如何获得Tomcat（等）来接受HTTPS代理请求？

Question

I'm trying to create a proxy in Java which proxies HTTP and HTTPS URLs. (I'm using Tomcat 8.0.14. I have set up Tomcat to receive HTTPS connections on port 8443, although this shouldn't be necessary to use Tomcat as an HTTPS proxy. But either way I get the same behaviour.) I've got it working using HTTP, but when I use HTTPS, it seems that Tomcat just rejects the connection and doesn't even call my servlet.

To illustrate this, I've created an example "Hello World" servlet mapped to "/*" in my web.xml.

public class HelloWorldProxy extends HttpServlet {
    @Override
    public void service(ServletRequest req, ServletResponse res)
            throws ServletException, IOException {
        System.out.println("Hello, World! " + ((new Date()).toString()));
        super.service(req, res);
    }
}

I set "localhost:8080" as the proxy for HTTP and HTTPS requests in Firefox as a test. Behaviour:

• When I hit " http://www.bbc.co.uk/ ", I get "Hello, World! ...." in the console as expected.
• When I hit " https://github.com/ ", I don't get any console output.

Does anyone know why this is?

Answer 1

For me it so far not clear which part of the connection is not working. As far as I understood your setup looks like

client <---> my-tomcat-proxy <---> some webpage

If the https connection between the client and your tomcat does not work, you maybe need to extend you tomcat config xml with an SSL connector, see Apache Tomcat 6.0 SSL Configuration HOW-TO for more details.

I had the same problem that my tomcat did not reply to client-side https requests. My problem was that I did not configure the tomcat properly to accept https connections.