mirror of https://gitee.com/IrisVega/frp.git
69 lines
1.2 KiB
Go
69 lines
1.2 KiB
Go
package net
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import (
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"errors"
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"net"
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"net/http"
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"time"
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"golang.org/x/net/websocket"
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)
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var ErrWebsocketListenerClosed = errors.New("websocket listener closed")
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const (
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FrpWebsocketPath = "/~!frp"
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)
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type WebsocketListener struct {
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ln net.Listener
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acceptCh chan net.Conn
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server *http.Server
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}
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// NewWebsocketListener to handle websocket connections
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// ln: tcp listener for websocket connections
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func NewWebsocketListener(ln net.Listener) (wl *WebsocketListener) {
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wl = &WebsocketListener{
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acceptCh: make(chan net.Conn),
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}
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muxer := http.NewServeMux()
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muxer.Handle(FrpWebsocketPath, websocket.Handler(func(c *websocket.Conn) {
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notifyCh := make(chan struct{})
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conn := WrapCloseNotifyConn(c, func() {
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close(notifyCh)
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})
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wl.acceptCh <- conn
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<-notifyCh
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}))
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wl.server = &http.Server{
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Addr: ln.Addr().String(),
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Handler: muxer,
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ReadHeaderTimeout: 60 * time.Second,
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}
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go func() {
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_ = wl.server.Serve(ln)
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}()
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return
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}
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func (p *WebsocketListener) Accept() (net.Conn, error) {
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c, ok := <-p.acceptCh
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if !ok {
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return nil, ErrWebsocketListenerClosed
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}
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return c, nil
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}
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func (p *WebsocketListener) Close() error {
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return p.server.Close()
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}
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func (p *WebsocketListener) Addr() net.Addr {
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return p.ln.Addr()
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}
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