The v1.0.3 release has a small bugfix and experimental support for forward proxies. Only users of InProcess transport in tests or users wanting to test the forward proxy support benefit from the update.
- Remove a usage of an executor which was just to avoid lock ordering issues. Now the work is done on the same thread, but after locks are released. This fixes non-determinism when "connecting" with the InProcess transport (#2444)
- Add experimental support for http forward proxies via CONNECT to both Netty and OkHttp transports. Proxy authentication is unsupported. To enable, use the
GRPC_PROXY_EXPenvironment variable and set to ahost:port-formatted string. Error handling is known to be weak when negotiating with the proxy; most proxy failures will result in a generic error. Errors after negotiation completes are unaffected.