mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-09-20 10:37:51 +00:00
105 lines
2.8 KiB
Go
105 lines
2.8 KiB
Go
package v2raywebsocket
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import (
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"context"
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"net"
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"net/http"
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"net/url"
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"time"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/tls"
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"github.com/sagernet/sing-box/option"
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E "github.com/sagernet/sing/common/exceptions"
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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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sHTTP "github.com/sagernet/sing/protocol/http"
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"github.com/sagernet/websocket"
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)
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var _ adapter.V2RayClientTransport = (*Client)(nil)
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type Client struct {
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dialer *websocket.Dialer
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requestURL url.URL
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requestURLString string
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headers http.Header
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maxEarlyData uint32
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earlyDataHeaderName string
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}
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func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayWebsocketOptions, tlsConfig tls.Config) adapter.V2RayClientTransport {
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wsDialer := &websocket.Dialer{
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ReadBufferSize: 4 * 1024,
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WriteBufferSize: 4 * 1024,
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HandshakeTimeout: time.Second * 8,
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}
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if tlsConfig != nil {
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if len(tlsConfig.NextProtos()) == 0 {
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tlsConfig.SetNextProtos([]string{"http/1.1"})
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}
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wsDialer.NetDialTLSContext = func(ctx context.Context, network, addr string) (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 := tls.ClientHandshake(ctx, conn, tlsConfig)
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if err != nil {
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return nil, err
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}
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return &deadConn{tlsConn}, nil
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}
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} else {
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wsDialer.NetDialContext = func(ctx context.Context, network, addr string) (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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return &deadConn{conn}, nil
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}
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}
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var requestURL url.URL
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if tlsConfig == nil {
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requestURL.Scheme = "ws"
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} else {
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requestURL.Scheme = "wss"
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}
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requestURL.Host = serverAddr.String()
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requestURL.Path = options.Path
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err := sHTTP.URLSetPath(&requestURL, options.Path)
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if err != nil {
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return nil
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}
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headers := make(http.Header)
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for key, value := range options.Headers {
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headers[key] = value
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}
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return &Client{
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wsDialer,
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requestURL,
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requestURL.String(),
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headers,
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options.MaxEarlyData,
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options.EarlyDataHeaderName,
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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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if c.maxEarlyData <= 0 {
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conn, response, err := c.dialer.DialContext(ctx, c.requestURLString, c.headers)
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if err == nil {
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return &WebsocketConn{Conn: conn, Writer: NewWriter(conn, false)}, nil
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}
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return nil, wrapDialError(response, err)
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} else {
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return &EarlyWebsocketConn{Client: c, ctx: ctx, create: make(chan struct{})}, nil
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}
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}
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func wrapDialError(response *http.Response, err error) error {
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if response == nil {
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return err
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}
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return E.Extend(err, "HTTP ", response.StatusCode, " ", response.Status)
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}
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