IOS Network processing note points

Original link: http://www.jianshu.com/p/a086c33566be

One, AFN use note point 1. Block circular referencing bug resolution

2. Request the manager

• 1. Request the manager to store the memory

  • Request Manager as a variable, lazy loading, easy to manage all requests, use the Request manager variable to send the request.

2. Note: The controller hangs, we want to stop the request

• There are two ways to do this, stop the request, and depending on the situation, choose which method.
• Mode one: After canceling all requests, you can still use the Request Manager manager to send the request again, because the request manager has not yet destroyed in memory
  • Note: The way to use the scene also has: for example, we drag the table drop-down refresh loading the latest data, we should cancel the previous request, and then again request the network to load the latest data, so as to avoid unnecessary bug error.

Mode two: can no longer use the Request Manager manager to send the request, has been hung

3. Multiple reasons for Request failure processing

• Cause of error: various

  • Domain Name write error
  • Cancel task: [error.code = -999/error.code = nsurlerrorcancelled ( -999_)]
  • Timeout
  • 
    Error logic judgment processing

IOS Network processing note points