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Editorial Team
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Asked: 2026-06-02T14:48:28+00:00

What would be the most appropriate way to chain asynchronous NSURLConnections? For example, I

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What would be the most appropriate way to chain asynchronous NSURLConnections? For example, I need to register a user with a web service. The workflow would be as follows:
Get Register Token => Use token to Register => Get Login Token => Use token to Login.

I know how to create an asynchronous NSURLConnection, but I’m unsure how to make sure the previous connection has finished before moving on. I know I can achieve this using NSURLConnection sendSynchronousRequest but I don’t like my main thread being blocked while these chained requests happen.

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  1. Editorial Team

    We did EXACTLYA this when we built our first version of SignMeOut for iPhone. We created a subclass of NSUrlconnection and gave it an identifying tag do in the connectionDidFinish you would be able to use a simple switch/case with an enum. Works great – you can see the whole flow and example and code in our blog

    http://www.isignmeout.com/multiple-nsurlconnections-viewcontroller/

    UPDATE

    I’ve modified the NSURLConnection subclass into a much simpler Category. Most of the usage is the same but cleaner using the same class

    https://github.com/Shein/Categories

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