将凭证传递给WebProxy？

Question

我有一个自定义HTTP类用于我正在使用的服务.最终它将以方法的形式包含特定于服务的请求.我需要做的是设置用户提供的代理的凭据,例如,如果用户有代理列表.

以下是我的代码.我已经评论了我需要设置凭据的部分.我查看了MSDN上的iCredentials类,但我看不到如何从字符串中设置它们.

class RequestClass
{
    private CookieContainer cookieJar;
    private WebProxy proxy = null;

    public RequestClass()
    {
        this.cookieJar = new CookieContainer();
    }

    public RequestClass(String proxyURL, int port)
    {
        this.proxy = new WebProxy(proxyURL, port);
    }

    public RequestClass(String proxyURL, int port, String username, String password)
    {
        this.proxy = new WebProxy(proxyURL, port);
        // Need to set them here
    }

    // HTTP Get Request
    public HttpWebResponse getRequest(String url, NameValueCollection headers)
    {
        HttpWebRequest getRequest = (HttpWebRequest)WebRequest.Create(url);
        getRequest.Method = "GET";
        getRequest.CookieContainer = cookieJar;

        foreach (String key in headers.Keys)
        {
            getRequest.Headers.Add(key, headers[key]);
        }

        return (HttpWebResponse)getRequest.GetResponse();
    }

    // HTTP Post Request
    public HttpWebResponse postRequest(String url, String postData, NameValueCollection headers)
    {
        byte[] postBytes = Encoding.ASCII.GetBytes(postData);

        HttpWebRequest postRequest = (HttpWebRequest)WebRequest.Create(url);
        postRequest.Method = "POST";
        postRequest.CookieContainer = cookieJar;
        postRequest.ContentLength = postBytes.Length;
        postRequest.ProtocolVersion = HttpVersion.Version10;

        foreach(String key in headers.Keys)
        {
            postRequest.Headers.Add(key, headers[key]);
        }

        Stream postRequestStream = postRequest.GetRequestStream();

        postRequestStream.Write(postBytes, 0, postBytes.Length);
        postRequestStream.Close();

        return (HttpWebResponse)postRequest.GetResponse();
    }
}

}

Answer 1

我认为这应该有效:

public RequestClass(String proxyURL, int port, String username, String password)
{
    //Validate proxy address
    var proxyURI = new Uri(string.Format("{0}:{1}", proxyURL, port));

    //Set credentials
    ICredentials credentials = new NetworkCredential(username, password);

    //Set proxy
    this.proxy =  = new WebProxy(proxyURI, true, null, credentials );
}