我正在使用Apache HttpComponents（4.5.2），我试图通过代理服务器（SSH隧道）请求HTTPS页面。

问题是根据日志Client发送第一个请求时没有Proxy-Authoration标头，但在Proxy响应407错误（需要代理身份验证）后，它会使用发送Proxy-Authoration标头退出身份验证。

我认为我的代码有问题，我需要像启用原始身份验证这样的东西，但是我找不到任何关于如何做到这一点的信息。

下面是确认我的话的日志。

第一个请求：

03:12:06,643 DEBUG headers:135 - http-outgoing-0 >> CONNECT t.myhost.com:443 HTTP/1.1
03:12:06,643 DEBUG headers:138 - http-outgoing-0 >> Host: t.myhost.com
03:12:06,643 DEBUG headers:138 - http-outgoing-0 >> User-Agent: Apache-HttpClient/4.5.2 (Java/1.8.0_45)

03:12:06,793 DEBUG headers:124 - http-outgoing-0 << HTTP/1.1 407 Proxy Authentication Required
03:12:06,794 DEBUG headers:127 - http-outgoing-0 << Proxy-Authenticate: Basic realm="ProxyCompany"
03:12:06,794 DEBUG headers:127 - http-outgoing-0 << Proxy-Connection: close

//然后它使用包含的代理授权标头重试请求

03:12:06,795 DEBUG HttpAuthenticator:77 - Authentication required
03:12:06,795 DEBUG HttpAuthenticator:107 - 162.243.116.56:71223 requested authentication
03:12:06,795 DEBUG ProxyAuthenticationStrategy:174 - Authentication schemes in the order of preference: [Negotiate, Kerberos, NTLM, Digest, Basic]
03:12:06,795 DEBUG ProxyAuthenticationStrategy:203 - Challenge for Negotiate authentication scheme not available
03:12:06,796 DEBUG ProxyAuthenticationStrategy:203 - Challenge for Kerberos authentication scheme not available
03:12:06,796 DEBUG ProxyAuthenticationStrategy:203 - Challenge for NTLM authentication scheme not available
03:12:06,796 DEBUG ProxyAuthenticationStrategy:203 - Challenge for Digest authentication scheme not available
03:12:06,800 DEBUG HttpAuthenticator:157 - Selected authentication options: [BASIC [complete=true]]
03:12:06,800 DEBUG DefaultManagedHttpClientConnection:81 - http-outgoing-0: Close connection
03:12:06,801 DEBUG DefaultHttpClientConnectionOperator:138 - Connecting to /162.243.116.56:71223
03:12:06,942 DEBUG DefaultHttpClientConnectionOperator:145 - Connection established 192.168.0.100:13391<->162.243.116.56:71223
03:12:06,942 DEBUG HttpAuthenticator:198 - Generating response to an authentication challenge using basic scheme
03:12:06,947 DEBUG headers:135 - http-outgoing-0 >> CONNECT t.myhost.com:443 HTTP/1.1
03:12:06,947 DEBUG headers:138 - http-outgoing-0 >> Host: t.myhost.com
03:12:06,947 DEBUG headers:138 - http-outgoing-0 >> User-Agent: Apache-HttpClient/4.5.2 (Java/1.8.0_45)
03:12:06,947 DEBUG headers:138 - http-outgoing-0 >> Proxy-Authorization: Basic bHVtXXXXXXXXXXXXxOTE5NTUXXXXXXRmNmRkYmI1Mjk0MA==

03:12:07,304 DEBUG HttpAuthenticator:86 - Authentication succeeded
03:12:07,305 DEBUG ProxyAuthenticationStrategy:227 - Caching 'basic' auth scheme for http://162.243.116.56:71223 

这是我的代码（它是Scala，但很容易阅读）：

val credProvider = {
  val provider = new BasicCredentialsProvider()
  provider.setCredentials(AuthScope.ANY,
    new UsernamePasswordCredentials("myUser", "myPass"))
  provider
}

val connManager = {
  val mngr  = new PoolingHttpClientConnectionManager()
  mngr.setDefaultMaxPerRoute(Integer.MAX_VALUE)
  mngr.setMaxTotal(Integer.MAX_VALUE)
  mngr
}

val client = HttpClients.custom()
  .setConnectionManager(connManager)
  .disableRedirectHandling()
  .setDefaultCredentialsProvider(credProvider)
  .setProxy(new HttpHost(162.243.116.56, 71223 ))
  .build()

     val requestConfig = RequestConfig.custom()
       .setConnectTimeout(30000)
       .setConnectionRequestTimeout(30000)
       .build()


     val request = new HttpGet(url)
     request.setConfig(requestConfig)
     val response = client.execute(request)

我如何解决这个问题（使客户端始终发送代理授权）？