@DTS Engineer are there updates on this by any chance? Since this is still blocking us. Thank you!

I created a small GitHub repository with the reproducible to demonstrate it: https://github.com/mxschmitt/cfnetwork-localhost-proxy Thank you for your help!

Regarding the platform, only macOS is in the scope for this request. Is this bug report publicly visible in some bug tracker? I tried to use kSCPropNetProxiesExcludeSimpleHostnames but I get use of undeclared identifier. Is it internally different to kCFNetworkProxiesExcludeSimpleHostnames? Regarding the snippet, I tried the following: [dictionary setObject:[NSNumber numberWithInteger:0] forKey:(NSString *)kCFNetworkProxiesExcludeSimpleHostnames] Maybe I understand it not correctly and 0 as a number is incorrect. I also tried various combinations out of kCFStreamPropertyProxyLocalBypass and kCFNetworkProxiesExcludeSimpleHostnames with booleans and integers. I will try to come up with a small reproducible to test it without the whole WebKit project.

Hi, thanks for your answer! I'm working on WebKit, so we are using NSURLSession see here. Probably a data task for visiting websites, but I can confirm it with my local build.