gRPC Proxy

gRPC Proxy is a library that provides a generic proxy implementation for gRPC services. It allows you to intercept and modify incoming gRPC requests and outgoing responses, enabling you to add cross-cutting concerns such as logging, authentication, authorization, and more.

Features

• Generic proxy implementation for gRPC services
• Intercepts incoming requests and outgoing responses
• Supports modifying requests and responses through proxy dispatchers
• Provides flexibility to add cross-cutting concerns to gRPC services
• Compatible with any gRPC service definition

Usage

To use gRPC Proxy, follow these steps:

1. Define your gRPC service interface.
2. Create a list of proxy dispatchers that implement the IProxyDispatcher<TRequest, TResponse> interface.
3. Instantiate the GenericGrpcProxy<TService, TRequest, TResponse> class.
4. Add your proxy dispatchers using the AddDispatchers method.
5. Use the Dispatch method of the proxy instance to handle incoming gRPC requests.

Here's an example of using the gRPC Proxy with a gRPC client:

// Create a gRPC channel and client
var channel = GrpcChannel.ForAddress("https://localhost:5001");
var client = new Greeter.GreeterClient(channel);

// Create a list of proxy dispatchers
var dispatchers = new List<IProxyDispatcher<Method<HelloRequest, HelloReply>, HelloReply>>();
// Add your custom proxy dispatchers to the list

// Instantiate the GenericGrpcProxy
var proxy = new GenericGrpcProxy<Greeter.GreeterClient, HelloRequest, HelloReply>();

// Add the proxy dispatchers to the proxy instance
proxy.AddDispatchers(dispatchers);

// Make a gRPC request through the proxy
var request = new HelloRequest { Name = "Alice" };
var reply = await proxy.Dispatch(Method<HelloRequest, HelloReply>.Create(call => client.SayHelloAsync(call.Request, call.Headers, call.CancellationToken)), request, context);

// Process the response
Console.WriteLine(reply.Message);

You can have a look web api sample for Client.