update TCPKeepAliveInterval type to allow expression disable

infra/conf/transport_internet.go

@@ -390,7 +390,7 @@ type SocketConfig struct {
 	TProxy              string `json:"tproxy"`
 	AcceptProxyProtocol bool   `json:"acceptProxyProtocol"`
 
-	TCPKeepAliveInterval uint32 `json:"tcpKeepAliveInterval"`
+	TCPKeepAliveInterval int32 `json:"tcpKeepAliveInterval"`
 }
 
 // Build implements Buildable.

transport/internet/config.pb.go

@@ -420,7 +420,7 @@ type SocketConfig struct {
 	BindAddress                []byte `protobuf:"bytes,5,opt,name=bind_address,json=bindAddress,proto3" json:"bind_address,omitempty"`
 	BindPort                   uint32 `protobuf:"varint,6,opt,name=bind_port,json=bindPort,proto3" json:"bind_port,omitempty"`
 	AcceptProxyProtocol        bool   `protobuf:"varint,7,opt,name=accept_proxy_protocol,json=acceptProxyProtocol,proto3" json:"accept_proxy_protocol,omitempty"`
-	TcpKeepAliveInterval       uint32 `protobuf:"varint,8,opt,name=tcp_keep_alive_interval,json=tcpKeepAliveInterval,proto3" json:"tcp_keep_alive_interval,omitempty"`
+	TcpKeepAliveInterval       int32  `protobuf:"varint,8,opt,name=tcp_keep_alive_interval,json=tcpKeepAliveInterval,proto3" json:"tcp_keep_alive_interval,omitempty"`
 }
 
 func (x *SocketConfig) Reset() {
@@ -504,7 +504,7 @@ func (x *SocketConfig) GetAcceptProxyProtocol() bool {
 	return false
 }
 
-func (x *SocketConfig) GetTcpKeepAliveInterval() uint32 {
+func (x *SocketConfig) GetTcpKeepAliveInterval() int32 {
 	if x != nil {
 		return x.TcpKeepAliveInterval
 	}
@@ -591,7 +591,7 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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transport/internet/config.proto

@@ -92,5 +92,5 @@ message SocketConfig {
 
   bool accept_proxy_protocol = 7;
 
-  uint32 tcp_keep_alive_interval = 8;
+  int32 tcp_keep_alive_interval = 8;
 }