connect Target修复

http.go

@@ -52,6 +52,7 @@ func (c *httpConnector) ConnectContext(ctx context.Context, conn net.Conn, netwo
 		ua = DefaultUserAgent
 	}
 
+	origAddress := address
 	if opts.Host != "" {
 		address = opts.Host
 	}
@@ -70,6 +71,10 @@ func (c *httpConnector) ConnectContext(ctx context.Context, conn net.Conn, netwo
 	req.Header.Set("User-Agent", ua)
 	req.Header.Set("Proxy-Connection", "keep-alive")
 
+	if origAddress != address {
+		req.Header.Set("Target", origAddress)
+	}
+
 	user := opts.User
 	if user == nil {
 		user = c.User
@@ -163,6 +168,10 @@ func (h *httpHandler) handleRequest(conn net.Conn, req *http.Request) {
 	}
 
 	host := req.Host
+	actualTarget := req.Header.Get("Target")
+	if actualTarget != "" {
+		host = actualTarget
+	}
 	if _, port, _ := net.SplitHostPort(host); port == "" {
 		host = net.JoinHostPort(host, "80")
 	}
@@ -180,6 +189,7 @@ func (h *httpHandler) handleRequest(conn net.Conn, req *http.Request) {
 	}
 
 	req.Header.Del("Gost-Target")
+	req.Header.Del("Target")
 
 	resp := &http.Response{
 		ProtoMajor: 1,