mirror of https://github.com/XTLS/Xray-core
116 lines
3.0 KiB
Go
116 lines
3.0 KiB
Go
package httpupgrade
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
|
|
"github.com/xtls/xray-core/common"
|
|
"github.com/xtls/xray-core/common/net"
|
|
"github.com/xtls/xray-core/common/session"
|
|
"github.com/xtls/xray-core/transport/internet"
|
|
"github.com/xtls/xray-core/transport/internet/stat"
|
|
"github.com/xtls/xray-core/transport/internet/tls"
|
|
)
|
|
|
|
type ConnRF struct {
|
|
net.Conn
|
|
Req *http.Request
|
|
First bool
|
|
}
|
|
|
|
func (c *ConnRF) Read(b []byte) (int, error) {
|
|
if c.First {
|
|
c.First = false
|
|
// TODO The bufio usage here is unreliable
|
|
resp, err := http.ReadResponse(bufio.NewReader(c.Conn), c.Req) // nolint:bodyclose
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
if resp.Status != "101 Switching Protocols" ||
|
|
strings.ToLower(resp.Header.Get("Upgrade")) != "websocket" ||
|
|
strings.ToLower(resp.Header.Get("Connection")) != "upgrade" {
|
|
return 0, newError("unrecognized reply")
|
|
}
|
|
}
|
|
return c.Conn.Read(b)
|
|
}
|
|
|
|
func dialhttpUpgrade(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (net.Conn, error) {
|
|
transportConfiguration := streamSettings.ProtocolSettings.(*Config)
|
|
|
|
pconn, err := internet.DialSystem(ctx, dest, streamSettings.SocketSettings)
|
|
if err != nil {
|
|
newError("failed to dial to ", dest).Base(err).AtError().WriteToLog()
|
|
return nil, err
|
|
}
|
|
|
|
var conn net.Conn
|
|
var requestURL url.URL
|
|
if config := tls.ConfigFromStreamSettings(streamSettings); config != nil {
|
|
tlsConfig := config.GetTLSConfig(tls.WithDestination(dest), tls.WithNextProto("http/1.1"))
|
|
if fingerprint := tls.GetFingerprint(config.Fingerprint); fingerprint != nil {
|
|
conn = tls.UClient(pconn, tlsConfig, fingerprint)
|
|
if err := conn.(*tls.UConn).WebsocketHandshakeContext(ctx); err != nil {
|
|
return nil, err
|
|
}
|
|
} else {
|
|
conn = tls.Client(pconn, tlsConfig)
|
|
}
|
|
requestURL.Scheme = "https"
|
|
} else {
|
|
conn = pconn
|
|
requestURL.Scheme = "http"
|
|
}
|
|
|
|
requestURL.Host = dest.NetAddr()
|
|
requestURL.Path = transportConfiguration.GetNormalizedPath()
|
|
req := &http.Request{
|
|
Method: http.MethodGet,
|
|
URL: &requestURL,
|
|
Host: transportConfiguration.Host,
|
|
Header: make(http.Header),
|
|
}
|
|
for key, value := range transportConfiguration.Header {
|
|
req.Header.Add(key, value)
|
|
}
|
|
req.Header.Set("Connection", "upgrade")
|
|
req.Header.Set("Upgrade", "websocket")
|
|
|
|
err = req.Write(conn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
connRF := &ConnRF{
|
|
Conn: conn,
|
|
Req: req,
|
|
First: true,
|
|
}
|
|
|
|
if transportConfiguration.Ed == 0 {
|
|
_, err = connRF.Read([]byte{})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return connRF, nil
|
|
}
|
|
|
|
func dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (stat.Connection, error) {
|
|
newError("creating connection to ", dest).WriteToLog(session.ExportIDToError(ctx))
|
|
|
|
conn, err := dialhttpUpgrade(ctx, dest, streamSettings)
|
|
if err != nil {
|
|
return nil, newError("failed to dial request to ", dest).Base(err)
|
|
}
|
|
return stat.Connection(conn), nil
|
|
}
|
|
|
|
func init() {
|
|
common.Must(internet.RegisterTransportDialer(protocolName, dial))
|
|
}
|