ios - Async HTTP response is holding some seconds after finish the request -


the snippet of code below ran issues while ago, run on successful async http response. after response received user still waiting few seconds (or longer) before segue performed. 

someservice.doaction(input, callback: {   self.performseguewithidentifier("some-id", sender:self) })

why segue not performed after http response successful?

try call code on main tread:

someservice.doaction(input, callback: {     dispatch_async(dispatch_get_main_queue(), {         self.performseguewithidentifier("some-id", sender:self)     }) })

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