public static HttpWebRequest SetProxyFromConfig(this HttpWebRequest request, ProxyConfig config)
{
//Reference:
//https://docs.microsoft.com/en-us/dotnet/framework/network-programming/automatic-proxy-detection
//request.Proxy = null; for no proxy
//Default behaviour for WebRequests is to use application domain's default proxy in DefaultWebProxy property.
//request.Proxy = WebRequest.DefaultWebProxy();
request.Proxy = CreateWebProxyFromConfig(config);
return(request);
}
public static IWebProxy CreateWebProxyFromConfig(ProxyConfig config)
{
if (config.Disabled)
{
return(null);
}
IWebProxy proxy = null;
if (config.UseSystemDefaults)
{
proxy = WebRequest.GetSystemWebProxy();
proxy.Credentials = CredentialCache.DefaultCredentials;
return(proxy);
}
Uri uri;
try
{
uri = new Uri($"{config.Hostname}:{config.Port}");
}
catch (Exception e)
{
Logger.Warn("Could not read proxy server settings. Using no Proxy Server.", e);
return(null);
}
proxy = config.BypassList == null ?
new WebProxy(uri, config.BypassOnLocal) :
new WebProxy(uri, config.BypassOnLocal, config.BypassList);
if (config.RequiresAuthentication)
{
if (config.UseSystemCredentials)
{
proxy.Credentials = CredentialCache.DefaultCredentials;
}
else
{
var credentials = new NetworkCredential(config.Username, config.Password, config.Domain);
proxy.Credentials = credentials;
}
}
return(proxy);
}