/
share.go
75 lines (66 loc) · 1.48 KB
/
share.go
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package main
import (
"errors"
"io"
"net"
"runtime"
"sync"
"unsafe"
"github.com/rs/zerolog/log"
)
var (
ErrNoAuthRequred = errors.New("server unsupport auth")
ErrInvalidSecret = errors.New("invalid secret")
)
func relay(c1, c2 io.ReadWriteCloser) (inCount int64, outCount int64, errs []error) {
var wait sync.WaitGroup
recordErrs := make([]error, 2)
pipe := func(number int, from, to io.ReadWriteCloser, count *int64) {
defer func() {
if err := recover(); err != nil {
log.Error().Any("err", err).Msg("pipe panic.")
}
}()
defer func(to io.ReadWriteCloser) {
_ = to.Close()
}(to)
defer func(from io.ReadWriteCloser) {
_ = from.Close()
}(from)
defer wait.Done()
*count, recordErrs[number] = io.Copy(to, from)
}
wait.Add(2)
go pipe(0, c1, c2, &inCount)
go pipe(1, c2, c1, &outCount)
wait.Wait()
for _, err := range recordErrs {
if errors.Is(err, io.EOF) || errors.Is(err, net.ErrClosed) {
continue
}
if err != nil {
errs = append(errs, err)
}
}
return
}
const (
stackSize = 4096
)
func Go(name string, f func()) {
go func() {
name := "routine-[" + name + "]"
defer func() {
if err := recover(); err != nil {
var buf [stackSize]byte
n := runtime.Stack(buf[:], false)
log.Error().Str("job", name).Any("err", err).Str("stack", string(buf[:n])).Msg("routine panic.")
}
}()
log.Info().Str("job", name).Msg("routine start.")
f()
}()
}
func s2b(s string) []byte {
return unsafe.Slice(unsafe.StringData(s), len(s))
}