Make graceful shutdown more graceful by actually waiting for sockets (and others) to close. Ongoing effort.

lib/roles/triproxy.js

@@ -1,6 +1,7 @@
 var zmq = require('zmq')
 
 var logger = require('../util/logger')
+var lifecycle = require('../util/lifecycle')
 
 module.exports = function(options) {
   var log = logger.createLogger('triproxy')
@@ -31,4 +32,10 @@ module.exports = function(options) {
   pull.bindSync(options.endpoints.pull)
   pull.on('message', proxy(dealer))
   log.info('PULL socket bound on', options.endpoints.pull)
+
+  lifecycle.observe(function() {
+    pub.close()
+    dealer.close()
+    pull.close()
+  })
 }