syntax = "proto3"; package sms; option go_package = "./proto;sms"; service Sms { rpc Send(SendRequest) returns (SendResponse) {} } // Send an SMS. message SendRequest { // who is the message from? The message will be suffixed with "Sent from " string from = 1; // the destination phone number including the international dialling code (e.g. +44) string to = 2; // the main body of the message to send string message = 3; } message SendResponse { // will return "ok" if successful string status = 1; // any additional info string info = 2; }