// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package math;

message DivArgs {
  int64 dividend = 1;
  int64 divisor = 2;
}

message DivReply {
  int64 quotient = 1;
  int64 remainder = 2;
}

message FibArgs {
  int64 limit = 1;
}

message Num {
  int64 num = 1;
}

message FibReply {
  int64 count = 1;
}

service Math {
  // Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
  // and remainder.
  rpc Div (DivArgs) returns (DivReply) {
  }

  // DivMany accepts an arbitrary number of division args from the client stream
  // and sends back the results in the reply stream.  The stream continues until
  // the client closes its end; the server does the same after sending all the
  // replies.  The stream ends immediately if either end aborts.
  rpc DivMany (stream DivArgs) returns (stream DivReply) {
  }

  // Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
  // generates up to limit numbers; otherwise it continues until the call is
  // canceled.  Unlike Fib above, Fib has no final FibReply.
  rpc Fib (FibArgs) returns (stream Num) {
  }

  // Sum sums a stream of numbers, returning the final result once the stream
  // is closed.
  rpc Sum (stream Num) returns (Num) {
  }
}