Overview/Description
Defensive programming in iOS has to do with using coding practices and techniques to create apps that are reliable, predictable, and resilient. This course will teach you about methods and best practices for interacting safely and easily with the Internet from within an iOS app.

Target Audience
iOS developers who have experience creating apps using the Objective-C and Swift languages, and who are interested in learning to employ defensive programming techniques for iOS apps.

Prerequisites
None

Expected Duration (hours)
2.2

Lesson Objectives

Managing Network Interaction

start the course

create a TCP client connection from an iOS app

send and receive data over a TCP connection in an iOS app

determine when an iOS app can and cannot access the Internet

determine when an iOS app can and cannot reach a specific IP address

determine when an iOS app can and cannot access the Internet

install and configure the network link conditioner to be able to test iOS apps in different connection conditions

use CF functions to encode URLs

use CF functions to decode URLs

use NSURLConnection to make synchronous and asynchronous network calls

use NSURLConnection to make asynchronous network calls without using custom delegates

create and apply a configuration object to an NSURLSession instance

request a URL in a simple manner using NSURLSession and system delegates

request a URL in a flexible manner using NSURLSession and custom delegates

stop script execution in any HTML loaded into a WebView

disallow Internet traffic over cellular connections in an iOS app

capture and handle redirect responses from a server

use NSURLSession to reliably download and save files in an iOS app

use NSURLSession to handle users stopping and starting download operations

use NSURLSession to handle downloads that fail

use NSURLSession to upload files to a web server

use common techniques for managing network interaction

Course Number:
sd_dpio_a02_it_enus

Expertise Level
Intermediate