![]() In the Today tab, tap Shuffle and wait for a moment. Now that you know about all the information the tool provides, it’s time to profile the app and see how it fares! Profiling and Inspecting the Appįirst, profile the starter app as a new session and start recording. However, in some instances, a task may have more than one transaction, for example when there are redirects or URL forwarding. In other words, and in its simplest terms, a transaction starts when you call resume() on a task, and it ends when the associated completion block is called. It begins when you call resume and calls the respective completion closures before it ends.Ī Transaction refers to a single instance of communication with a web service. Task and TransactionĪ Task is akin to a URLSessionDataTask or URLSessionDownloadTask. Thus, it works on all Apple devices and all HTTP traffic passing through the app when using any networking API. But, Instruments relies on the lower-level networking stack of Apple’s core frameworks. How the HTTP Traffic Instrument Worksįor communicating with web services, you use higher-level networking APIs such as URLSession. Next, you’ll learn how HTTP Traffic Instrument actually works. Note: You can also save the session to reference later by clicking File ▸ Save. You can remove the Network Connections Instrument as it’s unnecessary for this tutorial.
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