// auth for goim handshake with client, use rsa & aes.
func (server *Server) authTCP(rr *bufio.Reader, wr *bufio.Writer, p *proto.Proto) (key string, rid int32, heartbeat time.Duration, err error) {
if err = p.ReadTCP(rr); err != nil {
return
}
if p.Operation != define.OP_AUTH {
log.Warn("auth operation not valid: %d", p.Operation)
err = ErrOperation
return
}
if key, rid, heartbeat, err = server.operator.Connect(p); err != nil {
return
}
p.Body = nil
p.Operation = define.OP_AUTH_REPLY
if err = p.WriteTCP(wr); err != nil {
return
}
err = wr.Flush()
return
}
// TODO linger close?
func (server *Server) serveTCP(conn *net.TCPConn, rp, wp *bytes.Pool, tr *itime.Timer) {
var (
err error
key string
hb time.Duration // heartbeat
p *proto.Proto
b *Bucket
trd *itime.TimerData
rb = rp.Get()
wb = wp.Get()
ch = NewChannel(server.Options.CliProto, server.Options.SvrProto, define.NoRoom)
rr = &ch.Reader
wr = &ch.Writer
)
ch.Reader.ResetBuffer(conn, rb.Bytes())
ch.Writer.ResetBuffer(conn, wb.Bytes())
// handshake
trd = tr.Add(server.Options.HandshakeTimeout, func() {
conn.Close()
})
// must not setadv, only used in auth
if p, err = ch.CliProto.Set(); err == nil {
if key, ch.RoomId, hb, err = server.authTCP(rr, wr, p); err == nil {
b = server.Bucket(key)
err = b.Put(key, ch, tr)
}
}
if err != nil {
conn.Close()
rp.Put(rb)
wp.Put(wb)
tr.Del(trd)
log.Error("key: %s handshake failed error(%v)", key, err)
return
}
trd.Key = key
tr.Set(trd, hb)
// hanshake ok start dispatch goroutine
go server.dispatchTCP(key, conn, wr, wp, wb, ch)
for {
if p, err = ch.CliProto.Set(); err != nil {
break
}
if err = p.ReadTCP(rr); err != nil {
break
}
//p.Time = *globalNowTime
if p.Operation == define.OP_HEARTBEAT {
tr.Set(trd, hb)
p.Body = nil
p.Operation = define.OP_HEARTBEAT_REPLY
if Debug {
log.Debug("key: %s receive heartbeat", key)
}
} else {
if err = server.operator.Operate(p); err != nil {
break
}
}
ch.CliProto.SetAdv()
ch.Signal()
}
if err != nil && err != io.EOF {
log.Error("key: %s server tcp failed error(%v)", key, err)
}
b.Del(key)
tr.Del(trd)
rp.Put(rb)
conn.Close()
ch.Close()
if err = server.operator.Disconnect(key, ch.RoomId); err != nil {
log.Error("key: %s operator do disconnect error(%v)", key, err)
}
if Debug {
log.Debug("key: %s server tcp goroutine exit", key)
}
return
}
// dispatch accepts connections on the listener and serves requests
// for each incoming connection. dispatch blocks; the caller typically
// invokes it in a go statement.
func (server *Server) dispatchTCP(key string, conn *net.TCPConn, wr *bufio.Writer, wp *bytes.Pool, wb *bytes.Buffer, ch *Channel) {
var (
p *proto.Proto
err error
)
if Debug {
log.Debug("key: %s start dispatch tcp goroutine", key)
}
for {
p = ch.Ready()
if Debug {
log.Debug("key:%s dispatch msg:%v", key, *p)
}
switch p {
case proto.ProtoFinish:
if Debug {
log.Debug("key: %s wakeup exit dispatch goroutine", key)
}
goto failed
case proto.ProtoReady:
// fetch message from svrbox(client send)
for {
if p, err = ch.CliProto.Get(); err != nil {
err = nil // must be empty error
break
}
//LogSlow(SlowLogTypeReceive, key, p)
if err = p.WriteTCP(wr); err != nil {
goto failed
}
p.Body = nil // avoid memory leak
ch.CliProto.GetAdv()
}
default:
// server send
//LogSlow(SlowLogTypeReceive, key, p)
if err = p.WriteTCP(wr); err != nil {
goto failed
}
}
// only hungry flush response
if err = wr.Flush(); err != nil {
break
}
}
failed:
if err != nil {
log.Error("key: %s dispatch tcp error(%v)", key, err)
}
conn.Close()
wp.Put(wb)
// must ensure all channel message discard, for reader won't blocking Signal
for {
if p == proto.ProtoFinish {
break
}
p = ch.Ready()
}
if Debug {
log.Debug("key: %s dispatch goroutine exit", key)
}
return
}