout:20000000000, EchoString:"Hello, getty!", EchoTimes:3, FailFastTimeout:"3s", failFastTimeout:3000000000, GettySessionParam:main.GettySessionParam{CompressEncoding:true, TcpNoDelay:true, TcpKeepAlive:true, KeepAlivePeriod:"120s", keepAlivePeriod:120000000000, TcpRBufSize:262144, TcpWBufSize:65536, PkgWQSize:256, TcpReadTimeout:"1s", tcpReadTimeout:1000000000, TcpWriteTimeout:"5s", tcpWriteTimeout:5000000000, WaitTimeout:"1s", waitTimeout:1000000000, MaxMsgLen:128, SessionName:"echo-client"}}}
[2021/09/23 19:58:29 CST] [INFO] (main.go:main.initProfiling:86) App Profiling startup on address{127.0.0.1:20080/debug/pprof/}
[2021/09/23 19:58:29 CST] [INFO] (handler.go:main.(*EchoMessageHandler).OnOpen:52) OnOpen session{session {echo-client:TCP_CLIENT:1:127.0.0.1:59602<->127.0.0.1:10000}, Read Bytes: 0, Write Bytes: 0, Read Pkgs: 0, Write Pkgs: 0} add.
[2021-09-23/19:58:29 main.main: main.go: 71] ECHO-CLIENT starts successfull! its version=1.3.0

[2021/09/23 19:58:29 CST] [INFO] (main.go:main.main:72) ECHO-CLIENT starts successfull! its version=1.3.0

[2021-09-23/19:58:30 main.test: main.go: 214] after loop 3 times, echo cost 0 ms
[2021/09/23 19:58:30 CST] [INFO] (main.go:main.test:213) after loop 3 times, echo cost 0 ms
[2021/09/23 19:58:30 CST] [INFO] (readwriter.go:main.(*EchoPackageHandler).Write:82) WriteEchoPkgTimeMs = 194.963µs, buf:Hello, getty!
[2021/09/23 19:58:30 CST] [INFO] (readwriter.go:main.(*EchoPackageHandler).Write:82) WriteEchoPkgTimeMs = 13.99µs, buf:Hello, getty!
[2021/09/23 19:58:30 CST] [INFO] (readwriter.go:main.(*EchoPackageHandler).Write:82) WriteEchoPkgTimeMs = 6.781µs, buf:Hello, getty!
[2021/09/23 19:58:30 CST] [EROR] (session.go:github.com/AlexStocks/getty/transport.(*session).handleTCPPackage:750) {echo-client:TCP_CLIENT:1:127.0.0.1:59602<->127.0.0.1:10000}, [session.conn.read] = error:unexpected EOF
github.com/AlexStocks/getty/transport.(*gettyTCPConn).recv
/Users/zhangcunli/Documents/work/edget/getty/transport/connection.go:263
github.com/AlexStocks/getty/transport.(*session).handleTCPPackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:739
github.com/AlexStocks/getty/transport.(*session).handlePackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:688
runtime.goexit
/Users/zhangcunli/Documents/work/go1.16.8/src/runtime/asm_amd64.s:1371
github.com/AlexStocks/getty/transport.(*session).handleTCPPackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:750
github.com/AlexStocks/getty/transport.(*session).handlePackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:688
runtime.goexit
/Users/zhangcunli/Documents/work/go1.16.8/src/runtime/asm_amd64.s:1371
[2021/09/23 19:58:30 CST] [INFO] (session.go:github.com/AlexStocks/getty/transport.(*session).handlePackage.func1:671) {echo-client:TCP_CLIENT:1:127.0.0.1:59602<->127.0.0.1:10000}, [session.handlePackage] gr will exit now, left gr num 1
[2021/09/23 19:58:30 CST] [INFO] (session.go:github.com/AlexStocks/getty/transport.(*session).handleLoop:560) session session-closed, Read Bytes: 0, Write Bytes: 138, Read Pkgs: 0, Write Pkgs: 3, [session.handleLoop] got done signal. wQ is nil.
[2021/09/23 19:58:30 CST] [INFO] (handler.go:main.(*EchoMessageHandler).OnClose:63) OnClose session{session session-closed, Read Bytes: 0, Write Bytes: 138, Read Pkgs: 0, Write Pkgs: 3} is closing......
[2021/09/23 19:58:30 CST] [INFO] (client.go:main.(*EchoClient).removeSession:112) after remove session{session session-closed, Read Bytes: 0, Write Bytes: 138, Read Pkgs: 0, Write Pkgs: 3}, left session number:0
[2021/09/23 19:58:30 CST] [INFO] (session.go:github.com/AlexStocks/getty/transport.(*session).handleLoop.func1:542) session session-closed, Read Bytes: 0, Write Bytes: 138, Read Pkgs: 0, Write Pkgs: 3, [session.handleLoop] goroutine exit now, left gr num 0
[2021/09/23 19:58:30 CST] [INFO] (handler.go:main.(*EchoMessageHandler).OnOpen:52) OnOpen session{session {echo-client:TCP_CLIENT:2:127.0.0.1:59605<->127.0.0.1:10000}, Read Bytes: 0, Write Bytes: 0, Read Pkgs: 0, Write Pkgs: 0} add.
[2021/09/23 19:58:30 CST] [EROR] (session.go:github.com/AlexStocks/getty/transport.(*session).handlePackage.func1:674) session-closed, [session.handlePackage] error:unexpected EOF
github.com/AlexStocks/getty/transport.(*gettyTCPConn).recv
/Users/zhangcunli/Documents/work/edget/getty/transport/connection.go:263
github.com/AlexStocks/getty/transport.(*session).handleTCPPackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:739
github.com/AlexStocks/getty/transport.(*session).handlePackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:688
runtime.goexit
/Users/zhangcunli/Documents/work/go1.16.8/src/runtime/asm_amd64.s:1371
github.com/AlexStocks/getty/transport.(*session).handleTCPPackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:793
github.com/AlexStocks/getty/transport.(*session).handlePackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:688
runtime.goexit
/Users/zhangcunli/Documents/work/go1.16.8/src/runtime/asm_amd64.s:1371
github.com/AlexStocks/getty/transport.(*session).handlePackage.func1
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:674
github.com/AlexStocks/getty/transport.(*session).handlePackage
/Users/zhangcunli/Documents/work/edget/getty/transport/session.go:696
runtime.goexit
/Users/zhangcunli/Documents/work/go1.16.8/src/runtime/asm_amd64.s:1371

[AlexStocks]

hey guy, it is not a problem. what u should do, IMO, read the codes and get what's the meaning of the panic stack.