mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-12-25 13:45:37 +08:00
115 lines
3.0 KiB
Go
115 lines
3.0 KiB
Go
package v2raygrpclite
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"time"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
"github.com/sagernet/sing-box/common/tls"
|
|
"github.com/sagernet/sing-box/option"
|
|
"github.com/sagernet/sing-box/transport/v2rayhttp"
|
|
E "github.com/sagernet/sing/common/exceptions"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
|
|
"golang.org/x/net/http2"
|
|
)
|
|
|
|
var _ adapter.V2RayClientTransport = (*Client)(nil)
|
|
|
|
var defaultClientHeader = http.Header{
|
|
"Content-Type": []string{"application/grpc"},
|
|
"User-Agent": []string{"grpc-go/1.48.0"},
|
|
"TE": []string{"trailers"},
|
|
}
|
|
|
|
type Client struct {
|
|
ctx context.Context
|
|
dialer N.Dialer
|
|
serverAddr M.Socksaddr
|
|
transport *http2.Transport
|
|
options option.V2RayGRPCOptions
|
|
url *url.URL
|
|
host string
|
|
}
|
|
|
|
func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayGRPCOptions, tlsConfig tls.Config) adapter.V2RayClientTransport {
|
|
var host string
|
|
if tlsConfig != nil && tlsConfig.ServerName() != "" {
|
|
host = M.ParseSocksaddrHostPort(tlsConfig.ServerName(), serverAddr.Port).String()
|
|
} else {
|
|
host = serverAddr.String()
|
|
}
|
|
client := &Client{
|
|
ctx: ctx,
|
|
dialer: dialer,
|
|
serverAddr: serverAddr,
|
|
options: options,
|
|
transport: &http2.Transport{
|
|
ReadIdleTimeout: time.Duration(options.IdleTimeout),
|
|
PingTimeout: time.Duration(options.PingTimeout),
|
|
DisableCompression: true,
|
|
},
|
|
url: &url.URL{
|
|
Scheme: "https",
|
|
Host: serverAddr.String(),
|
|
Path: "/" + options.ServiceName + "/Tun",
|
|
RawPath: "/" + url.PathEscape(options.ServiceName) + "/Tun",
|
|
},
|
|
host: host,
|
|
}
|
|
|
|
if tlsConfig == nil {
|
|
client.transport.DialTLSContext = func(ctx context.Context, network, addr string, cfg *tls.STDConfig) (net.Conn, error) {
|
|
return dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
|
|
}
|
|
} else {
|
|
if len(tlsConfig.NextProtos()) == 0 {
|
|
tlsConfig.SetNextProtos([]string{http2.NextProtoTLS})
|
|
}
|
|
client.transport.DialTLSContext = func(ctx context.Context, network, addr string, cfg *tls.STDConfig) (net.Conn, error) {
|
|
conn, err := dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return tls.ClientHandshake(ctx, conn, tlsConfig)
|
|
}
|
|
}
|
|
|
|
return client
|
|
}
|
|
|
|
func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
|
|
pipeInReader, pipeInWriter := io.Pipe()
|
|
request := &http.Request{
|
|
Method: http.MethodPost,
|
|
Body: pipeInReader,
|
|
URL: c.url,
|
|
Header: defaultClientHeader,
|
|
Host: c.host,
|
|
}
|
|
request = request.WithContext(ctx)
|
|
conn := newLateGunConn(pipeInWriter)
|
|
go func() {
|
|
response, err := c.transport.RoundTrip(request)
|
|
if err != nil {
|
|
conn.setup(nil, err)
|
|
} else if response.StatusCode != 200 {
|
|
response.Body.Close()
|
|
conn.setup(nil, E.New("v2ray-grpc: unexpected status: ", response.Status))
|
|
} else {
|
|
conn.setup(response.Body, nil)
|
|
}
|
|
}()
|
|
return conn, nil
|
|
}
|
|
|
|
func (c *Client) Close() error {
|
|
v2rayhttp.ResetTransport(c.transport)
|
|
return nil
|
|
}
|