HttpClient and using proxy - constantly getting 407

Question

Here is the code:

 HttpClient client = null;
 HttpClientHandler httpClientHandler = new HttpClientHandler()
 {
    Proxy = new WebProxy(string.Format(\"{0}:{         


        

Answer 1

I found some useful information about this here from social.msdn.microsoft.com. From the replies, tests I made and research into the System.Net.WebProxy Class you need to pass the proxy credentials into the proxy object, not the HttpClientHandler.

{
    Proxy = new WebProxy(string.Format("{0}:{1}", proxyServerSettings.Address, 
    proxyServerSettings.Port),false),
    PreAuthenticate = true,
    UseDefaultCredentials = false,
    Credentials = new System.Net.NetworkCredential(proxyServerSettings.UserName, 
                    proxyServerSettings.Password),
};

This actually is meant to authenticate the connection to the proxy, not the HttpClientHandler.