static CFProxySettings ()
{
IntPtr handle = CFObject.dlopen (CFNetwork.CFNetworkLibrary, 0);
kCFNetworkProxiesHTTPEnable = CFObject.GetCFObjectHandle (handle, "kCFNetworkProxiesHTTPEnable");
kCFNetworkProxiesHTTPPort = CFObject.GetCFObjectHandle (handle, "kCFNetworkProxiesHTTPPort");
kCFNetworkProxiesHTTPProxy = CFObject.GetCFObjectHandle (handle, "kCFNetworkProxiesHTTPProxy");
kCFNetworkProxiesProxyAutoConfigEnable = CFObject.GetCFObjectHandle (handle, "kCFNetworkProxiesProxyAutoConfigEnable");
kCFNetworkProxiesProxyAutoConfigJavaScript = CFObject.GetCFObjectHandle (handle, "kCFNetworkProxiesProxyAutoConfigJavaScript");
kCFNetworkProxiesProxyAutoConfigURLString = CFObject.GetCFObjectHandle (handle, "kCFNetworkProxiesProxyAutoConfigURLString");
CFObject.dlclose (handle);
}