| This app can be used to manually test gRPC under changing network conditions. |
| |
| It makes RPCs in a loop, logging when the request is sent and the response is received. |
| |
| To test on the simulator, run `pod install`, open the workspace created by Cocoapods, and run the |
| app on an iOS device. Once running, tap a few times of each of the two buttons to make a few unary and streaming |
| calls. Then disable/enable different network interfaces (WiFi, cellular) on your device. |
| |
| The expected behavior is that the pending streaming calls fails immediately with error UNAVAILABLE. |
| Moreover, when network comes back, new calls have the same behavior. |
| |
| ``` |
| 2016-06-29 16:51:29.443 ConnectivityTestingApp[73129:3567949] Sending request. |
| ``` |
