HttpClient的4.2.2，并与用户名/密码代理(HttpClient 4.2.2 and p

我有一个HttpClient的4.2.2和代理使用用户名/密码有问题。 HttpClient的工作过程是这样：

项目清单
发送查询请求不代理的东西（但我设置为每个请求代理参数）
从鱿鱼获取响应与407错误
发送与代理的东西要求

这是非常奇怪的行为，是否有可能添加有关代理每个请求的信息？我试着硬编码“代理授权”头添加到每个请求，它工作正常，为什么HttpClient的不能做？

Java代码

DefaultHttpClient httpClient = new DefaultHttpClient();
httpClient.getParams().setParameter(PROTOCOL_VERSION, HTTP_1_1);
...
String proxyServer = getProxyServer();
int proxyPort = getProxyPort();
List<String> authpref = new ArrayList<String>();
authpref.add(AuthPolicy.BASIC);
httpClient.getParams().setParameter(AuthPNames.PROXY_AUTH_PREF, authpref);
String proxyUser = getProxyUser();
String proxyPassword = getProxyPassword();
CredentialsProvider credsProvider = httpClient.getCredentialsProvider();
credsProvider.setCredentials(new AuthScope(proxyServer, proxyPort), new UsernamePasswordCredentials(proxyUser, proxyPassword));
httpClient.setCredentialsProvider(credsProvider);
HttpHost proxy = new HttpHost(proxyServer, proxyPort, (proxyServer.indexOf("https") != 0) ? "http" : "https");
httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
...
HttpPut put = new HttpPut(url);

/*** hardcoded header ***/
//put.addHeader("Proxy-Authorization", "Basic eHRlbmR4LmRuZXByOnF3ZXJ0eQ==");
/*** hardcoded header ***/

put.setEntity(entity);
httpClient.execute(put);
httpClient.getConnectionManager().shutdown();


[DefaultClientConnection] Sending request: PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image1.jpg HTTP/1.1
[headers] >> PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image1.jpg HTTP/1.1
[headers] >> Authorization: Basic eGRldjo0YTFmNmMwOTgyYWRkMWQ0NDg1YjRhMGE4YWMxY2JjMWNiMTA0ODc1
[headers] >> Content-Length: 2
[headers] >> Host: 172.26.27.22:8080
[headers] >> Proxy-Connection: Keep-Alive
[headers] >> User-Agent: Apache-HttpClient/4.2.2 (java 1.5)
[DefaultClientConnection] Receiving response: HTTP/1.0 407 Proxy Authentication Required
[headers] << HTTP/1.0 407 Proxy Authentication Required
[headers] << Server: squid/2.7.STABLE8
[headers] << Date: Thu, 08 Nov 2012 10:09:49 GMT
[headers] << Content-Type: text/html
[headers] << Content-Length: 1431
[headers] << X-Squid-Error: ERR_CACHE_ACCESS_DENIED 0
[headers] << Proxy-Authenticate: Basic realm="Please, enter username and password"
[headers] << X-Cache: MISS from 172.26.27.94
[headers] << X-Cache-Lookup: NONE from 172.26.27.94:3128
[headers] << Via: 1.0 172.26.27.94:3128 (squid/2.7.STABLE8)
[headers] << Connection: close
[DefaultHttpClient] Authentication required
[DefaultHttpClient] 172.26.27.94:3128 requested authentication
[ProxyAuthenticationStrategy] Authentication schemes in the order of preference: [Basic]
[DefaultHttpClient] Selected authentication options: [BASIC]
[DefaultClientConnection] Connection 0.0.0.0:63344<->172.26.27.94:3128 closed
[DefaultClientConnectionOperator] Connecting to 172.26.27.94:3128
[RequestAddCookies] CookieSpec selected: best-match
[RequestAuthCache] Re-using cached 'basic' auth scheme for http://172.26.27.22:8080
[RequestAuthCache] No credentials for preemptive authentication
[RequestProxyAuthentication] Proxy auth state: CHALLENGED
[RequestProxyAuthentication] Generating response to an authentication challenge using basic scheme
[DefaultHttpClient] Attempt 2 to execute request
[DefaultClientConnection] Sending request: PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image1.jpg HTTP/1.1
[headers] >> PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image1.jpg HTTP/1.1
[headers] >> Authorization: Basic eGRldjo0YTFmNmMwOTgyYWRkMWQ0NDg1YjRhMGE4YWMxY2JjMWNiMTA0ODc1
[headers] >> Content-Length: 2
[headers] >> Host: 172.26.27.22:8080
[headers] >> Proxy-Connection: Keep-Alive
[headers] >> User-Agent: Apache-HttpClient/4.2.2 (java 1.5)
[headers] >> Proxy-Authorization: Basic eHRlbmR4LmRuZXByOnF3ZXJ0eQ==
[DefaultClientConnection] Receiving response: HTTP/1.0 201 Created
[headers] << HTTP/1.0 201 Created
[headers] << Content-Length: 0
[headers] << Date: Thu, 08 Nov 2012 10:09:49 GMT
[headers] << X-Cache: MISS from 172.26.27.94
[headers] << X-Cache-Lookup: MISS from 172.26.27.94:3128
[headers] << Via: 1.1 172.26.27.94:3128 (squid/2.7.STABLE8)
[headers] << Connection: keep-alive
[headers] << Proxy-Connection: keep-alive

