medium-ios-mutex-stream.swift

// Create http request
let message = CFHTTPMessageCreateRequest(kCFAllocatorDefault, "GET", self.url, kCFHTTPVersion1_1).takeRetainedValue()

// Create stream
let readStream = CFReadStreamCreateForHTTPRequest(kCFAllocatorDefault, message).takeRetainedValue()

// Set stream properties
CFReadStreamSetProperty(readStream, NSStreamNetworkServiceTypeBackground, NSStreamNetworkServiceTypeBackground)
CFReadStreamSetProperty(readStream, kCFStreamPropertyHTTPShouldAutoredirect, kCFBooleanTrue)

// Configure proxy
if let proxySettings = CFNetworkCopySystemProxySettings()?.takeRetainedValue() {
    CFReadStreamSetProperty(readStream, kCFStreamPropertyHTTPProxy, proxySettings)
}