diff --git a/servlet/data/gateway_rpc_handlers.go b/servlet/data/gateway_rpc_handlers.go
index 2ba374c..c9e7b37 100644
--- a/servlet/data/gateway_rpc_handlers.go
+++ b/servlet/data/gateway_rpc_handlers.go
@@ -7,6 +7,7 @@ import (
 	cwf "git.loafle.net/commons_go/websocket_fasthttp"
 	oocmp "git.loafle.net/overflow/overflow_commons_go/modules/probe"
 	probeM "git.loafle.net/overflow/overflow_commons_go/modules/probe/model"
+	oogw "git.loafle.net/overflow/overflow_gateway_websocket"
 	oogweg "git.loafle.net/overflow/overflow_gateway_websocket/external/grpc"
 	"git.loafle.net/overflow/overflow_gateway_websocket/rpc"
 	"github.com/valyala/fasthttp"
@@ -56,6 +57,9 @@ func (sh *GatewayRPCHandlers) Handshake(socketCTX cwf.SocketContext, ctx *fastht
 		return "", nil
 	}
 
+	socketCTX.SetAttribute(oogw.ClientTypeKey, oogw.PROBE)
+	socketCTX.SetAttribute(oogw.TargetIDKey, probeKey)
+
 	return probeKey, nil
 }