v0.5.0

Conduit v0.5.0 introduces a new, experimental feature that automatically
enables Transport Layer Security between Conduit proxies to secure
application traffic. It also adds support for HTTP protocol upgrades, so
applications that use WebSockets can now benefit from Conduit.

• Security
  • New conduit install --tls=optional enables automatic, opportunistic
    TLS. See the docs for more info.
• Production Readiness
  • The proxy now transparently supports HTTP protocol upgrades to support, for
    instance, WebSockets.
  • The proxy now seamlessly forwards HTTP CONNECT streams.
  • Controller services are now configured with liveness and readiness probes.
• User Interface
  • conduit stat now supports a virtual authority resource that aggregates
    traffic by the :authority (or Host) header of an HTTP request.
  • dashboard, stat, and tap have been updated to describe TLS state for
    traffic.
  • conduit tap now has more detailed information, including the direction of
    each message (outbound or inbound).
  • conduit stat now more-accurately records histograms for low-latency services.
  • conduit dashboard now includes error messages when a Conduit-enabled pod fails.
• Internals
  • Prometheus has been upgraded to v2.3.1.
  • A potential live-lock has been fixed in HTTP/2 servers.
  • conduit tap could crash due to a null-pointer access. This has been fixed.