From c059946a75cab05a38dfb0c93afdbc0ee824d3a3 Mon Sep 17 00:00:00 2001
From: Muxi Yan <mxyan@google.com>
Date: Wed, 9 Jan 2019 18:26:22 -0800
Subject: Fix bug where remote host's trailing slash is not removed, causing
 name resolution failure

---
 src/objective-c/GRPCClient/private/GRPCChannelPool.m | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/objective-c/GRPCClient/private/GRPCChannelPool.m b/src/objective-c/GRPCClient/private/GRPCChannelPool.m
index a323f0490c..60a33eda82 100644
--- a/src/objective-c/GRPCClient/private/GRPCChannelPool.m
+++ b/src/objective-c/GRPCClient/private/GRPCChannelPool.m
@@ -236,6 +236,12 @@ static const NSTimeInterval kDefaultChannelDestroyDelay = 30;
     return nil;
   }
 
+  // remove trailing slash of hostname
+  NSURL *hostURL = [NSURL URLWithString:[@"https://" stringByAppendingString:host]];
+  if (hostURL.host && hostURL.port == nil) {
+    host = [hostURL.host stringByAppendingString:@":443"];
+  }
+
   GRPCPooledChannel *pooledChannel = nil;
   GRPCChannelConfiguration *configuration =
       [[GRPCChannelConfiguration alloc] initWithHost:host callOptions:callOptions];
-- 
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