syntax = "proto3";

package test;

message EchoRequest {
    string message = 1;
}

service Test {
    rpc Echo(EchoRequest) returns (EchoRequest);
    rpc ServerStream(EchoRequest) returns (stream EchoRequest);
    rpc ClientStream(stream EchoRequest) returns (EchoRequest);
    rpc DuplexStream(stream EchoRequest) returns (stream EchoRequest);
}