mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-29 20:11:28 +00:00
95 lines
2.5 KiB
Go
95 lines
2.5 KiB
Go
package v2raywebsocket
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
"github.com/sagernet/sing-box/common/tls"
|
|
"github.com/sagernet/sing-box/option"
|
|
"github.com/sagernet/sing/common/bufio/deadline"
|
|
E "github.com/sagernet/sing/common/exceptions"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
"github.com/sagernet/websocket"
|
|
)
|
|
|
|
var _ adapter.V2RayClientTransport = (*Client)(nil)
|
|
|
|
type Client struct {
|
|
dialer *websocket.Dialer
|
|
uri string
|
|
headers http.Header
|
|
maxEarlyData uint32
|
|
earlyDataHeaderName string
|
|
}
|
|
|
|
func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayWebsocketOptions, tlsConfig tls.Config) adapter.V2RayClientTransport {
|
|
wsDialer := &websocket.Dialer{
|
|
ReadBufferSize: 4 * 1024,
|
|
WriteBufferSize: 4 * 1024,
|
|
HandshakeTimeout: time.Second * 8,
|
|
}
|
|
if tlsConfig != nil {
|
|
if len(tlsConfig.NextProtos()) == 0 {
|
|
tlsConfig.SetNextProtos([]string{"http/1.1"})
|
|
}
|
|
wsDialer.NetDialTLSContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
conn, err := dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return tls.ClientHandshake(ctx, conn, tlsConfig)
|
|
}
|
|
} else {
|
|
wsDialer.NetDialContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
return dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
|
|
}
|
|
}
|
|
var uri url.URL
|
|
if tlsConfig == nil {
|
|
uri.Scheme = "ws"
|
|
} else {
|
|
uri.Scheme = "wss"
|
|
}
|
|
uri.Host = serverAddr.String()
|
|
uri.Path = options.Path
|
|
if !strings.HasPrefix(uri.Path, "/") {
|
|
uri.Path = "/" + uri.Path
|
|
}
|
|
headers := make(http.Header)
|
|
for key, value := range options.Headers {
|
|
headers[key] = value
|
|
}
|
|
return &Client{
|
|
wsDialer,
|
|
uri.String(),
|
|
headers,
|
|
options.MaxEarlyData,
|
|
options.EarlyDataHeaderName,
|
|
}
|
|
}
|
|
|
|
func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
|
|
if c.maxEarlyData <= 0 {
|
|
conn, response, err := c.dialer.DialContext(ctx, c.uri, c.headers)
|
|
if err == nil {
|
|
return deadline.NewConn(&WebsocketConn{Conn: conn, Writer: NewWriter(conn, false)}), nil
|
|
}
|
|
return nil, wrapDialError(response, err)
|
|
} else {
|
|
return deadline.NewConn(&EarlyWebsocketConn{Client: c, ctx: ctx, create: make(chan struct{})}), nil
|
|
}
|
|
}
|
|
|
|
func wrapDialError(response *http.Response, err error) error {
|
|
if response == nil {
|
|
return err
|
|
}
|
|
return E.Extend(err, "HTTP ", response.StatusCode, " ", response.Status)
|
|
}
|