diff --git a/server/imserver/app.go b/server/imserver/app.go
index 9fffb267..06a198cb 100644
--- a/server/imserver/app.go
+++ b/server/imserver/app.go
@@ -40,7 +40,7 @@ func (this *App) Update() {
 		next := this.netMsgQueue.WorkList.Next()
 		hdr, ok := next.GetData().(*f5.MsgHdr)
 		if ok {
-			if hdr.MsgId < 100 {
+			if hdr.MsgId < f5.WSP_SS_MAX_MSGID {
 				handler := ss.GetNetMsgHandler(hdr.MsgId)
 				if handler != nil {
 					switch handler.HandlerId {
diff --git a/server/imserver/wsplistener.go b/server/imserver/wsplistener.go
index 2ea868d6..adf24332 100644
--- a/server/imserver/wsplistener.go
+++ b/server/imserver/wsplistener.go
@@ -137,10 +137,18 @@ func (this *WSPListener) decodePacket(conn net.Conn, buf []byte, offset *int, bu
 func (this *WSPListener) parseNetPkt() {
 	for {
 		if hdr, ok := <-this.ch; ok {
-			hdr.Msg = cs.ParsePb(hdr.MsgId, hdr.Data)
-			if hdr.Msg != nil {
-				hdr.Entry.Init(hdr)
-				app.addNetMsg(hdr)
+			if hdr.MsgId < f5.WSP_SS_MAX_MSGID {
+				hdr.Msg = ss.ParsePb(hdr.MsgId, hdr.Data)
+				if hdr.Msg != nil {
+					hdr.Entry.Init(hdr)
+					app.addNetMsg(hdr)
+				}
+			} else {
+				hdr.Msg = cs.ParsePb(hdr.MsgId, hdr.Data)
+				if hdr.Msg != nil {
+					hdr.Entry.Init(hdr)
+					app.addNetMsg(hdr)
+				}
 			}
 		}
 	}
diff --git a/third_party/f5 b/third_party/f5
index ee97e3ef..096c5046 160000
--- a/third_party/f5
+++ b/third_party/f5
@@ -1 +1 @@
-Subproject commit ee97e3ef6b2f59a95675e7cdd7f0c653403eb53e
+Subproject commit 096c5046c962a4bcc5873aa5b539a0900e3cf4bd