v3.6.1

Fixes

• Heap-use-after-free when submitting work to another GrpcContext while inside of a GrpcContext::run/poll and then destructing that context. Example:

    agrpc::GrpcContext grpc_context;
    {
        agrpc::GrpcContext grpc_context2;
        asio::post(grpc_context2,
                   [&]
                   {
                       asio::post(grpc_context, [] {});
                   });
        grpc_context2.run();
    }
    grpc_context.run();

v3.6.0

Features

• Make gRPC callback API compatible with stdexec/unifex.

Fixes

• Use of Alarm{}.wait() in an asio parallel_group led to a crash when the alarm completed normally and asio tried to cancel it afterwards.
• Compilation error related to the new asio::inline_executor in Boost 1.90

Chore

• Update vcpkg. includes Boost 1.90 update.

v3.5.2

Fixes

• Cancellation of register_sender_rpc_handler will now correctly propagate to the senders produced by the rpc handler in more recent versions of stdexec

v3.5.1

Fixes

• Cancellation of register_sender_rpc_handler will now correctly propagate to the senders produced by the rpc handler

Chore

• Update vcpkg for Boost 1.89
• Update sonar-scanner

v3.5.0

Features

• New API that wraps gRPC reactors into Asio I/O objects. This should become the most performant API as soon as gRPC de-experimentalizes their EventEngine API and asio-grpc provides an Asio based implementation of it.
• Add support for stdexec R10

Fixes

• ManualResetEvent would sometimes not complete immediately when calling wait() even though the event is ready.
• Address some Wshadow warning

Chore

• Remove Ubuntu 20.04 actions thereby raising supported GCC version to 10 an Clang to 13

v3.4.3

Fixes

• GrpcContext::run_while(condition) should not go into waiting on the grpc::CompletionQueue if processing local work satisfied the condition.

Documentation

• Add a remark to GrpcContext::run_until and GrpcContext::run_while: The number of additional, completed operations that will be processed after the condition/deadline was met is unspecified.

Chore

• Update vcpkg, includes gRPC 1.71.0 and Boost 1.87 update.

v3.4.2

Fixes

• Compile cleanly with -Wundef

v3.4.1

Fixes

• Add inline to the definition of HealthCheckService::get_serving_status

v3.4.0

Features

• (experimental) RPC handlers passed to register_x functions may now have a member function called request_message_factory() whose return object will be used to create the initial request message in unary and server-streaming rpcs. This can be used to allocate the message in a protobuf arena (example) or reuse it between rpcs.
• Make Asio based register_x functions compatible with GrpcContext::run_completion_queue/poll_completion_queue()
• Cleanup asio-grpc.natvis and add support for Asio+libunifex/stdexec mixed builds.

Performance

• Changed GrpcContext::shutdown_ from atomic to regular bool. This bool is checked at the start and end of every asynchronous operation.

Documentation

• Add server example showing how to use an asio::io_context as the main execution context and a GrpcContext on a separate thread with GrpcContext::run_completion_queue().

v3.3.0

Features

• (experimental) Add agrpc::register_coroutine_rpc_handler, a generic version of agrpc::register_awaitable_rpc_handler that can be used to handle RPCs with all kinds of awaitable types like asio::experimental::coro and boost::cobalt::task. This can, for example, be used to implement async generator style rpc handler:

asio::experimental::coro<const example::v1::Response*, grpc::Status> 
handle_server_streaming_request(agrpc::GrpcExecutor executor, example::v1::Request& request)
{
    example::v1::Response response;
    response.set_integer(request.integer());
    agrpc::Alarm alarm{executor};
    for (size_t i{}; i != 5; ++i)
    {
        response.set_integer(response.integer() + 1);
        co_yield &response;
        co_await alarm.wait(std::chrono::system_clock::now() + std::chrono::seconds(1));
    }
    co_return grpc::Status::OK;
}

Fixes

• Fix compilation of health_check_service.hpp with recent gRPC versions by removing use of GPR_ASSERT macro.

Documentation

• Code snippets now have a copy button in the top right corner.
• Improve several links between classes/functions in the documentation.
• Document agrpc::DefaultServerRPCTraits.
• Fix empty documentation of agrpc::ClientRPC<GENERIC_STREAMING> and agrpc::ServerRPC<GENERIC>.

Chore

• Replace Clang 12 build with Clang 18.
• Update doxygen to 1.12.0 and doxygen-awesome to 2.3.4.
• Update vcpkg, includes Boost 1.86 update.