support UserIP2 extension

HubConnection.go

@@ -245,7 +245,35 @@ func (this *HubConnection) processProtocolMessage(message string) {
 		}
 
 	case "$UserIP":
-		// TODO
+		this.userLock.Lock()
+
+		pairs := strings.Split(commandParts[1], "$$")
+		notifyOfUpdate := make([]string, 0, len(pairs))
+
+	nextIPPair:
+		for _, pair := range pairs {
+			parts := strings.SplitN(pair, " ", 2)
+			ip2nick := parts[0]
+			ip2addr := parts[1]
+
+			uinfo, ok := this.users[ip2nick]
+			if !ok {
+				this.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Recieved IP '" + ip2addr + "' for unknown user '" + ip2nick + "'"})
+				continue nextIPPair
+			}
+
+			if uinfo.IPAddress != ip2addr {
+				uinfo.IPAddress = ip2addr
+				notifyOfUpdate = append(notifyOfUpdate, ip2nick)
+				this.users[ip2nick] = uinfo
+			}
+		}
+
+		this.userLock.Unlock()
+
+		for _, nick := range notifyOfUpdate {
+			this.processEvent(HubEvent{EventType: EVENT_USER_UPDATED_INFO, Nick: nick})
+		}
 
 	case "$ForceMove":
 		this.Hco.Address = HubAddress(commandParts[1])

UserInfo.go

@@ -24,6 +24,7 @@ type UserInfo struct {
 	HubsRegistered   uint64
 	HubsOperator     uint64
 	IsOperator       bool
+	IPAddress        string
 }
 
 var rx_myinfo *regexp.Regexp