mirror of
https://github.com/SagerNet/sing-box.git
synced 2025-06-10 20:34:14 +08:00
105 lines
2.6 KiB
Go
105 lines
2.6 KiB
Go
package v2raygrpclite
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import (
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"context"
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"crypto/tls"
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"fmt"
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"io"
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"net"
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"net/http"
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"net/url"
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"github.com/sagernet/sing-box/adapter"
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D "github.com/sagernet/sing-box/common/dialer"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/bufio"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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"golang.org/x/net/http2"
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)
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var _ adapter.V2RayClientTransport = (*Client)(nil)
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var defaultClientHeader = http.Header{
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"Content-Type": []string{"application/grpc"},
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"User-Agent": []string{"grpc-go/1.48.0"},
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"TE": []string{"trailers"},
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}
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type Client struct {
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ctx context.Context
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dialer N.Dialer
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serverAddr M.Socksaddr
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client *http.Client
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options option.V2RayGRPCOptions
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url *url.URL
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}
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func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayGRPCOptions, tlsConfig *tls.Config) adapter.V2RayClientTransport {
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return &Client{
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ctx: ctx,
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dialer: dialer,
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serverAddr: serverAddr,
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options: options,
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client: &http.Client{
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Transport: &http2.Transport{
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DialTLSContext: func(ctx context.Context, network, addr string, cfg *tls.Config) (net.Conn, error) {
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conn, err := dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
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if err != nil {
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return nil, err
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}
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tlsConn, err := D.TLSClient(ctx, conn, cfg)
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if err != nil {
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return nil, err
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}
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return tlsConn, nil
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},
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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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url: &url.URL{
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Scheme: "https",
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Host: serverAddr.String(),
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Path: fmt.Sprintf("/%s/Tun", url.QueryEscape(options.ServiceName)),
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},
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}
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}
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func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
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requestPipeReader, requestPipeWriter := io.Pipe()
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request := (&http.Request{
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Method: http.MethodPost,
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Body: requestPipeReader,
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URL: c.url,
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Proto: "HTTP/2",
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ProtoMajor: 2,
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ProtoMinor: 0,
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Header: defaultClientHeader,
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}).WithContext(ctx)
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responsePipeReader, responsePipeWriter := io.Pipe()
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go func() {
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defer responsePipeWriter.Close()
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response, err := c.client.Do(request)
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if err != nil {
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return
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}
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bufio.Copy(responsePipeWriter, response.Body)
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}()
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return newGunConn(responsePipeReader, requestPipeWriter, ChainedClosable{requestPipeReader, requestPipeWriter, responsePipeReader}), nil
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}
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type ChainedClosable []io.Closer
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// Close implements io.Closer.Close().
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func (cc ChainedClosable) Close() error {
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for _, c := range cc {
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_ = common.Close(c)
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}
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return nil
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}
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