Java 如何配置 HTTPClient 以针对 SOCKS 代理进行身份验证？
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How can I configure HTTPClient to authenticate against a SOCKS proxy?
提问by abahgat
I need to set up proxy authentication against a SOCKS proxy. I found out this postgiving instructions that appear to work with common HTTP proxies.
我需要针对 SOCKS 代理设置代理身份验证。我发现这篇文章给出的说明似乎适用于常见的 HTTP 代理。
httpclient.getHostConfiguration().setProxy("proxyserver.example.com", 8080);
HttpState state = new HttpState();
state.setProxyCredentials(new AuthScope("proxyserver.example.com", 8080),
new UsernamePasswordCredentials("username", "password"));
httpclient.setState(state);
Would that work with SOCKSproxies as well or do I have to do something different?
这是否也适用于SOCKS代理，还是我必须做一些不同的事情？
采纳答案by Jesper
The Features pageof Apache HTTPClient says:
Apache HTTPClient的功能页面说：
Transparent connections through SOCKS proxies (version 4 & 5) using native Java socket support.
使用原生 Java 套接字支持通过 SOCKS 代理（版本 4 和 5）的透明连接。
With "transparent", I guess they mean that it works without you needing to do anything special. Do you have a SOCKS proxy available somewhere? Can't you just try it out to see if it works?
对于“透明”，我猜他们的意思是它不需要你做任何特别的事情就可以工作。您在某处有可用的 SOCKS 代理吗？你不能试试看它是否有效吗？
回答by tuergeist
Java supports Socks proxy configuration via preferences:
Java 通过首选项支持 Socks 代理配置：
socksProxyHostfor the host name of the SOCKS proxy serversocksProxyPortfor the port number, the default value being1080
socksProxyHostSOCKS 代理服务器的主机名socksProxyPort对于端口号，默认值为1080
e.g.
例如
java -DsocksProxyHost=socks.mydomain.com
(edit) For your example, if the socks proxy was configured in the way outlined before:
(编辑) 对于您的示例，如果以之前概述的方式配置了袜子代理：
httpclient.getHostConfiguration().setProxy("proxyserver.example.com", 8080);
Credentials cred = new UsernamePasswordCredentials("username","password");
httpclient.getState().setProxyCredentials(AuthScope.ANY, cred);
You can also use this variant (without httpclient):
你也可以使用这个变体（没有 httpclient）：
SocketAddress addr = new
InetSocketAddress("webcache.mydomain.com", 8080);
Proxy proxy = new Proxy(Proxy.Type.SOCKS, addr); // Type.HTTP for HTTP
So completing the previous example, we can now add:
所以完成前面的例子，我们现在可以添加：
URL url = new URL("http://java.sun.com/");
URConnection conn = url.openConnection(proxy);
HTH
HTH
回答by ZZ Coder
SOCKS is not supported by HttpClient 3 natively. You can try the SOCKS support in JDK as suggested by others. The side effect is that your whole JVM will go through the same SOCKS proxy.
HttpClient 3 本身不支持 SOCKS。您可以按照其他人的建议尝试 JDK 中的 SOCKS 支持。副作用是您的整个 JVM 将通过相同的 SOCKS 代理。
Java 5 supports Username/Password authentication in SOCKS (type 2). All you have to do is to setup the authenticator like this,
Java 5 支持 SOCKS 中的用户名/密码认证（类型 2）。你所要做的就是像这样设置验证器，
Authenticator.setDefault(new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password.toCharArray());
}
});
Again, this may not work for you because it affects all authentication in your JVM (HTTP auth, Proxy Auth).
同样，这可能对您不起作用，因为它会影响 JVM 中的所有身份验证（HTTP 身份验证、代理身份验证）。
回答by Tomer
You can provide a custom socket factory which implements the SOCKS protocol, and register it as your default HTTP protocol handler. This solution has a limitation similar to tuergeist's answer above has - it applies globally, to any HTTP connection you'll establish through HttpClient.
您可以提供实现 SOCKS 协议的自定义套接字工厂，并将其注册为您的默认 HTTP 协议处理程序。此解决方案具有类似于上面 tuergeist 的答案的限制 - 它在全球范围内适用于您将通过 HttpClient 建立的任何 HTTP 连接。
If you find this a problem, take a look at this correspondence, where Oleg suggests using HttpClient 4.0, but also refers to a possible patch in HostConfiguration class for HttpClient 3.x.
如果您发现这是一个问题，请查看此对应关系，其中 Oleg 建议使用 HttpClient 4.0，但也参考了 HostConfiguration 类中用于 HttpClient 3.x 的可能补丁。
Another possible solution, which is my personal favorite, is to write a wrapper HTTP proxy to the socks proxy.
另一个可能的解决方案，也是我个人最喜欢的，是编写一个包装 HTTP 代理到 socks 代理。
回答by Anshul Chaurasia
I tried
我试过
System.setProperty("socksProxyHost", "socks.xyz.com");
System.setProperty("socksProxyPort", "1000");
and it's working fine.
它工作正常。
