Add NewClient()

common/protocol/http/client.go

@@ -0,0 +1,34 @@
+package http
+
+import (
+	"context"
+	gohttp "net/http"
+
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/transport/internet"
+)
+
+// NewClient creates an HTTP client with with internal dialer and using the given sockopt.
+// sockopt can only have one or empty.
+func NewClient(sockopt ...*internet.SocketConfig) *gohttp.Client {
+	var Sockopt *internet.SocketConfig
+	switch len(sockopt) {
+	case 0:
+	case 1:
+		Sockopt = sockopt[0]
+	default:
+		panic("sockopt can only be nil or have one")
+	}
+	httpClient := &gohttp.Client{
+		Transport: &gohttp.Transport{
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				dest, err := net.ParseDestination(network + ":" + addr)
+				if err != nil {
+					return nil, err
+				}
+				return internet.DialSystem(ctx, dest, Sockopt)
+			},
+		},
+	}
+	return httpClient
+}