From 198a1ad966cb38ccc1697961914fa5b8b854df2f Mon Sep 17 00:00:00 2001
From: murgatroid99 <mlumish@google.com>
Date: Tue, 21 Jul 2015 14:27:56 -0700
Subject: Added user-agent setting code, and a test for it

---
 src/node/src/client.js        |  6 +++++-
 src/node/test/surface_test.js | 10 ++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/node/src/client.js b/src/node/src/client.js
index b7bad949d4..06a0f3637f 100644
--- a/src/node/src/client.js
+++ b/src/node/src/client.js
@@ -47,6 +47,7 @@ var Readable = stream.Readable;
 var Writable = stream.Writable;
 var Duplex = stream.Duplex;
 var util = require('util');
+var version = require('../package.json').version;
 
 util.inherits(ClientWritableStream, Writable);
 
@@ -517,7 +518,10 @@ function makeClientConstructor(methods, serviceName) {
         callback(null, metadata);
       };
     }
-
+    if (!options) {
+      options = {};
+    }
+    options.GRPC_ARG_PRIMARY_USER_AGENT_STRING = 'grpc-node/' + version;
     this.server_address = address.replace(/\/$/, '');
     this.channel = new grpc.Channel(address, options);
     this.auth_uri = this.server_address + '/' + serviceName;
diff --git a/src/node/test/surface_test.js b/src/node/test/surface_test.js
index 18178e49e4..3cb68f8cd8 100644
--- a/src/node/test/surface_test.js
+++ b/src/node/test/surface_test.js
@@ -258,6 +258,16 @@ describe('Echo metadata', function() {
     });
     call.end();
   });
+  it('shows the correct user-agent string', function(done) {
+    var version = require('../package.json').version;
+    var call = client.unary({}, function(err, data) {
+      assert.ifError(err);
+    }, {key: ['value']});
+    call.on('metadata', function(metadata) {
+      assert(_.startsWith(metadata['user-agent'], 'grpc-node/' + version));
+      done();
+    });
+  });
 });
 describe('Other conditions', function() {
   var client;
-- 
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