router.route('/envelopes').post(function(req, res) {
      var contype = req.headers['content-type'];
      if (!contype || contype.indexOf('application/json') !== 0)
        return res.send(400);

      var payload = req.body;
      if(!payload)
        return res.send(400);
      if(!payload.data)
        return res.json({ warning: "Empty data field."}); // Hmm... okay?

      var event_list = payload.data;

      for(let event of event_list){
        // As per the Caliper implementation, @type and @action are URIs:
        var event_name = event["@type"].split("/")[5];
        if(event["action"])
          event_name += "." + event["action"].split("#")[1];
        var event_body = JSON.stringify(event);

        client.publish(event_name, event_body);
      }

      return res.send(200);
    });

/*

events.js:141
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE :::8080
    at Object.exports._errnoException (util.js:870:11)
    at exports._exceptionWithHostPort (util.js:893:20)
    at Server._listen2 (net.js:1237:14)
    at listen (net.js:1273:10)
    at Server.listen (net.js:1369:5)
    at Function.app.listen (/home/tin/Projects/ExtensionEngine/mqtt-node-api/node_modules/express/lib/application.js:531:24)
    at MqttClient.<anonymous> (/home/tin/Projects/ExtensionEngine/mqtt-node-api/server.js:37:7)
    at emitOne (events.js:82:20)
    at MqttClient.emit (events.js:169:7)
    at MqttClient._handleConnack (/home/tin/Projects/ExtensionEngine/mqtt-node-api/node_modules/mqtt/lib/client.js:757:10)

*/