init
This commit is contained in:
304
comet/tcp.go
Normal file
304
comet/tcp.go
Normal file
@@ -0,0 +1,304 @@
|
||||
package comet
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/Terry-Mao/goim/pkg/bufio"
|
||||
"github.com/Terry-Mao/goim/pkg/bytes"
|
||||
xtime "github.com/Terry-Mao/goim/pkg/time"
|
||||
"github.com/golang/protobuf/proto"
|
||||
"github.com/rs/zerolog/log"
|
||||
"gitlab.33.cn/chat/im/api/comet/grpc"
|
||||
"gitlab.33.cn/chat/im/dtask"
|
||||
)
|
||||
|
||||
// InitTCP listen all tcp.bind and start accept connections.
|
||||
func InitTCP(server *Comet, addrs []string, accept int) (err error) {
|
||||
var (
|
||||
bind string
|
||||
listener *net.TCPListener
|
||||
addr *net.TCPAddr
|
||||
)
|
||||
for _, bind = range addrs {
|
||||
if addr, err = net.ResolveTCPAddr("tcp", bind); err != nil {
|
||||
log.Error().Stack().Err(err).Msg(fmt.Sprintf("net.ResolveTCPAddr(tcp, %s)", bind))
|
||||
return
|
||||
}
|
||||
if listener, err = net.ListenTCP("tcp", addr); err != nil {
|
||||
log.Error().Stack().Err(err).Msg(fmt.Sprintf("net.ListenTCP(tcp, %s)", bind))
|
||||
return
|
||||
}
|
||||
log.Info().Str("bind", bind).Msg("start tcp listen")
|
||||
// split N core accept
|
||||
for i := 0; i < accept; i++ {
|
||||
go acceptTCP(server, listener)
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Accept accepts connections on the listener and serves requests
|
||||
// for each incoming connection. Accept blocks; the caller typically
|
||||
// invokes it in a go statement.
|
||||
func acceptTCP(server *Comet, lis *net.TCPListener) {
|
||||
var (
|
||||
conn *net.TCPConn
|
||||
err error
|
||||
r int
|
||||
)
|
||||
for {
|
||||
if conn, err = lis.AcceptTCP(); err != nil {
|
||||
// if listener close then return
|
||||
log.Error().Stack().Err(err).Msg(fmt.Sprintf("listener.Accept(\"%s\")", lis.Addr().String()))
|
||||
continue
|
||||
//return
|
||||
}
|
||||
log.Info().Str("remoteIP", conn.RemoteAddr().String()).Msg("accept tcp conn")
|
||||
if err = conn.SetKeepAlive(server.c.TCP.KeepAlive); err != nil {
|
||||
log.Error().Stack().Err(err).Msg("conn.SetKeepAlive()")
|
||||
return
|
||||
}
|
||||
if err = conn.SetReadBuffer(server.c.TCP.Rcvbuf); err != nil {
|
||||
log.Error().Stack().Err(err).Msg("conn.SetReadBuffer()")
|
||||
return
|
||||
}
|
||||
if err = conn.SetWriteBuffer(server.c.TCP.Sndbuf); err != nil {
|
||||
log.Error().Stack().Err(err).Msg("conn.SetWriteBuffer()")
|
||||
return
|
||||
}
|
||||
go serveTCP(server, conn, r)
|
||||
if r++; r == maxInt {
|
||||
r = 0
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func serveTCP(s *Comet, conn *net.TCPConn, r int) {
|
||||
var (
|
||||
// timer
|
||||
tr = s.round.Timer(r)
|
||||
rp = s.round.Reader(r)
|
||||
wp = s.round.Writer(r)
|
||||
)
|
||||
s.ServeTCP(conn, rp, wp, tr)
|
||||
}
|
||||
|
||||
// ServeTCP serve a tcp connection.
