57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
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// Modified from: https://github.com/Qv2ray/gun-lite
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// License: MIT
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package gun
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import (
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"crypto/tls"
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"fmt"
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"net"
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xtls "github.com/xtls/go"
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"golang.org/x/net/http2"
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)
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func NewHTTP2XTLSClient(dialFn DialFn, tlsConfig *tls.Config) *http2.Transport {
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dialFunc := func(network, addr string, cfg *tls.Config) (net.Conn, error) {
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pconn, err := dialFn(network, addr)
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if err != nil {
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return nil, err
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}
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xtlsConfig := &xtls.Config{
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InsecureSkipVerify: cfg.InsecureSkipVerify,
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ServerName: cfg.ServerName,
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}
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cn := xtls.Client(pconn, xtlsConfig)
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if err := cn.Handshake(); err != nil {
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pconn.Close()
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return nil, err
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}
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state := cn.ConnectionState()
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if p := state.NegotiatedProtocol; p != http2.NextProtoTLS {
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cn.Close()
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return nil, fmt.Errorf("http2: unexpected ALPN protocol %s, want %s", p, http2.NextProtoTLS)
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}
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return cn, nil
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}
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return &http2.Transport{
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DialTLS: dialFunc,
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TLSClientConfig: tlsConfig,
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AllowHTTP: false,
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DisableCompression: true,
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PingTimeout: 0,
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}
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}
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func StreamGunWithXTLSConn(conn net.Conn, tlsConfig *tls.Config, cfg *Config) (net.Conn, error) {
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dialFn := func(network, addr string) (net.Conn, error) {
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return conn, nil
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}
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transport := NewHTTP2XTLSClient(dialFn, tlsConfig)
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return StreamGunWithTransport(transport, cfg)
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}
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