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websocket: update muxer for websocket

This commit is contained in:
fatedier 2018-08-10 11:43:08 +08:00
parent 64136a3b3e
commit 7793f55545
4 changed files with 143 additions and 155 deletions
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7
models/config/client_common.go
View File

@ -186,9 +186,10 @@ func UnmarshalClientConfFromIni(defaultCfg *ClientCommonConf, content string) (c
}
if tmpStr, ok = conf.Get("common", "protocol"); ok {
// Now it only support tcp and kcp.
if tmpStr != "kcp" && tmpStr != "websocket" {
tmpStr = "tcp"
// Now it only support tcp and kcp and websocket.
if tmpStr != "tcp" && tmpStr != "kcp" && tmpStr != "websocket" {
err = fmt.Errorf("Parse conf error: invalid protocol")
return
}
cfg.Protocol = tmpStr
}

51
server/service.go
View File

@ -15,11 +15,11 @@
package server
import (
"bytes"
"fmt"
"io/ioutil"
"net"
"net/http"
"strings"
"time"
"github.com/fatedier/frp/assets"
@ -139,6 +139,13 @@ func NewService() (svr *Service, err error) {
log.Info("frps kcp listen on udp %s:%d", cfg.BindAddr, cfg.KcpBindPort)
}
// Listen for accepting connections from client using websocket protocol.
websocketPrefix := []byte("GET /%23frp")
websocketLn := svr.muxer.Listen(0, uint32(len(websocketPrefix)), func(data []byte) bool {
return bytes.Equal(data, websocketPrefix)
})
svr.websocketListener = frpNet.NewWebsocketListener(websocketLn)
// Create http vhost muxer.
if cfg.VhostHttpPort > 0 {
rp := vhost.NewHttpReverseProxy()
@ -150,7 +157,9 @@ func NewService() (svr *Service, err error) {
Handler: rp,
}
var l net.Listener
if !httpMuxOn {
if httpMuxOn {
l = svr.muxer.ListenHttp(1)
} else {
l, err = net.Listen("tcp", address)
if err != nil {
err = fmt.Errorf("Create vhost http listener error, %v", err)
@ -165,7 +174,7 @@ func NewService() (svr *Service, err error) {
if cfg.VhostHttpsPort > 0 {
var l net.Listener
if httpsMuxOn {
l = svr.muxer.ListenHttps(0)
l = svr.muxer.ListenHttps(1)
} else {
l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", cfg.ProxyBindAddr, cfg.VhostHttpsPort))
if err != nil {
@ -205,37 +214,6 @@ func NewService() (svr *Service, err error) {
log.Info("Dashboard listen on %s:%d", cfg.DashboardAddr, cfg.DashboardPort)
}
if !httpMuxOn {
svr.websocketListener, err = frpNet.NewWebsocketListener(svr.muxer.ListenHttp(0), nil)
return
}
// server := &http.Server{}
if httpMuxOn {
rp := svr.httpReverseProxy
svr.websocketListener, err = frpNet.NewWebsocketListener(svr.muxer.ListenHttp(0),
func(w http.ResponseWriter, req *http.Request) bool {
domain := getHostFromAddr(req.Host)
location := req.URL.Path
headers := rp.GetHeaders(domain, location)
if headers == nil {
return true
}
rp.ServeHTTP(w, req)
return false
})
}
return
}
func getHostFromAddr(addr string) (host string) {
strs := strings.Split(addr, ":")
if len(strs) > 1 {
host = strs[0]
} else {
host = addr
}
return
}
@ -246,9 +224,9 @@ func (svr *Service) Run() {
if g.GlbServerCfg.KcpBindPort > 0 {
go svr.HandleListener(svr.kcpListener)
}
if svr.websocketListener != nil {
go svr.HandleListener(svr.websocketListener)
}
svr.HandleListener(svr.listener)
}
@ -260,6 +238,7 @@ func (svr *Service) HandleListener(l frpNet.Listener) {
log.Warn("Listener for incoming connections from client closed")
return
}
// Start a new goroutine for dealing connections.
go func(frpConn frpNet.Conn) {
dealFn := func(conn frpNet.Conn) {

