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iosswiftfoundationurlsession

Example of URLProtocol usage?

I'm trying to figure out how URLProtocol works. Can you provide some cases of URLProtocol usage? What type of problems can it solve?

Solution

  • URLProtocol allows you to insert yourself into the URL loading system. I've used that for several things, from a simple offline caching system for UIWebView to intercepting Pandora traffic.

    I also sometimes implement my own schemes with an URLProtocol. For example, the server may send down a custom resource: link, and I'll use an URLProtocol to read that out of the bundle resources (basically the same as WKWebView's WKURLSchemeHandler for this).