support server name override

tools/conf/transport_internet.go

@@ -146,8 +146,9 @@ type TLSCertConfig struct {
 	KeyFile  string `json:"keyFile"`
 }
 type TLSConfig struct {
-	Insecure bool             `json:"allowInsecure"`
-	Certs    []*TLSCertConfig `json:"certificates"`
+	Insecure   bool             `json:"allowInsecure"`
+	Certs      []*TLSCertConfig `json:"certificates"`
+	ServerName string           `json:"serverName"`
 }
 
 func (v *TLSConfig) Build() (*loader.TypedSettings, error) {
@@ -168,6 +169,9 @@ func (v *TLSConfig) Build() (*loader.TypedSettings, error) {
 		}
 	}
 	config.AllowInsecure = v.Insecure
+	if len(v.ServerName) > 0 {
+		config.ServerName = v.ServerName
+	}
 	return loader.NewTypedSettings(config), nil
 }
 

transport/internet/tls/config.go

@@ -34,6 +34,9 @@ func (v *Config) GetTLSConfig() *tls.Config {
 	config.InsecureSkipVerify = v.AllowInsecure
 	config.Certificates = v.BuildCertificates()
 	config.BuildNameToCertificate()
+	if len(v.ServerName) > 0 {
+		config.ServerName = v.ServerName
+	}
 
 	return config
 }

transport/internet/tls/config.pb.go

@@ -46,6 +46,8 @@ type Config struct {
 	AllowInsecure bool `protobuf:"varint,1,opt,name=allow_insecure,json=allowInsecure" json:"allow_insecure,omitempty"`
 	// List of certificates to be served on server.
 	Certificate []*Certificate `protobuf:"bytes,2,rep,name=certificate" json:"certificate,omitempty"`
+	// Override server name.
+	ServerName string `protobuf:"bytes,3,opt,name=server_name,json=serverName" json:"server_name,omitempty"`
 }
 
 func (m *Config) Reset()                    { *m = Config{} }
@@ -68,19 +70,20 @@ func init() {
 func init() { proto.RegisterFile("v2ray.com/core/transport/internet/tls/config.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
-	// 218 bytes of a gzipped FileDescriptorProto
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-	0xff, 0xff, 0x5d, 0x97, 0x5b, 0x86, 0x61, 0x01, 0x00, 0x00,
+	// 240 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x84, 0x50, 0xc1, 0x4a, 0x03, 0x31,
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 }

transport/internet/tls/config.proto

@@ -19,4 +19,7 @@ message Config {
 
   // List of certificates to be served on server.
   repeated Certificate certificate = 2;
+
+  // Override server name.
+  string server_name = 3;
 }