108
utils/net/conn.go
View File

@ -96,6 +96,75 @@ func (conn *WrapReadWriteCloserConn) SetWriteDeadline(t time.Time) error {
return &net.OpError{Op: "set", Net: "wrap", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
}
type CloseNotifyConn struct {
net.Conn
log.Logger
// 1 means closed
closeFlag int32
closeFn func()
}
// closeFn will be only called once
func WrapCloseNotifyConn(c net.Conn, closeFn func()) Conn {
return &CloseNotifyConn{
Conn: c,
Logger: log.NewPrefixLogger(""),
closeFn: closeFn,
}
}
func (cc *CloseNotifyConn) Close() (err error) {
pflag := atomic.SwapInt32(&cc.closeFlag, 1)
if pflag == 0 {
err = cc.Close()
if cc.closeFn != nil {
cc.closeFn()
}
}
return
}
type StatsConn struct {
Conn
closed int64 // 1 means closed
totalRead int64
totalWrite int64
statsFunc func(totalRead, totalWrite int64)
}
func WrapStatsConn(conn Conn, statsFunc func(total, totalWrite int64)) *StatsConn {
return &StatsConn{
Conn: conn,
statsFunc: statsFunc,
}
}
func (statsConn *StatsConn) Read(p []byte) (n int, err error) {
n, err = statsConn.Conn.Read(p)
statsConn.totalRead += int64(n)
return
}
func (statsConn *StatsConn) Write(p []byte) (n int, err error) {
n, err = statsConn.Conn.Write(p)
statsConn.totalWrite += int64(n)
return
}
func (statsConn *StatsConn) Close() (err error) {
old := atomic.SwapInt64(&statsConn.closed, 1)
if old != 1 {
err = statsConn.Conn.Close()
if statsConn.statsFunc != nil {
statsConn.statsFunc(statsConn.totalRead, statsConn.totalWrite)
}
}
return
}
func ConnectServer(protocol string, addr string) (c Conn, err error) {
switch protocol {
case "tcp":
@ -138,42 +207,3 @@ func ConnectServerByProxy(proxyUrl string, protocol string, addr string) (c Conn
return nil, fmt.Errorf("unsupport protocol: %s", protocol)
}
}
type StatsConn struct {
Conn
closed int64 // 1 means closed
totalRead int64
totalWrite int64
statsFunc func(totalRead, totalWrite int64)
}
func WrapStatsConn(conn Conn, statsFunc func(total, totalWrite int64)) *StatsConn {
return &StatsConn{
Conn: conn,
statsFunc: statsFunc,
}
}
func (statsConn *StatsConn) Read(p []byte) (n int, err error) {
n, err = statsConn.Conn.Read(p)
statsConn.totalRead += int64(n)
return
}
func (statsConn *StatsConn) Write(p []byte) (n int, err error) {
n, err = statsConn.Conn.Write(p)
statsConn.totalWrite += int64(n)
return
}
func (statsConn *StatsConn) Close() (err error) {
old := atomic.SwapInt64(&statsConn.closed, 1)
if old != 1 {
err = statsConn.Conn.Close()
if statsConn.statsFunc != nil {
statsConn.statsFunc(statsConn.totalRead, statsConn.totalWrite)
}
}
return
}

