From 9e5d77e06500269266545998c17e0324f8ea6fce Mon Sep 17 00:00:00 2001
From: Jessica Lord <jessica.lord@mongodb.com>
Date: Mon, 20 Nov 2017 17:09:34 -0500
Subject: [PATCH] fix(url parser): compare string from first period on

---
 lib/url_parser.js                   | 15 ++++++---------
 test/functional/url_parser_tests.js |  4 +---
 2 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/lib/url_parser.js b/lib/url_parser.js
index 2bb89361d9..829303717b 100644
--- a/lib/url_parser.js
+++ b/lib/url_parser.js
@@ -74,15 +74,12 @@ module.exports = function(url, options, callback) {
   }
 };
 
-function matchesParentDomain(srvAddress, parentDomain, domains) {
-  let srv = srvAddress.split('.');
-  let parent = parentDomain.split('.');
-  for (let i = 1; i <= domains - 1; i++) {
-    if (srv[srv.length - i] !== parent[parent.length - i]) {
-      return false;
-    }
-  }
-  return true;
+function matchesParentDomain(srvAddress, parentDomain) {
+  let regex = /^.*?\./;
+  let srv = `.${srvAddress.replace(regex, '')}`;
+  let parent = `.${parentDomain.replace(regex, '')}`;
+  if (srv.endsWith(parent)) return true;
+  else return false;
 }
 
 function parseHandler(address, options, callback) {
diff --git a/test/functional/url_parser_tests.js b/test/functional/url_parser_tests.js
index f9a13e550b..e6bfcc76cb 100644
--- a/test/functional/url_parser_tests.js
+++ b/test/functional/url_parser_tests.js
@@ -1260,13 +1260,11 @@ describe('Url SRV Parser', function() {
   /**
    * @ignore
    */
-  it.only("should fail because returned host name's parent (build.10gen.cc) misses 'test'", {
+  it("should fail because returned host name's parent (build.10gen.cc) misses 'test'", {
     metadata: {
       requires: { topology: ['single'] }
     },
     test: function(done) {
-      // TODO it does return 'test'
-      // test.build.10gen.cc
       parse('mongodb+srv://test13.test.build.10gen.cc', function(err) {
         expect(err).to.exist;
         expect(err.message).to.equal('srv record does not share hostname with parent uri');