add socks5 udp relay

pkg/connector/http/connector.go

@@ -10,6 +10,7 @@ import (
 	"net/http/httputil"
 	"net/url"
 	"strings"
+	"time"
 
 	"github.com/go-gost/gost/pkg/connector"
 	"github.com/go-gost/gost/pkg/logger"
@@ -74,6 +75,11 @@ func (c *httpConnector) Connect(ctx context.Context, conn net.Conn, network, add
 		c.logger.Debug(string(dump))
 	}
 
+	if c.md.connectTimeout > 0 {
+		conn.SetDeadline(time.Now().Add(c.md.connectTimeout))
+		defer conn.SetDeadline(time.Time{})
+	}
+
 	req = req.WithContext(ctx)
 	if err := req.Write(conn); err != nil {
 		return nil, err
@@ -98,6 +104,7 @@ func (c *httpConnector) Connect(ctx context.Context, conn net.Conn, network, add
 }
 
 func (c *httpConnector) parseMetadata(md md.Metadata) (err error) {
+	c.md.connectTimeout = md.GetDuration(connectTimeout)
 	c.md.UserAgent, _ = md.Get(userAgent).(string)
 	if c.md.UserAgent == "" {
 		c.md.UserAgent = defaultUserAgent

pkg/connector/http/metadata.go

@@ -1,10 +1,14 @@
 package http
 
-import "net/url"
+import (
+	"net/url"
+	"time"
+)
 
 const (
-	userAgent = "userAgent"
-	auth      = "auth"
+	connectTimeout = "timeout"
+	userAgent      = "userAgent"
+	auth           = "auth"
 )
 
 const (
@@ -12,6 +16,7 @@ const (
 )
 
 type metadata struct {
-	UserAgent string
-	User      *url.Userinfo
+	connectTimeout time.Duration
+	UserAgent      string
+	User           *url.Userinfo
 }