326 lines
8.1 KiB
Go
326 lines
8.1 KiB
Go
package server
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import (
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"crypto/tls"
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"io"
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"net"
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"time"
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"go-common/app/service/main/broadcast/libs/bytes"
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itime "go-common/app/service/main/broadcast/libs/time"
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"go-common/app/service/main/broadcast/libs/websocket"
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"go-common/app/service/main/broadcast/model"
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"go-common/library/log"
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)
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// InitWebsocketV1 listen all tcp.bind and start accept connections.
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func InitWebsocketV1(s *Server, addrs []string, accept int) (err error) {
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var (
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bind string
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listener *net.TCPListener
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addr *net.TCPAddr
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)
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for _, bind = range addrs {
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if addr, err = net.ResolveTCPAddr("tcp", bind); err != nil {
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log.Error("net.ResolveTCPAddr(\"tcp\", \"%s\") error(%v)", bind, err)
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return
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}
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if listener, err = net.ListenTCP("tcp", addr); err != nil {
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log.Error("net.ListenTCP(\"tcp\", \"%s\") error(%v)", bind, err)
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return
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}
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log.Info("start ws listen: \"%s\"", bind)
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// split N core accept
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for i := 0; i < accept; i++ {
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go acceptWebsocketV1(s, listener)
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}
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}
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return
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}
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// InitWebsocketWithTLSV1 .
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func InitWebsocketWithTLSV1(s *Server, addrs []string, certFile, privateFile string, accept int) (err error) {
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var (
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bind string
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listener net.Listener
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cert tls.Certificate
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)
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cert, err = tls.LoadX509KeyPair(certFile, privateFile)
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if err != nil {
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log.Error("Error loading certificate. error(%v)", err)
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return
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}
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tlsCfg := &tls.Config{Certificates: []tls.Certificate{cert}}
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for _, bind = range addrs {
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if listener, err = tls.Listen("tcp", bind, tlsCfg); err != nil {
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log.Error("net.ListenTCP(\"tcp\", \"%s\") error(%v)", bind, err)
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return
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}
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log.Info("start wss listen: \"%s\"", bind)
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// split N core accept
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for i := 0; i < accept; i++ {
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go acceptWebsocketWithTLSV1(s, listener)
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}
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}
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return
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}
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// Accept accepts connections on the listener and serves requests
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// for each incoming connection. Accept blocks; the caller typically
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// invokes it in a go statement.
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func acceptWebsocketV1(s *Server, lis *net.TCPListener) {
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var (
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conn *net.TCPConn
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err error
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r int
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)
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for {
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if conn, err = lis.AcceptTCP(); err != nil {
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// if listener close then return
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log.Error("listener.Accept(\"%s\") error(%v)", lis.Addr().String(), err)
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time.Sleep(time.Second)
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continue
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}
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if err = conn.SetKeepAlive(s.c.TCP.Keepalive); err != nil {
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log.Error("conn.SetKeepAlive() error(%v)", err)
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return
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}
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if err = conn.SetReadBuffer(s.c.TCP.Rcvbuf); err != nil {
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log.Error("conn.SetReadBuffer() error(%v)", err)
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return
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}
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if err = conn.SetWriteBuffer(s.c.TCP.Sndbuf); err != nil {
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log.Error("conn.SetWriteBuffer() error(%v)", err)
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return
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}
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go serveWebsocketV1(s, conn, r)
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if r++; r == _maxInt {
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r = 0
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}
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}
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}
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// Accept accepts connections on the listener and serves requests
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// for each incoming connection. Accept blocks; the caller typically
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// invokes it in a go statement.
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func acceptWebsocketWithTLSV1(server *Server, lis net.Listener) {
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var (
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conn net.Conn
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err error
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r int
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)
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for {
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if conn, err = lis.Accept(); err != nil {
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// if listener close then return
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log.Error("listener.Accept(\"%s\") error(%v)", lis.Addr().String(), err)
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return
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}
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go serveWebsocketV1(server, conn, r)
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if r++; r == _maxInt {
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r = 0
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}
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}
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}
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func serveWebsocketV1(server *Server, conn net.Conn, r int) {
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var (
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// timer
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tr = server.round.Timer(r)
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rp = server.round.Reader(r)
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wp = server.round.Writer(r)
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)
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server.serveWebsocketV1(conn, rp, wp, tr)
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}
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// TODO linger close?
