JGit proxy configuration in code

Question

I am able to clone repo using clone command in JGit

Repo is http and of course it's failing to clone when I am behind proxy

Could you help me with code sample how to configure JGit with proxy in java

thanks!

Have you tried using the classical way of setting an HTTP proxy at the JVM level? — fge, Jun 04 '13 at 15:16
The question really was if it worked if you used the standard way. Your question does not really tell. — fge, Jun 04 '13 at 15:36

score 12 · Answer 1 · answered Jun 12 '13 at 17:30

JGit uses the standard ProxySelector mechanism for the Http connection. As of Today, the field org.eclipse.jgit.transport.TransportHttp.proxySelector used by the framework, is not overridable. It is configurable, though, customizing the JVM default proxy selector as in:

ProxySelector.setDefault(new ProxySelector() {
    final ProxySelector delegate = ProxySelector.getDefault();

    @Override
    public List<Proxy> select(URI uri) {
            // Filter the URIs to be proxied
        if (uri.toString().contains("github")
                && uri.toString().contains("https")) {
            return Arrays.asList(new Proxy(Type.HTTP, InetSocketAddress
                    .createUnresolved("localhost", 3128)));
        }
        if (uri.toString().contains("github")
                && uri.toString().contains("http")) {
            return Arrays.asList(new Proxy(Type.HTTP, InetSocketAddress
                    .createUnresolved("localhost", 3129)));
        }
            // revert to the default behaviour
        return delegate == null ? Arrays.asList(Proxy.NO_PROXY)
                : delegate.select(uri);
    }

    @Override
    public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
        if (uri == null || sa == null || ioe == null) {
            throw new IllegalArgumentException(
                    "Arguments can't be null.");
        }
    }
});

Are you using localhost as a placeholder where we should configure a value for the proxy address, or is it localhost? — wolfcall, Sep 04 '20 at 20:44
Yes, substitute localhost/3128 with the host and port of your proxy — Carlo Pellegrini, Sep 15 '20 at 14:33

Alix Lourme · Answer 2 · 2017-04-11T11:21:24.820

In complement of Carlo Pellegrini answer, if your proxy requires some authentication, you should configure an Authenticator, like (based on Authenticated HTTP proxy with Java question):

    Authenticator.setDefault(new Authenticator() {
        @Override
        public PasswordAuthentication getPasswordAuthentication() {
            // If proxy is non authenticated for some URLs, the requested URL is the endpoint (and not the proxy host)
            // In this case the authentication should not be the one of proxy ... so return null (and JGit CredentialsProvider will be used)
            if (super.getRequestingHost().equals("localhost")) {
                return new PasswordAuthentication("foo", "bar".toCharArray());
            }
            return null;
        }
    });

    ProxySelector.setDefault(new ProxySelector() {...});

JGit proxy configuration in code

2 Answers2