Slow down internet for iOS simulator

31
votes

I have a random crash in my iOS app. This happens when on slow internet connection. My office internet speed is too fast.

For testing on simulator, I installed Network Link Conditioner as mentioned here: Installing Apple's Network Link Conditioner Tool

Now the problem is that, I selected a slower connection profile but still I'm having the normal (fast) internet speed in simulator.

I also created my own profile and set the download bandwidth to 5kbps but still no use.

I have: Mackbook retina, OSX 10.7.5, XCode: 4.4.1

Restarting Xcode and Simulator also didn't work.

Are there any additional settings required for Network Link Conditioner? Or should I do something else to regenerate the crash? Any help?

3
iphonexcodeios-simulator
If your Mac is hardwired, switch to wireless. And maybe start 2-3 megadownloads in other windows. – Hot Licks
@HotLicks I am on wireless and I already had tried this using torrents but it works randomly. 1-2 out of 10 tries. – Abdullah Umer
what do you use as your server ? some, like nginx allow you to throttle bandwith on server side – Bastian
I don't know too much about servers but I have a DSL connection with wifi router. The subscription is 20Mbps. – Abdullah Umer
@AbdullahUmer Just cover your WiFi router with aluminum foil until the connection is very bad and thus slow. Also, try disabling the WiFi on your computer while your App is downloading and see how it reacts. You can check the connection speed on the computer by holding down ALT button and clicking on the wifi. Then it will tell you the transmit rate (mine shows 300 which is 300 Mbit/s). – Sverrisson

3 Answers

51
votes

You can set the network to slow characteristic by testing on devices. Go to Settings -> Developer Settings -> Network Link Conditioner -> Enable. This is for iPhone/iPad running iOS 6 Network Link Conditioner is also available for the Mac in "Additional Tools for Xcode" for testing in the Simulator.

Note: It appears after device has been connected to Xcode, enabled for development and some app run on it.

Here's how you can test HORRIBLE network performance: enter image description here

7
votes

What about a development proxy server to simulate slow connections? One that looks promising is http://www.charlesproxy.com/

0
votes

Can't you use a ipad/iphone connected to your mac to reproduce the crash ?

ios6 contains a network link conditioner, too: http://www.neglectedpotential.com/2012/09/ios6-network-link-conditioner/