diff --git a/common/net/network.go b/common/net/network.go
index 3fa9509e9..1244fe983 100644
--- a/common/net/network.go
+++ b/common/net/network.go
@@ -15,6 +15,9 @@ const (
 
 	// KCPNetwork represents the KCP network.
 	KCPNetwork = Network("kcp")
+
+	// WSNetwork represents the Websocket over HTTP network.
+	WSNetwork = Network("ws")
 )
 
 // Network represents a communication network on internet.