Java HttpClient - Post with file through Proxy

Question

I try calling an external website from my webapplication with a proxy. Furthermore and need to execute a POST Request at this external website.

I\'m using: tomcat7, org.

Answer 1

I can think of a few issues that could cause this:

• Are you sure your https proxy does not require authentication? In that case you would probably need to set the credentials in a context and execute the request using the context and the client.Check this example: http://www.the-swamp.info/blog/java-request-through-proxy/

• Since you are using an https proxy and requesting an https url (SSL/TLS endpoint security) you may have problems with certificate validation. Check this good explanation for https proxies: Pros and cons of using a Http proxy v/s https proxy?