david-hoze

This is a reconstruction of http://www.roman10.net/2011/11/27/how-to-calculate-iptcpudp-checksumpart-2-implementation/ The site is gone so I took it from the archive for the sake of C Programming TCP Checksum's answer Enjoy! All credits go to https://github.com/roman10.

This is a follow up of the previous post, how to calculate IP/TCP/UDP checksum part 1 — theory.

IP Header Checksum Calculation Implementation

To calculate the IP checksum, one can use the code below,

david-hoze

//
//  CollectionViewFetchedResultsStandaloneDelegateProvider.swift
//  Reporty
//
//  Created by Amitai Hoze on 06/04/2016.
//  Copyright © 2016 Reporty Homeland Security Ltd. All rights reserved.
//

import CoreData
import Foundation

david-hoze

class Point: NSObject {
  
  var x: Int
  var y: Int
  
  init(_ x: Int,_ y: Int) {
    self.x = x
    self.y = y
  }
}