Send client properties

lib/api.js

@@ -9,6 +9,21 @@ var QS = require('querystring');
 var defer = require('when').defer;
 var Connection = require('./connection').Connection;
 var clone = require('util')._extend.bind(null, {});
+var fmt = require('util').format;
+
+var CLIENT_PROPERTIES = {
+  "product": "amqplib",
+  "version": require('../package.json').version,
+  "platform": fmt('Node.JS %s', process.version),
+  "information": "http://squaremo.github.io/amqp.node",
+  "capabilities": {
+    "publisher_confirms": true,
+    "exchange_exchange_bindings": true,
+    "basic.nack": true,
+    "consumer_cancel_notify": false
+  }
+};
+
 
 // Parse a URL to get the options used in the opening protocol
 function openOptionsFromURL(parts) {
@@ -33,7 +48,7 @@ function openOptionsFromURL(parts) {
 
   return {
     // start-ok
-    'clientProperties': {},
+    'clientProperties': CLIENT_PROPERTIES,
     'mechanism': 'PLAIN',
     'response': new Buffer(['', user, passwd].join(String.fromCharCode(0))),
     'locale': q.locale || 'en_US',
@@ -53,7 +68,7 @@ function openOptionsFromURL(parts) {
 function connect(url, socketOptions) {
   // tls.connect uses `util._extend()` on the options given it, which
   // copies only properties mentioned in `Object.keys()`, when
-  // processing the options. So I have to makes copies too, rather
+  // processing the options. So I have to make copies too, rather
   // than using `Object.create()`.
   var sockopts = clone(socketOptions || {});
   url = url || 'amqp://localhost';