Function checkSerialization

layers/base_test.go:45–63

Checks that when a serialized version of p is decoded, p and the serialized version of p are the same. Does not work for packets where the order of options can change, like icmpv6 router advertisements, dhcpv6, etc.

(p gopacket.Packet, t *testing.T)

// Checks that when a serialized version of p is decoded, p and the serialized version of p are the same.
// Does not work for packets where the order of options can change, like icmpv6 router advertisements, dhcpv6, etc.
func checkSerialization(p gopacket.Packet, t *testing.T) {
	buf := gopacket.NewSerializeBuffer()
	opts := gopacket.SerializeOptions{
		ComputeChecksums: false,
		FixLengths:       false,
	}
	if err := gopacket.SerializePacket(buf, opts, p); err != nil {
		t.Error("Failed to encode packet:", err)
	}

	p2 := gopacket.NewPacket(buf.Bytes(), LinkTypeEthernet, gopacket.Default)
	if p2.ErrorLayer() != nil {
		t.Error("Failed to decode the re-encoded packet:", p2.ErrorLayer().Error())
	}

	if p2.Dump() != p.Dump() {
		t.Errorf("The decoded and the re-encoded packet are different!\nDecoded:\n%s\n Re-Encoded:\n%s", p.Dump(), p2.Dump())
	}
}