在iOS中，我们如何增加每个主机的HTTP连接限制？

Question

Using the Xcode networking tool, I analyzed that I am able to establish only 4 TCP connections per host at a time. It seems iOS has a default TCP connection limit of 4 per host.

How can we increase that limit?

Answer 1

EDIT : As stated by the OP this has changed in iOS 8: See Apple's documentation.

Original post :

This is a limit in iOS you cannot change it.

See : On iOS URL Connection Parallelism and Thread Pools

Answer 2

I found a solution to this. We can change the NSURLSession 's default settings such as HTTPMaximumConnectionsPerHost or ShouldUsePipelining by accessing [NSURLSessionConfiguration defaultSessionConfiguration] .

[NSURLSessionConfiguration defaultSessionConfiguration].HTTPMaximumConnectionsPerHost = 10;