c#httpclient 代理_C＃-HttpClient和使用代理-不断得到407

您将代理凭据设置在错误的位置。

httpClientHandler.Credentials是在代理已建立连接之后提供给服务器的凭据。 如果您弄错了这些，则可能会收到401或403响应。

您需要设置提供给代理的凭据，否则它将首先拒绝将您连接到服务器。 您提供给代理的凭据可能与您提供给服务器的凭据不同。 如果您弄错了这些，将得到407响应。 您得到的是407，因为您根本没有设置这些设置。

// First create a proxy object

var proxy = new WebProxy

{

Address = new Uri($"http://{proxyHost}:{proxyPort}"),

BypassOnLocal = false,

UseDefaultCredentials = false,

// *** These creds are given to the proxy server, not the web server ***

Credentials = new NetworkCredential(

userName: proxyUserName,

password: proxyPassword)

};

// Now create a client handler which uses that proxy

var httpClientHandler = new HttpClientHandler

{

Proxy = proxy,

};

// Omit this part if you don't need to authenticate with the web server:

if (needServerAuthentication)

{

httpClientHandler.PreAuthenticate = true;

httpClientHandler.UseDefaultCredentials = false;

// *** These creds are given to the web server, not the proxy server ***

httpClientHandler.Credentials = new NetworkCredential(

userName: serverUserName,

password: serverPassword);

}

// Finally, create the HTTP client object

var client = new HttpClient(handler: httpClientHandler, disposeHandler: true);