Fix direct device control not extending owner timeout.

lib/wire/channelmanager.js

@@ -8,13 +8,27 @@ function ChannelManager() {
 
 util.inherits(ChannelManager, events.EventEmitter)
 
-ChannelManager.prototype.register = function(id, timeout) {
-  this.channels[id] = {
-    timeout: timeout
+ChannelManager.prototype.register = function(id, options) {
+  var channel = this.channels[id] = {
+    timeout: options.timeout
+  , alias: options.alias
   , lastActivity: Date.now()
   , timer: null
   }
 
+  if (channel.alias) {
+    // The alias can only be active for a single channel at a time
+    if (this.channels[channel.alias]) {
+      throw new Error(util.format(
+        'Cannot create alias "%s" for "%s"; the channel already exists'
+      , channel.alias
+      , id
+      ))
+    }
+
+    this.channels[channel.alias] = channel
+  }
+
   // Set timer with initial check
   this.check(id)
 }
@@ -24,6 +38,9 @@ ChannelManager.prototype.unregister = function(id) {
   if (channel) {
     delete this.channels[id]
     clearTimeout(channel.timer)
+    if (channel.alias) {
+      delete this.channels[channel.alias]
+    }
   }
 }