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// An integration test service that covers all the method signature permutations
// of unary/streaming requests/responses.

syntax = "proto3";

import "empty.proto";
import "messages.proto";

package grpc.testing;

// A simple service to test the various types of RPCs and experiment with
// performance with various types of payload.
service TestService {
  // One empty request followed by one empty response.
  rpc EmptyCall(grpc.testing.Empty) returns (grpc.testing.Empty);

  // One request followed by one response.
  rpc UnaryCall(SimpleRequest) returns (SimpleResponse);

  // One request followed by a sequence of responses (streamed download).
  // The server returns the payload with client desired type and sizes.
  rpc StreamingOutputCall(StreamingOutputCallRequest)
      returns (stream StreamingOutputCallResponse);

  // A sequence of requests followed by one response (streamed upload).
  // The server returns the aggregated size of client payload as the result.
  rpc StreamingInputCall(stream StreamingInputCallRequest)
      returns (StreamingInputCallResponse);

  // A sequence of requests with each request served by the server immediately.
  // As one request could lead to multiple responses, this interface
  // demonstrates the idea of full duplexing.
  rpc FullDuplexCall(stream StreamingOutputCallRequest)
      returns (stream StreamingOutputCallResponse);

  // A sequence of requests followed by a sequence of responses.
  // The server buffers all the client requests and then serves them in order. A
  // stream of responses are returned to the client when the server starts with
  // first request.
  rpc HalfDuplexCall(stream StreamingOutputCallRequest)
      returns (stream StreamingOutputCallResponse);
}