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68 lines
1.3 KiB
Go
68 lines
1.3 KiB
Go
package proxy
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import (
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"crypto/tls"
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"net"
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"net/http"
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"net/http/httputil"
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"strings"
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log "github.com/sirupsen/logrus"
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)
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// 当前仅做了转发 websocket 流量
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type webSocket struct{}
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var defaultWebSocket webSocket
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func (s *webSocket) ws(conn net.Conn, host string) {
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log := log.WithField("in", "webSocket.ws").WithField("host", host)
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defer conn.Close()
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remoteConn, err := net.Dial("tcp", host)
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if err != nil {
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logErr(log, err)
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return
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}
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defer remoteConn.Close()
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transfer(log, conn, remoteConn)
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}
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func (s *webSocket) wss(res http.ResponseWriter, req *http.Request) {
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log := log.WithField("in", "webSocket.wss").WithField("host", req.Host)
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upgradeBuf, err := httputil.DumpRequest(req, false)
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if err != nil {
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log.Errorf("DumpRequest: %v\n", err)
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res.WriteHeader(502)
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return
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}
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cconn, _, err := res.(http.Hijacker).Hijack()
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if err != nil {
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log.Errorf("Hijack: %v\n", err)
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res.WriteHeader(502)
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return
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}
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defer cconn.Close()
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host := req.Host
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if !strings.Contains(host, ":") {
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host = host + ":443"
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}
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conn, err := tls.Dial("tcp", host, nil)
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if err != nil {
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log.Errorf("tls.Dial: %v\n", err)
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return
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}
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defer conn.Close()
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_, err = conn.Write(upgradeBuf)
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if err != nil {
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log.Errorf("wss upgrade: %v\n", err)
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return
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}
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transfer(log, conn, cconn)
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}
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