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// Copyright 2012, Google, Inc. All rights reserved.
// Copyright 2009-2011 Andreas Krennmair. All rights reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree.
package layers
import (
"testing"
"github.com/gopacket/gopacket"
)
var icmp6HopByHopData = []byte{
// Ethernet layer
0x33, 0x33, 0x00, 0x00, 0x00, 0x16, // destination
0x1e, 0xc3, 0xe3, 0xb7, 0xc4, 0xd5, // source
0x86, 0xdd, // type IPv6
// IPv6 layer
0x60, 0x00, 0x00, 0x00, // version; traffic class; flow label
0x00, 0x88, // payload length?
0x00, // Next Header
0x01, // Hop Limit
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // source
0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, // destination
// IPv6 Hop-by-hop option
0x3a, // Next Header - IPv6-ICMP
0x00, // Hdr Ext Len
0x05, 0x02, 0x00, 0x00, 0x01, 0x00, // Options and Padding
// ICMPv6 layer
0x8f, 0x00, // ICMP type 143, code 0
0x9e, 0xed, 0x00, 0x00, 0x00, 0x06, 0x03, 0x00,
0x00, 0x00, 0xff, 0x02, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0xb7,
0xc4, 0xd5, 0x03, 0x00, 0x00, 0x00, 0xff, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0xff, 0x00, 0x00, 0x00, 0x04, 0x00,
0x00, 0x00, 0xff, 0x02, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0x11,
0x00, 0x79, 0x04, 0x00, 0x00, 0x00, 0xff, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0xff, 0x00, 0x00, 0x01, 0x04, 0x00,
0x00, 0x00, 0xff, 0x05, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x02, 0x04, 0x00, 0x00, 0x00, 0xff, 0x02,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
}
func TestPacketICMPv6WithHopByHop(t *testing.T) {
var ethLayerResp Ethernet
var ipV6LayerResp IPv6
var icmpLayerResp ICMPv6
var payload gopacket.Payload
parser := gopacket.NewDecodingLayerParser(LayerTypeEthernet, ðLayerResp, &ipV6LayerResp, &icmpLayerResp, &payload)
parser.IgnoreUnsupported = true // avoid `No decoder for layer type ICMPv6RouterAdvertisement` error
respLayers := make([]gopacket.LayerType, 0)
err := parser.DecodeLayers(icmp6HopByHopData, &respLayers)
if err != nil {
t.Errorf("error decoding layers %s", err)
return
}
expectedType := uint8(icmp6HopByHopData[62])
actualType := uint8(icmpLayerResp.TypeCode.Type())
if expectedType != actualType {
t.Errorf("expected ICMP layer's TypeCode to be %d but was %d", expectedType, actualType)
}
p := gopacket.NewPacket(icmp6HopByHopData, LinkTypeEthernet, gopacket.Default)
if p.ErrorLayer() != nil {
t.Error("Failed to decode packet:", p.ErrorLayer().Error())
}
checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv6, LayerTypeIPv6HopByHop, LayerTypeICMPv6}, t)
// See https://github.com/google/gopacket/issues/517
// checkSerialization(p, t)
}
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