refine shadowsocks server

proxy/shadowsocks/client.go

@@ -0,0 +1,48 @@
+package shadowsocks
+
+import (
+	"v2ray.com/core/common/alloc"
+	"v2ray.com/core/common/log"
+	v2net "v2ray.com/core/common/net"
+	"v2ray.com/core/common/protocol"
+	"v2ray.com/core/common/retry"
+	"v2ray.com/core/proxy"
+	"v2ray.com/core/transport/internet"
+	"v2ray.com/core/transport/ray"
+)
+
+type Client struct {
+	serverPicker protocol.ServerPicker
+	meta         *proxy.OutboundHandlerMeta
+}
+
+func (this *Client) Dispatch(destination v2net.Destination, payload *alloc.Buffer, ray ray.OutboundRay) error {
+	defer payload.Release()
+	defer ray.OutboundInput().Release()
+	defer ray.OutboundOutput().Close()
+
+	network := destination.Network
+
+	var server *protocol.ServerSpec
+	var conn internet.Connection
+
+	err := retry.Timed(5, 100).On(func() error {
+		server = this.serverPicker.PickServer()
+		dest := server.Destination()
+		dest.Network = network
+		rawConn, err := internet.Dial(this.meta.Address, dest, this.meta.StreamSettings)
+		if err != nil {
+			return err
+		}
+		conn = rawConn
+
+		return nil
+	})
+	if err != nil {
+		log.Error("Shadowsocks|Client: Failed to find an available destination:", err)
+		return err
+	}
+	log.Info("Shadowsocks|Client: Tunneling request to ", destination, " via ", server.Destination())
+
+	return nil
+}