iOS Development Series-nsurlconnection

Overview

Nsurlconnection is responsible for sending requests to establish a client-to-server connection. Sends data to the server and collects response data from the server. Where the Nsurlrequest class is used to encapsulate a request that contains information such as a Nsurl object, a request method, a request header, a request timeout, and so on. It has a subclass of Nsmutableurlrequest.
Send a request for specific steps:
*创建一个NSURL对象，设置请求路径
*入NSURL创建的一个NSRULRequest对象，设置请求头、请求体。
*使用NSURLConnection发送网络请求

Nsurlconnection Sending requests

iOS Development Series-nsurlconnection