Open Radar

 
Area:
CFNetwork Framework

Summary:
We used NSURLConnection in our app and tried to migrate it to NSURLSession.
We are unable to unregister our protocol from sharedSession, so it's always called even after unregister command. We want to use another protocol in several cases. We tried to use sessionWithConfiguration, but it's not called with webView, so sessionWithConfiguration doesn't fit our needs.

Steps to Reproduce:
Precondition:
[NSURLProtocol registerClass:[FirstCustomProtocol class]];
Get shared session [NSURLSession sharedSession]. 
Execute one request (with custom protocol scheme) with sessionTask from this session.
The FirstCustomProtocol should be be asked
+ (BOOL)canInitWithRequest:(NSURLRequest *)request.


Steps:
Call [NSURLProtocol unregisterClass:[FirstCustomProtocol class]]; to unregister protocol (same way as unregistered protocols in NSURLConnection).





Expected Results:
Custom protocol class should not be called, because we unregistered it.

Actual Results:
The custom protocol is still called +canInitWithRequest:.

Version:
iOS 8.4.1, iOS 9.0.2, iOS 10.2, 10.3 beta

Notes:


Configuration:
Any device