#!/usr/bin/perl
#
# Copyright (C) 1999,2000 Yokogawa Electric Corporation and
#                         YDC Corporation.
# All rights reserved.
# 
# Redistribution and use of this software in source and binary
# forms, with or without modification, are permitted provided that
# the following conditions and disclaimer are agreed and accepted
# by the user:
# 
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with
#    the distribution.
# 
# 3. Neither the names of the copyrighters, the name of the project
#    which is related to this software (hereinafter referred to as
#    "project") nor the names of the contributors may be used to
#    endorse or promote products derived from this software without
#    specific prior written permission.
# 
# 4. No merchantable use may be permitted without prior written
#    notification to the copyrighters.
# 
# 5. The copyrighters, the project and the contributors may prohibit
#    the use of this software at any time.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHTERS, THE PROJECT AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING
# BUT NOT LIMITED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.  IN NO EVENT SHALL THE
# COPYRIGHTERS, THE PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# $Id: FH_MixA2B1A1B2.seq,v 1.1.1.1 2000/10/31 22:39:51 sekiya Exp $
#
######################################################################
BEGIN {
	$V6evalTool::TestVersion = '$Name:  $';
}

use V6evalTool;

%pktdesc = (
	echo_request		=> 'Send Echo Request (Preparation)',
	echo_reply		=> 'Recv Echo Reply',
	ns			=> 'Recv Neighbor Solicitation',
	na			=> 'Send Neighbor Advertisement',
	echo_request_A_1st	=> 'Send Echo Request (1st fragment of packet A)',
	echo_request_A_2nd	=> 'Send Echo Request (2nd fragment of packet A)',
	echo_request_B_1st	=> 'Send Echo Request (1st fragment of packet B)',
	echo_request_B_2nd	=> 'Send Echo Request (2nd fragment of packet B)',
	echo_reply_A		=> 'Recv Echo Reply (packet A)',
	echo_reply_B		=> 'Recv Echo Reply (packet B)',
);

$IF = Link0;

vCapture($IF);

#----- preparation

vLogHTML('<B>Begin Preparation</B>');

vSend($IF, echo_request);

%ret = vRecv($IF, 5, 0, 0, ns, echo_reply);
if ($ret{status} != 0) {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}

if ($ret{recvFrame} eq 'ns') {
	vSend($IF, na);
	%ret = vRecv($IF, 5, 0, 0, echo_reply);
	if ($ret{status} != 0) {
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}
if ($ret{recvFrame} ne 'echo_reply') {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}

vSend($IF, na);

vLogHTML('<B>End Preparation</B>');

#----- main test

vSend($IF, echo_request_A_2nd);

vSend($IF, echo_request_B_1st);

vSend($IF, echo_request_A_1st);

vSend($IF, echo_request_B_2nd);

%ret = vRecv($IF, 5, 0, 0, echo_reply_A, echo_reply_B);
if ($ret{status} == 0 && $ret{recvFrame} eq 'echo_reply_A') {
	%ret = vRecv($IF, 5, 0, 0, echo_reply_B);
	if ($ret{status} == 0 && $ret{recvFrame} eq 'echo_reply_B') {
		vLogHTML('OK');
		exit $V6evalTool::exitPass;
	}
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	vSleep(65, "Discard Unexpected 'ICMP Time Exceeded' message (60+5 sec)");
	exit $V6evalTool::exitFail;
}
if ($ret{status} == 0 && $ret{recvFrame} eq 'echo_reply_B') {
	%ret = vRecv($IF, 5, 0, 0, echo_reply_A);
	if ($ret{status} == 0 && $ret{recvFrame} eq 'echo_reply_A') {
		vLogHTML('OK');
		exit $V6evalTool::exitPass;
	}
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	vSleep(65, "Discard Unexpected 'ICMP Time Exceeded' message (60+5 sec)");
	exit $V6evalTool::exitFail;
}

vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
vSleep(65, "Discard Unexpected 'ICMP Time Exceeded' message (60+5 sec)");
exit $V6evalTool::exitFail;

######################################################################
__END__


=head1 NAME

  FH_MixA2B1A1B2 - check Mixed 2 Fragment Reassembly (A2->B1->A1->B2)

=head1 TARGET

  Host and Router

=head1 SYNOPSIS

=begin html
<PRE>
  <A HREF="./FH_MixA2B1A1B2.seq">FH_MixA2B1A1B2.seq</A> [-tooloption ...] -pkt <A HREF="./Fragment.def">Fragment.def</A>
    -tooloption : v6eval tool option
</PRE>

=end html

=head1 INITIALIZATION

  1. Ping to Target (create Neighbor Cache Entries, if not exist)
  2. Override Neighbor Cache Entries

=head1 TEST PROCEDURE

  Tester                      Target
    |                           |
    |-------------------------->|
    |   Echo Request (2nd A)    |
    |                           |
    |                           |
    |-------------------------->|
    |   Echo Request (1st B)    |
    |                           |
    |                           |
    |-------------------------->|
    |   Echo Request (1st A)    |
    |                           |
    |                           |
    |-------------------------->|
    |   Echo Request (2nd B)    |
    |                           |
    |                           |
    |<--------------------------|
    |   Echo Reply (A or B)     |
    |                           |
    |                           |
    |<--------------------------|
    |   Echo Reply (rest)       |
    |                           |
    |                           |
    v                           v


  1. Send Echo Request (2nd fragment of packet A)
  2. Send Echo Request (1st fragment of packet B)
  3. Send Echo Request (1st fragment of packet A)
  4. Send Echo Request (2nd fragment of packet B)
  5. Receive Echo Reply (packet A)
  6. Receive Echo Reply (packet B)

=head1 JUDGEMENT

  PASS: Both Echo Reply Received

=head1 SEE ALSO

  perldoc V6evalTool

=cut