|
||||
func (s *Comet) ServeTCP(conn *net.TCPConn, rp, wp *bytes.Pool, tr *xtime.Timer) {
|
||||
var (
|
||||
err error
|
||||
hb time.Duration
|
||||
p *grpc.Proto
|
||||
b *Bucket
|
||||
trd *xtime.TimerData
|
||||
lastHb = time.Now()
|
||||
rb = rp.Get()
|
||||
wb = wp.Get()
|
||||
ch = NewChannel(s.c.Protocol.CliProto, s.c.Protocol.SvrProto)
|
||||
rr = &ch.Reader
|
||||
wr = &ch.Writer
|
||||
tsk *dtask.Task
|
||||
)
|
||||
ch.Reader.ResetBuffer(conn, rb.Bytes())
|
||||
ch.Writer.ResetBuffer(conn, wb.Bytes())
|
||||
ctx, cancel := context.WithCancel(context.Background())
|
||||
defer cancel()
|
||||
// handshake
|
||||
step := 0
|
||||
trd = tr.Add(time.Duration(s.c.Protocol.HandshakeTimeout), func() {
|
||||
conn.Close()
|
||||
log.Error().Int("step", step).Str("key", ch.Key).Str("remoteIP", conn.RemoteAddr().String()).Msg("tcp handshake timeout")
|
||||
})
|
||||
ch.IP, ch.Port, _ = net.SplitHostPort(conn.RemoteAddr().String())
|
||||
// must not setadv, only used in auth
|
||||
step = 1
|
||||
if p, err = ch.CliProto.Set(); err == nil {
|
||||
if ch.Key, hb, err = s.authTCP(ctx, rr, wr, p); err == nil {
|
||||
log.Info().Str("key", ch.Key).Str("remoteIP", conn.RemoteAddr().String()).Msg("authoried")
|
||||
b = s.Bucket(ch.Key)
|
||||
err = b.Put(ch)
|
||||
}
|
||||
}
|
||||
step = 2
|
||||
if err != nil {
|
||||
conn.Close()
|
||||
rp.Put(rb)
|
||||
wp.Put(wb)
|
||||
tr.Del(trd)
|
||||
log.Error().Str("key", ch.Key).Err(err).Msg("handshake failed")
|
||||
return
|
||||
}
|
||||
trd.Key = ch.Key
|
||||
tr.Set(trd, hb)
|
||||
step = 3
|
||||
// hanshake ok start dispatch goroutine
|
||||
tsk = dtask.NewTask()
|
||||
go s.dispatchTCP(conn, wr, wp, wb, ch, tsk)
|
||||
serverHeartbeat := s.RandServerHearbeat()
|
||||
for {
|
||||
if p, err = ch.CliProto.Set(); err != nil {
|
||||
break
|
||||
}
|
||||
if err = p.ReadTCP(rr); err != nil {
|
||||
log.Info().Err(err).Msg("ReadTCP failed")
|
||||
break
|
||||
}
|
||||
if p.Op == int32(grpc.Op_Heartbeat) {
|
||||
tr.Set(trd, hb)
|
||||
p.Op = int32(grpc.Op_HeartbeatReply)
|
||||
p.Body = nil
|
||||
// NOTE: send server heartbeat for a long time
|
||||
if now := time.Now(); now.Sub(lastHb) > serverHeartbeat {
|
||||
if err1 := s.Heartbeat(ctx, ch.Key); err1 == nil {
|
||||
lastHb = now
|
||||
}
|
||||
}
|
||||
step++
|
||||
} else {
|
||||
if err = s.Operate(ctx, p, ch, tsk); err != nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
// msg sent from client will be dispatched to client itself
|
||||
ch.CliProto.SetAdv()
|
||||
ch.Signal()
|
||||
}
|
||||
if err != nil && err != io.EOF && !strings.Contains(err.Error(), "closed") {
|
||||
log.Error().Str("key", ch.Key).Err(err).Msg("server tcp failed")
|
||||
}
|
||||
b.Del(ch)
|
||||
tr.Del(trd)
|
||||
rp.Put(rb)
|
||||
conn.Close()
|
||||
ch.Close()
|
||||
if err = s.Disconnect(ctx, ch.Key); err != nil {
|
||||
log.Error().Str("key", ch.Key).Err(err).Msg("operator do disconnect")
|
||||
}
|
||||
}
|
||||
|
||||
// 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 (s *Comet) dispatchTCP(conn *net.TCPConn, wr *bufio.Writer, wp *bytes.Pool, wb *bytes.Buffer, ch *Channel, tsk *dtask.Task) {
|
||||
var (
|
||||
err error
|
||||