128
utils/net/websocket.go
View File

@ -1,127 +1,105 @@
package net
import (
"errors"
"fmt"
"net"
"net/http"
"net/url"
"sync/atomic"
"time"
"github.com/fatedier/frp/utils/log"
"golang.org/x/net/websocket"
)
var (
ErrWebsocketListenerClosed = errors.New("websocket listener closed")
)
const (
FrpWebsocketPath = "/#frp"
)
type WebsocketListener struct {
net.Addr
ln net.Listener
accept chan Conn
log.Logger
server *http.Server
httpMutex *http.ServeMux
connChan chan *WebsocketConn
closeFlag bool
}
func NewWebsocketListener(ln net.Listener,
filter func(w http.ResponseWriter, r *http.Request) bool) (l *WebsocketListener, err error) {
l = &WebsocketListener{
httpMutex: http.NewServeMux(),
connChan: make(chan *WebsocketConn),
// ln: tcp listener for websocket connections
func NewWebsocketListener(ln net.Listener) (wl *WebsocketListener) {
wl = &WebsocketListener{
Addr: ln.Addr(),
accept: make(chan Conn),
Logger: log.NewPrefixLogger(""),
}
l.httpMutex.Handle("/", websocket.Handler(func(c *websocket.Conn) {
conn := NewWebScoketConn(c)
l.connChan <- conn
conn.waitClose()
muxer := http.NewServeMux()
muxer.Handle(FrpWebsocketPath, websocket.Handler(func(c *websocket.Conn) {
notifyCh := make(chan struct{})
conn := WrapCloseNotifyConn(c, func() {
close(notifyCh)
})
wl.accept <- conn
<-notifyCh
}))
l.server = &http.Server{
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if filter != nil && !filter(w, r) {
return
wl.server = &http.Server{
Addr: ln.Addr().String(),
Handler: muxer,
}
l.httpMutex.ServeHTTP(w, r)
}),
}
ch := make(chan struct{})
go func() {
close(ch)
err = l.server.Serve(ln)
}()
<-ch
<-time.After(time.Millisecond)
go wl.server.Serve(ln)
return
}
func ListenWebsocket(bindAddr string, bindPort int) (l *WebsocketListener, err error) {
ln, err := net.Listen("tcp", fmt.Sprintf("%s:%d", bindAddr, bindPort))
func ListenWebsocket(bindAddr string, bindPort int) (*WebsocketListener, error) {
tcpLn, err := net.Listen("tcp", fmt.Sprintf("%s:%d", bindAddr, bindPort))
if err != nil {
return
return nil, err
}
l, err = NewWebsocketListener(ln, nil)
return
l := NewWebsocketListener(tcpLn)
return l, nil
}
func (p *WebsocketListener) Accept() (Conn, error) {
c := <-p.connChan
c, ok := <-p.accept
if !ok {
return nil, ErrWebsocketListenerClosed
}
return c, nil
}
func (p *WebsocketListener) Close() error {
if !p.closeFlag {
p.closeFlag = true
p.server.Close()
}
return nil
return p.server.Close()
}
type WebsocketConn struct {
net.Conn
log.Logger
closed int32
wait chan struct{}
}
func NewWebScoketConn(conn net.Conn) (c *WebsocketConn) {
c = &WebsocketConn{
Conn: conn,
Logger: log.NewPrefixLogger(""),
wait: make(chan struct{}),
}
return
}
func (p *WebsocketConn) Close() error {
if atomic.SwapInt32(&p.closed, 1) == 1 {
return nil
}
close(p.wait)
return p.Conn.Close()
}
func (p *WebsocketConn) waitClose() {
<-p.wait
}
// ConnectWebsocketServer :
// addr: ws://domain:port
func ConnectWebsocketServer(addr string) (c Conn, err error) {
addr = "ws://" + addr
// addr: domain:port
func ConnectWebsocketServer(addr string) (Conn, error) {
addr = "ws://" + addr + FrpWebsocketPath
uri, err := url.Parse(addr)
if err != nil {
return
return nil, err
}
origin := "http://" + uri.Host
cfg, err := websocket.NewConfig(addr, origin)
if err != nil {
return
return nil, err
}
cfg.Dialer = &net.Dialer{
Timeout: time.Second * 10,
Timeout: 10 * time.Second,
}
conn, err := websocket.DialConfig(cfg)
if err != nil {
return
return nil, err
}
c = NewWebScoketConn(conn)
return
c := WrapConn(conn)
return c, nil
}