/
ws_common.go
72 lines (66 loc) · 1.16 KB
/
ws_common.go
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package websocket
import (
"golang.org/x/net/context"
"github.com/Sirupsen/logrus"
"github.com/bearded-web/bearded/pkg/transport"
"github.com/gorilla/websocket"
)
func handleConnection(ctx context.Context, ws *websocket.Conn,
in chan<- *transport.Message, out <-chan *transport.Message) {
ch := make(chan error, 2)
// start read loop
go func(ch chan<- error) {
var chErr error
defer func() {
if chErr != nil {
ch <- chErr
}
}()
for {
select {
case <-ctx.Done():
return
default:
}
msg := &transport.Message{}
if err := ws.ReadJSON(msg); err != nil {
chErr = err
return
}
select {
case <-ctx.Done():
return
case in <- msg:
}
}
}(ch)
// start write loop
go func(ch chan<- error) {
var chErr error
defer func() {
if chErr != nil {
ch <- chErr
}
}()
for {
var msg *transport.Message
select {
case <-ctx.Done():
return
case msg = <-out:
}
if err := ws.WriteJSON(msg); err != nil {
chErr = err
return
}
}
}(ch)
select {
case <-ctx.Done():
if ctx.Err() != context.Canceled {
logrus.Error(ctx.Err())
}
case err := <-ch:
logrus.Error(err)
}
}