鱿鱼日志

1352370666.778      0 172.26.27.94 TCP_DENIED/407 1870 PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image1.jpg - NONE/- text/html
1352370671.429      8 172.26.27.94 TCP_MISS/201 282 PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image1.jpg proxyuser DIRECT/172.26.27.22 -
1352370671.474      0 172.26.27.94 TCP_DENIED/407 1882 PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image2.jpg - NONE/- text/html
1352370671.486      7 172.26.27.94 TCP_MISS/201 282 PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image2.jpg proxyuser DIRECT/172.26.27.22 -

随着硬编码头

没有407错误在Java日志和日志鱿鱼

鱿鱼日志

1352370542.016      8 172.26.27.94 TCP_MISS/201 282 PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image1.jpg proxyuser DIRECT/172.26.27.22 -
1352370542.033      7 172.26.27.94 TCP_MISS/201 282 PUT http://172.26.27.22:8080/myapp/rest/2/3/29/image2.jpg proxyuser DIRECT/172.26.27.22 -

Answer 1:

使用HTTP代理认证过程在RFC2616中描述§14.33和§14.34，是完全按照你的HttpClient有看到。这包括：

代理发送与含有所述质询的Proxy-Authenticate头一个407（代理身份验证必需）响应适用于所请求的资源，
客户端发出与一个代理授权标头由包含认证信息的证书的一个新的请求。

实现与HttpClient的抢占式认证中描述本教程（节§4.8），并且需要预先填充客户对象的认证缓存。不幸的是，preauthenticating到代理服务器时，他们的代码不能正常工作。它可能是一个有点棘手，以了解如何得到它的权利，但实际上它是作为传递参数的构造函数BasicScheme简单：

AuthCache authCache = new BasicAuthCache();

AuthScheme basicAuthScheme = null;
if (isProxy) {
   basicAuthScheme = new BasicScheme(ChallengeState.PROXY);
} else {
   basicAuthScheme = new BasicScheme(ChallengeState.TARGET);
}

authCache.put(host, basicAuthScheme);
httpContext.setAttribute(ClientContext.AUTH_CACHE, authCache);

Answer 2:

这是你的AuthScope：

// You set proxyServer here vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
credsProvider.setCredentials(new AuthScope(proxyServer, proxyPort), new UsernamePasswordCredentials(proxyUser, proxyPassword));
httpClient.setCredentialsProvider(credsProvider);
// But here you are looking for the indexof https to determine if it is an SSL proxy
// is the String returned from getProxyServer() above a URL or a host name?
HttpHost proxy = new HttpHost(proxyServer, proxyPort, (proxyServer.indexOf("https") != 0) ? "http" : "https");
httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);

埋在我的上述评论 - 是getProxyServer（）URL或主机名返回的字符串？

编辑

我想我已经想通了，这是怎么回事。基本认证，必须在每次请求发送为它工作。如果要进行多次执行，你会需要有一些机制来缓存认证数据。通过在你现在的方式执行的客户端，没有“背景”作为一个在每次请求创建了一个可以存储。

其他项目看的是客户端教程部分4.7和4.8。如果您正在寻找完全消除407错误，然后用基本身份验证的请求，那么请务必阅读第4.8节。

非常密切地关注他们所定义的，因为这充当您的客户端的状态容器“localcontext”变量。