Mikolaj Broniszewski created HTTPCLIENT-1966:
------------------------------------------------
Summary: System Proxy - HTTP and SOCKS
Key: HTTPCLIENT-1966
URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1966
Project: HttpComponents HttpClient
Issue Type: Bug
Components: HttpClient (Windows)
Affects Versions: 4.5.6, 4.5.5
Reporter: Mikolaj Broniszewski
Hello,
I have created a proxy server basing on squid solution. And I have hidden the
server (Apache Tomcat 8) which I would like to access behind this proxy (it's
not available from my local machine directly). Then, I have created an example
project which only connects to this hidden server basing on Apache HttpClient
libraries:
* org.apache.httpcomponents:httpcore:4.4.11
* org.apache.httpcomponents:httpclient:4.5.6
The code looks like:
{code:java}
public static void main(String ...args) throws Exception {
System.setProperty("https.proxyHost", "<proxy_url>");
System.setProperty("https.proxyPort", "<proxy_port>");
System.setProperty("socksProxyHost", "<proxy_url>");
System.setProperty("socksProxyPort", "<proxy_port>");
URI uri = new URI("https://<hidden_server_url>");
try (CloseableHttpClient build = HttpClientBuilder.create()
.useSystemProperties()
.build()) {
final HttpUriRequest uriRequest = RequestBuilder.get()
.setUri(uri)
.build();
try (CloseableHttpResponse response =
build.execute(uriRequest)) {
final StatusLine statusLine = response.getStatusLine();
System.out.println(statusLine.toString());
}
}
}
{code}
Unfortunately, as squid does not support SOCKS protocol, opening socket and
waiting for response hangs the program. I was thinking that maybe I'm basing on
invalid server configuration however when using below code everything works
fine for same system properties:
{code:java}
public static void main(String ...args) throws Exception {
System.setProperty("https.proxyHost", "<proxy_url>");
System.setProperty("https.proxyPort", "<proxy_port>");
System.setProperty("socksProxyHost", "<proxy_url>");
System.setProperty("socksProxyPort", "<proxy_port>");
URI uri = new URI("https://<hidden_server_url>");
try (InputStream stream = uri.toURL().openStream()){
String s = IOUtils.toString(stream, "UTF-8");
System.out.println(s != null);
} catch (IOException e) {
e.printStackTrace();
}
}
{code}
So java itself handles it correctly. What is more if I simply remove the
socksProxyHost and socksProxyPort settings, then Apache HttpClient connects
correctly to the hidden server. I don't think that having both HTTPS proxy
configuration and SOCKS is incorrect as according to Oracle documentation:
[https://docs.oracle.com/javase/8/docs/technotes/guides/net/proxies.html]
{code:java}
"Now, what happens when both a SOCKS proxy and a HTTP proxy are defined? Well
the rule is that settings for higher level protocols, like HTTP or FTP, take
precedence over SOCKS settings. So, in that particular case, when establishing
a HTTP connection, the SOCKS proxy settings will be ignored and the HTTP proxy
will be contacted. Let's look at an example:"
{code}
As in Apache HttpClient I'm using system properties (useSystemProperties) I
would expect that it is handled the same as Oracle does (the SOCK proxy should
be ignored). I also checked it for simple HTTP proxy (http.proxyHost,
http.proxyPort) and it acts the same (fails).
Could you please help me with this issue?
Best regards,
Mikolaj Broniszewski
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
