ios - AFHTTPResponseSerializer subclass not calling error handler when data doesn't validate -


i'm subclassing afhttpresponseserializer because need validation. i'm overriding these 2 methods:

override func validate(_ response: httpurlresponse?, data: data?) throws {   // checking logic    throw nserror(....) }  override func responseobject(for response: urlresponse?, data: data?, error: nserrorpointer) -> any? {   {     try validate(response as? httpurlresponse, data: data)   } catch let e {     return nserror(...)   } }  // later in code manager.post(url, parameters: params, ...)

i put break points in these 2 functions , saw error thrown in validate function , nserror returned in responseobject, looks never triggers error handler post method. trigger success handler. why this?


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