allow outbound to be proxied

tools/conf/transport_internet.go

@@ -230,3 +230,16 @@ func (this *StreamConfig) Build() (*internet.StreamConfig, error) {
 	}
 	return config, nil
 }
+
+type ProxyConfig struct {
+	Tag string `json:"tag"`
+}
+
+func (this *ProxyConfig) Build() (*internet.ProxyConfig, error) {
+	if len(this.Tag) == 0 {
+		return nil, errors.New("Proxy tag is not set.")
+	}
+	return &internet.ProxyConfig{
+		Tag: this.Tag,
+	}, nil
+}

tools/conf/v2ray.go

@@ -74,6 +74,7 @@ type OutboundConnectionConfig struct {
 	Protocol      string          `json:"protocol"`
 	SendThrough   *Address        `json:"sendThrough"`
 	StreamSetting *StreamConfig   `json:"streamSettings"`
+	ProxySettings *ProxyConfig    `json:"proxySettings"`
 	Settings      json.RawMessage `json:"settings"`
 }
 
@@ -103,6 +104,13 @@ func (this *OutboundConnectionConfig) Build() (*core.OutboundConnectionConfig, e
 		}
 		config.StreamSettings = ss
 	}
+	if this.ProxySettings != nil {
+		ps, err := this.ProxySettings.Build()
+		if err != nil {
+			return nil, errors.New("Outbound: invalid proxy settings: " + err.Error())
+		}
+		config.ProxySettings = ps
+	}
 	return config, nil
 }
 
@@ -198,6 +206,7 @@ type OutboundDetourConfig struct {
 	Tag           string          `json:"tag"`
 	Settings      json.RawMessage `json:"settings"`
 	StreamSetting *StreamConfig   `json:"streamSettings"`
+	ProxySettings *ProxyConfig    `json:"proxySettings"`
 }
 
 func (this *OutboundDetourConfig) Build() (*core.OutboundConnectionConfig, error) {
@@ -228,6 +237,14 @@ func (this *OutboundDetourConfig) Build() (*core.OutboundConnectionConfig, error
 	if err != nil {
 		return nil, err
 	}
+
+	if this.ProxySettings != nil {
+		ps, err := this.ProxySettings.Build()
+		if err != nil {
+			return nil, errors.New("OutboundDetour: invalid proxy settings: " + err.Error())
+		}
+		config.ProxySettings = ps
+	}
 	config.Settings = ts
 	return config, nil
 }