CODEWITHSUNDEEP
javaapache-commons-httpclient
user496949
user496949

Reputation: 86075

Without changing code, how to force httpClient to use proxy by environment variables or JVM arguments

I found these system settings http.proxyHost and http.proxyPort are of no use to httpClient. How to force the httpClient to use proxy by environment variables or VM arguments or something like those without changing code?

Upvotes: 47

Views: 46908

Answers (5)

wangf
wangf

Reputation: 925

HTTP client (v 4.5.1 for my case) can use system proxy like this: 

HttpClient httpClient = HttpClientBuilder.create().useSystemProperties().build();
//or 
HttpClient httpClient = HttpClients.createSystem();

Upvotes: 24

Alastair McCormack
Alastair McCormack

Reputation: 27704

AFAIK, you can't manage this without code changes but you can get closer to native behaviour by using your own connection manager. See ProxySelector changes URL's scheme from https:// to socket://

Upvotes: 0

Krystian Nowak
Krystian Nowak

Reputation: 221

in https://issues.apache.org/jira/browse/HTTPCLIENT-1128

SystemDefaultHttpClient was added to ver. 4.2

see http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/impl/client/SystemDefaultHttpClient.html

Upvotes: 22

michal.kreuzman
michal.kreuzman

Reputation: 12390

you can force proxy to HttpClient by yourself with client.getHostConfiguration().setProxy(host, port) method. I usually create wrapper class around HttpClient and when initializing this class I setup proxy from whatever source (env. variables ...).

I used java.net.ProxySelector.setDefault(new MyProxySelector()) in situation where you can't set proxy directly on HttpClient. You have to implement your own ProxySelector class and method select makes proxy selection based on requested URI. You can make url->proxy mapping to configure particular URI address to required proxy or return one proxy for all requested URI globally.

As I can see in HttpClient source code, there's no other way how to configure proxy only setProxy method. I'm using commons-httpclient-3.1.

Upvotes: 6

Suraj Chandran
Suraj Chandran

Reputation: 24791

Does this help?

System.setProperty("https.proxyHost", proxy_host);
System.setProperty("http.proxyHost", proxy_host);
System.setProperty("https.proxyPort", proxy_port);
System.setProperty("http.proxyPort", proxy_port);

Or ofcourse you can pass the same properties via the commandline

Upvotes: -18

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