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

lib/wire/index.js

@@ -2,5 +2,15 @@ var path = require('path')
 
 var ProtoBuf = require('protobufjs')
 
-module.exports =
-  ProtoBuf.loadProtoFile(path.join(__dirname, 'wire.proto')).build()
+var wire = ProtoBuf.loadProtoFile(path.join(__dirname, 'wire.proto')).build()
+
+wire.ReverseMessageType = Object.keys(wire.MessageType)
+  .reduce(
+    function(acc, type) {
+      acc[wire.MessageType[type]] = type
+      return acc
+    }
+  , Object.create(null)
+  )
+
+module.exports = wire