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func (s *Server) serveWebsocketV1(conn net.Conn, rp, wp *bytes.Pool, tr *itime.Timer) {
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var (
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err error
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roomID string
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hb time.Duration // heartbeat
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p *model.Proto
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b *Bucket
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trd *itime.TimerData
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rb = rp.Get()
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ch = NewChannel(s.c.ProtoSection.CliProto, s.c.ProtoSection.SvrProto)
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rr = &ch.Reader
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wr = &ch.Writer
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ws *websocket.Conn // websocket
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req *websocket.Request
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rpt *Report
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)
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// reader
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ch.Reader.ResetBuffer(conn, rb.Bytes())
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// handshake
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trd = tr.Add(time.Duration(s.c.ProtoSection.HandshakeTimeout), func() {
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conn.SetDeadline(time.Now().Add(time.Millisecond))
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conn.Close()
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})
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// websocket
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if req, err = websocket.ReadRequest(rr); err != nil || req.RequestURI != "/sub" {
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conn.Close()
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tr.Del(trd)
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rp.Put(rb)
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if err != io.EOF {
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log.Error("http.ReadRequest(rr) error(%v)", err)
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}
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return
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}
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// writer
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wb := wp.Get()
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ch.Writer.ResetBuffer(conn, wb.Bytes())
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if ws, err = websocket.Upgrade(conn, rr, wr, req); err != nil {
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conn.Close()
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tr.Del(trd)
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rp.Put(rb)
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wp.Put(wb)
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if err != io.EOF {
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log.Error("websocket.NewServerConn error(%v)", err)
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}
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return
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}
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ch.V1 = true
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ch.IP, _, _ = net.SplitHostPort(conn.RemoteAddr().String())
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// must not setadv, only used in auth
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if p, err = ch.CliProto.Set(); err == nil {
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if ch.Key, roomID, ch.Mid, hb, rpt, err = s.authWebsocketV1(ws, p, ch.IP); err == nil {
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b = s.Bucket(ch.Key)
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err = b.Put(roomID, ch)
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}
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}
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if err != nil {
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if err != io.EOF && err != websocket.ErrMessageClose {
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log.Error("key: %s ip: %s handshake failed error(%v)", ch.Key, conn.RemoteAddr().String(), err)
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}
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ws.Close()
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rp.Put(rb)
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wp.Put(wb)
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tr.Del(trd)
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return
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}
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trd.Key = ch.Key
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tr.Set(trd, hb)
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var online int32
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if ch.Room != nil {
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online = ch.Room.OnlineNum()
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}
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report(actionConnect, rpt, online)
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// hanshake ok start dispatch goroutine
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go s.dispatchWebsocketV1(ch.Key, ws, wp, wb, ch)
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for {
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if p, err = ch.CliProto.Set(); err != nil {
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break
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}
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if err = p.ReadWebsocketV1(ws); err != nil {
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break
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}
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if p.Operation == model.OpHeartbeat {
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tr.Set(trd, hb)
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p.Operation = model.OpHeartbeatReply
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} else {
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if err = s.Operate(p, ch, b); err != nil {
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break
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}
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}
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ch.CliProto.SetAdv()
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ch.Signal()
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}
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if err != nil && err != io.EOF && err != websocket.ErrMessageClose {
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log.Error("key: %s server tcp failed error(%v)", ch.Key, err)
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}
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b.Del(ch)
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tr.Del(trd)
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ws.Close()
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ch.Close()
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rp.Put(rb)
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//if err = s.Disconnect(context.Background(), ch.Mid, roomID); err != nil {
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// log.Error("key: %s operator do disconnect error(%v)", ch.Key, err)
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//}
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if ch.Room != nil {
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online = ch.Room.OnlineNum()
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}
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report(actionDisconnect, rpt, online)
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}
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// dispatch accepts connections on the listener and serves requests
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// for each incoming connection. dispatch blocks; the caller typically
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// invokes it in a go statement.
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func (s *Server) dispatchWebsocketV1(key string, ws *websocket.Conn, wp *bytes.Pool, wb *bytes.Buffer, ch *Channel) {
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var (
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err error
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finish bool
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online int32
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)
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for {
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var p = ch.Ready()
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switch p {
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case model.ProtoFinish:
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finish = true
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goto failed
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case model.ProtoReady:
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// fetch message from svrbox(client send)
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for {
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if p, err = ch.CliProto.Get(); err != nil {
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err = nil // must be empty error
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break
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}
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if p.Operation == model.OpHeartbeatReply {
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if ch.Room != nil {
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online = ch.Room.OnlineNum()
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}
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if err = p.WriteWebsocketHeartV1(ws, online); err != nil {
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goto failed
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}
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} else {
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if err = p.WriteWebsocketV1(ws); err != nil {
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goto failed
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}
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}
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p.Body = nil // avoid memory leak
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ch.CliProto.GetAdv()
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}
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default:
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// server send
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if err = p.WriteWebsocketV1(ws); err != nil {
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goto failed
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}
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}
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// only hungry flush response
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if err = ws.Flush(); err != nil {
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break
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}
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}
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failed:
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if err != nil && err != io.EOF && err != websocket.ErrMessageClose {
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log.Error("key: %s dispatch tcp error(%v)", key, err)
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}
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ws.Close()
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wp.Put(wb)
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// must ensure all channel message discard, for reader won't blocking Signal
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for !finish {
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finish = (ch.Ready() == model.ProtoFinish)
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}
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}
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// auth for goim handshake with client, use rsa & aes.
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func (s *Server) authWebsocketV1(ws *websocket.Conn, p *model.Proto, ip string) (key, roomID string, userID int64, heartbeat time.Duration, rpt *Report, err error) {
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if err = p.ReadWebsocketV1(ws); err != nil {
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return
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}
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if p.Operation != model.OpAuth {
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err = ErrOperation
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return
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}
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if userID, roomID, key, rpt, err = s.NoAuth(int16(p.Ver), p.Body, ip); err != nil {
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return
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}
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heartbeat = _clientHeartbeat
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p.Body = nil
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p.Operation = model.OpAuthReply
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if err = p.WriteWebsocketV1(ws); err != nil {
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return
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}
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err = ws.Flush()
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return
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}
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