How to Add a Listener to the Handshake Future of Netty's Client SSL Handler

[htutman]

Hi folks,

I'm working on a service that uses mTLS for outbound communication, and I need to log which certificate chain the HTTP client is actually using. In Netty, this should be achievable with something like:

sslHandler.handshakeFuture().addListener(future -> {
  if (future.isSuccess()) {
    logCertificates(sslHandler.engine().getSession().getLocalCertificates());
  }
});

However, in Micronaut, the sslHandler is initialized within ConnectionManager.java, and configured in the private method configureSslHandler, and I haven't found a way to hook into it.

Is there a recommended approach to achieve this in Micronaut's HTTP client?

Thanks.

[yawkat]

you can use a pipeline customizer

[htutman]

Thank you @yawkat!