Get rid of switch statements in favor of an EventEmitter-based router for message handling.

lib/wire/router.js

@@ -0,0 +1,39 @@
+var events = require('events')
+var util = require('util')
+
+var wire = require('./')
+var log = require('../util/logger').createLogger('wire:router')
+
+function Router() {
+  if (!(this instanceof Router)) {
+    return new Router()
+  }
+
+  events.EventEmitter.call(this)
+}
+
+util.inherits(Router, events.EventEmitter)
+
+Router.prototype.handler = function() {
+  return function(channel, data) {
+    var wrapper = wire.Envelope.decode(data)
+      , type = wire.ReverseMessageType[wrapper.type]
+
+    if (type) {
+      this.emit(
+        wrapper.type
+      , channel
+      , wire[type].decode(wrapper.message)
+      , data
+      )
+    }
+    else {
+      log.warn(
+        'Unknown message type "%d", perhaps we need an update?'
+      , wrapper.type
+      )
+    }
+  }.bind(this)
+}
+
+module.exports = Router