WIP: initial prototype

- Standardized event emitters
- Refactored transport.request to have a better handling of the state
- Added sniff event
- Improved abort handling

lib/Connection.js

@@ -77,6 +77,15 @@ class Connection {
       }
     })
 
+    // updates the ended state
+    request.on('abort', () => {
+      debug('Request aborted', params)
+      if (ended === false) {
+        ended = true
+        this._openRequests--
+      }
+    })
+
     // Disables the Nagle algorithm
     request.setNoDelay(true)