/*
Copyright (C) 2010 Srivats P.

This file is part of "Ostinato"

This is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

import "protocol.proto";

package OstProto;

// Icmp Protocol
message Icmp {

    enum Version {
        kIcmp4 = 4;
        kIcmp6 = 6;
    }

    optional Version icmp_version = 1 [default = kIcmp4];
    optional bool is_override_checksum = 2;

    optional uint32 type = 6 [default = 0x8];  // echo request
    optional uint32 code = 7; 
    optional uint32 checksum = 8;
    optional uint32 identifier = 9 [default = 1234];
    optional uint32 sequence = 10;
}

extend Protocol {
    optional Icmp icmp = 402;
}