This directory contains code licensed under the Apache License, Version 2.0.
The grpc-servlet-jakarta directory is from grpc/grpc-java#8596, a pull request to add a Java Servlet based transport. This version only supports Jakarta Servlets, and is copied from the generated sources created by that pull request, to best support the newest versions of Jetty. There is also one small change to allow the ServletAdapter to expose internal details to other transports, like grpc-servlet-web or grpc-servlet-websocket, to allow avoiding using an external proxy.
The grpc-servlet-websocket-jakarta project is new, not yet submitted to grpc-java for discussion or review. In short, it is a grpc-java transport, which uses one websocket per stream based on the https://github.com/improbable-eng/grpc-web/ client/proxy implementation. This enables a browser-based client to connect to a bidirectional binary stream without SSL or an intermediate proxy.
There will be another project here soon, for a grpc-web implementation, allowing a browser-based client to connect to server-streaming or unary calls with text or binary payloads, without an intermediate proxy. This will require SSL to use http2, and, until browsers support it, will not be able to handle any form of client streaming.