From c827fbc1d044f31a1f925e52e07c843f88094a74 Mon Sep 17 00:00:00 2001
From: Muxi Yan <mxyan@google.com>
Date: Thu, 1 Nov 2018 13:06:31 -0700
Subject: [PATCH] Log failures when unable to create call or channel

---
 src/objective-c/GRPCClient/private/GRPCWrappedCall.m | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index 100d4cf2914..577002e7a85 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -257,8 +257,13 @@
     // queue. Currently we use a singleton queue.
     _queue = [GRPCCompletionQueue completionQueue];
     _channel = [GRPCChannel channelWithHost:host callOptions:callOptions];
+    if (_channel == nil) {
+      NSLog(@"Failed to get a channel for the host.");
+      return nil;
+    }
     _call = [_channel unmanagedCallWithPath:path completionQueue:_queue callOptions:callOptions];
     if (_call == NULL) {
+      NSLog(@"Failed to create a call.");
       return nil;
     }
   }