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So i am doing a network calls to retrieve image and using that i am show a kind of a video.
After a while i can see the memory lose and energy impact:

after a while my app crushed and i got :"Terminated due to memory issue error"

Before that i got that error from the image caller method:"error from dataResponse:The operation couldn’t be completed. No space left on device"

This are the two method i use:

class InstallationViewController: BaseViewController {

 func imageCaller(url: String , success: @escaping (UIImage) -> Void, failure: @escaping () -> Void) 
 let handler = AuthenticateHandler()
 self.urlSession = URLSession(configuration: URLSessionConfiguration.default, delegate: handler, delegateQueue: OperationQueue.main)

 self.imageThumbnailTask = urlSession?.dataTask(with: URL(string:url)!) data, res, err in

 if err != nil 
 print("error from dataResponse:(err?.localizedDescription ?? "Response Error")")
 failure()
 return
 
 DispatchQueue.main.async 

 if let imageData = data, let image = UIImage(data: imageData) 
 success(image)
 URLCache.shared.removeAllCachedResponses()

 
 
 
 self.imageThumbnailTask?.resume()


 func imageThumbnailcall() 
 self.indicaotrTimer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(self.HandleOverTime), userInfo: nil, repeats: false)

 self.imageCaller( url: self.isShowingThermal ? self.thermalUrl : self.visualUrl, success: (image) in

 self.indicaotrTimer?.invalidate()

 DispatchQueue.main.async
 self.imageLoaderIndicator.stopAnimating()
 self.backGroundImageView.image = image
 
 if self.isInVC 
 self.imageThumbnailcall()
 
 ) 
 self.imageLoaderIndicator.stopAnimating()
 

Worth mentioning that this line:

 let handler = AuthenticateHandler()
 self.urlSession = URLSession(configuration: URLSessionConfiguration.default, delegate: handler, delegateQueue: OperationQueue.main)

for digest protocol

Looks like you have a retain cycle in your closure in the imageThumbnailcall function.
The closure creates a strong reference to self, and since it's a recursive function you will run out of memory pretty quick.
You need to capture self as [weak self] or [unowned self] in the closure.
Example using [unowned self]:

func imageThumbnailcall() 
 self.indicaotrTimer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(self.HandleOverTime), userInfo: nil, repeats: false)

 self.imageCaller( url: self.isShowingThermal ? self.thermalUrl : self.visualUrl, success: [unowned self] (image) in

 self.indicaotrTimer?.invalidate()

 DispatchQueue.main.async
 self.imageLoaderIndicator.stopAnimating()
 self.backGroundImageView.image = image
 
 if self.isInVC 
 self.imageThumbnailcall()
 
 ) 
 self.imageLoaderIndicator.stopAnimating()
 

If you want to learn more about

Looks like you're recursively calling imageThumbnailcall. If you don't end the recursion at some point, you could see exactly the symptoms that you are reporting.

 if self.isInVC 
 self.imageThumbnailcall()
 

Are you making sure to set isInVC properly so you break out of the recursive loop?