finish bool
|
||||
online int32
|
||||
)
|
||||
for {
|
||||
var p = ch.Ready()
|
||||
switch p {
|
||||
case grpc.ProtoFinish:
|
||||
finish = true
|
||||
goto failed
|
||||
case grpc.ProtoReady:
|
||||
// fetch message from svrbox(client send)
|
||||
for {
|
||||
if p, err = ch.CliProto.Get(); err != nil {
|
||||
break
|
||||
}
|
||||
if p.Op == int32(grpc.Op_HeartbeatReply) {
|
||||
if err = p.WriteTCPHeart(wr, online); err != nil {
|
||||
goto failed
|
||||
}
|
||||
} else if p.Op == int32(grpc.Op_ReceiveMsgReply) {
|
||||
//skip
|
||||
} else if p.Op == int32(grpc.Op_SendMsg) {
|
||||
//skip
|
||||
} else {
|
||||
if err = p.WriteTCP(wr); err != nil {
|
||||
goto failed
|
||||
}
|
||||
}
|
||||
p.Body = nil // avoid memory leak
|
||||
ch.CliProto.GetAdv()
|
||||
}
|
||||
default:
|
||||
switch p.Op {
|
||||
case int32(grpc.Op_SendMsgReply):
|
||||
if err = p.WriteTCP(wr); err != nil {
|
||||
goto failed
|
||||
}
|
||||
case int32(grpc.Op_RePush):
|
||||
pro := proto.Clone(p)
|
||||
if p, ok := pro.(*grpc.Proto); ok {
|
||||
p.Op = int32(grpc.Op_ReceiveMsg)
|
||||
if err = p.WriteTCP(wr); err != nil {
|
||||
goto failed
|
||||
}
|
||||
} else {
|
||||
log.Error().Msg("proto can`t clone Proto")
|
||||
}
|
||||
case int32(grpc.Op_ReceiveMsg):
|
||||
if err = p.WriteTCP(wr); err != nil {
|
||||
goto failed
|
||||
}
|
||||
p.Op = int32(grpc.Op_RePush)
|
||||
seq := strconv.FormatInt(int64(p.Seq), 10)
|
||||
if j := tsk.Get(seq); j != nil {
|
||||
continue
|
||||
}
|
||||
//push into task pool
|
||||
job, inserted := tsk.AddJobRepeat(time.Second*5, 0, func() {
|
||||
if _, err = ch.Push(p); err != nil {
|
||||
log.Error().Err(err).Msg("task job ch.Push error")
|
||||
return
|
||||
}
|
||||
})
|
||||
if !inserted {
|
||||
log.Error().Err(err).Msg("tsk.AddJobRepeat error")
|
||||
goto failed
|
||||
}
|
||||
tsk.Add(seq, job)
|
||||
default:
|
||||
continue
|
||||
}
|
||||
}
|
||||
// only hungry flush response
|
||||
if err = wr.Flush(); err != nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
failed:
|
||||
if err != nil {
|
||||
log.Error().Str("key", ch.Key).Err(err).Msg("dispatch tcp failed")
|
||||
}
|
||||
tsk.Stop()
|
||||
conn.Close()
|
||||
wp.Put(wb)
|
||||
// must ensure all channel message discard, for reader won't blocking Signal
|
||||
for !finish {
|
||||
finish = (ch.Ready() == grpc.ProtoFinish)
|
||||
}
|
||||
}
|
||||
|
||||
// auth for goim handshake with client, use rsa & aes.
|
||||
func (s *Comet) authTCP(ctx context.Context, rr *bufio.Reader, wr *bufio.Writer, p *grpc.Proto) (key string, hb time.Duration, err error) {
|
||||
for {
|
||||
if err = p.ReadTCP(rr); err != nil {
|
||||
return
|
||||
}
|
||||
if p.Op == int32(grpc.Op_Auth) {
|
||||
break
|
||||
} else {
|
||||
log.Error().Int32("option", p.Op).Msg("tcp request option not auth")
|
||||
}
|
||||
}
|
||||
if key, hb, err = s.Connect(ctx, p); err != nil {
|
||||
log.Error().Err(err).Msg("can not call logic.Connect")
|
||||
return
|
||||
}
|
||||
p.Op = int32(grpc.Op_AuthReply)
|
||||
p.Body = nil
|
||||
if err = p.WriteTCP(wr); err != nil {
|
||||
return
|
||||
}
|
||||
err = wr.Flush()
|
||||
return
|
||||
}
|
||||
Reference in New Issue
Block a user