How to use sockets on objective-c for iOS?

Question

Objective-C

I'm making an iOS application that needs to connect to a server over a TCP socket and receive/send data, but I can't find anything on the internet about iOS sockets. Tell me which way to look to study iOS sockets.

Answer 1

1. Comprehensive material from raywenderlich.com.
2. Official manual .
3. Another good article from maniacdev.com.

Answer 2

You need to look at the manual.
Or to google.
For each of the search results on the first page of Google there is comprehensive information.