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flow_test.go
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flow_test.go
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package types
import (
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"net"
"strings"
"testing"
)
func TestFlows(t *testing.T) {
ipFlow, _ := gopacket.FlowFromEndpoints(layers.NewIPEndpoint(net.IPv4(1, 2, 3, 4)), layers.NewIPEndpoint(net.IPv4(2, 3, 4, 5)))
tcpFlow, _ := gopacket.FlowFromEndpoints(layers.NewTCPPortEndpoint(layers.TCPPort(1)), layers.NewTCPPortEndpoint(layers.TCPPort(2)))
tcpIpFlow := NewTcpIpFlowFromFlows(ipFlow, tcpFlow)
ipFlow2, tcpFlow2 := tcpIpFlow.Flows()
if ipFlow2 != ipFlow || tcpFlow2 != tcpFlow {
t.Error("Flows method fail")
t.Fail()
}
}
func TestFlowString(t *testing.T) {
ipFlow, _ := gopacket.FlowFromEndpoints(layers.NewIPEndpoint(net.IPv4(1, 2, 3, 4)), layers.NewIPEndpoint(net.IPv4(2, 3, 4, 5)))
tcpFlow, _ := gopacket.FlowFromEndpoints(layers.NewTCPPortEndpoint(layers.TCPPort(1)), layers.NewTCPPortEndpoint(layers.TCPPort(2)))
tcpIpFlow := NewTcpIpFlowFromFlows(ipFlow, tcpFlow)
if !strings.EqualFold("1.2.3.4:1-2.3.4.5:2", tcpIpFlow.String()) {
t.Error("TcpIpFlow.String() fail")
t.Fail()
}
}
func TestFlowEqual(t *testing.T) {
ipFlow1, _ := gopacket.FlowFromEndpoints(layers.NewIPEndpoint(net.IPv4(1, 2, 3, 4)), layers.NewIPEndpoint(net.IPv4(2, 3, 4, 5)))
tcpFlow1, _ := gopacket.FlowFromEndpoints(layers.NewTCPPortEndpoint(layers.TCPPort(1)), layers.NewTCPPortEndpoint(layers.TCPPort(2)))
flow1 := NewTcpIpFlowFromFlows(ipFlow1, tcpFlow1)
ipFlow2, _ := gopacket.FlowFromEndpoints(layers.NewIPEndpoint(net.IPv4(1, 2, 3, 4)), layers.NewIPEndpoint(net.IPv4(2, 3, 4, 5)))
tcpFlow2, _ := gopacket.FlowFromEndpoints(layers.NewTCPPortEndpoint(layers.TCPPort(1)), layers.NewTCPPortEndpoint(layers.TCPPort(2)))
flow2 := NewTcpIpFlowFromFlows(ipFlow2, tcpFlow2)
if !flow1.Equal(&flow2) {
t.Error("TcpIpFlow.Equal fail")
t.Fail()
}
ipFlow3, _ := gopacket.FlowFromEndpoints(layers.NewIPEndpoint(net.IPv4(8, 2, 3, 4)), layers.NewIPEndpoint(net.IPv4(2, 3, 4, 5)))
tcpFlow3, _ := gopacket.FlowFromEndpoints(layers.NewTCPPortEndpoint(layers.TCPPort(1)), layers.NewTCPPortEndpoint(layers.TCPPort(2)))
flow3 := NewTcpIpFlowFromFlows(ipFlow3, tcpFlow3)
if flow1.Equal(&flow3) {
t.Error("TcpIpFlow.Equal fail")
t.Fail()
}
}
func TestNewTcpIpFlowFromPacket(t *testing.T) {
buf := gopacket.NewSerializeBuffer()
opts := gopacket.SerializeOptions{
FixLengths: true,
ComputeChecksums: true,
}
ip := layers.IPv4{
SrcIP: net.IP{1, 2, 3, 4},
DstIP: net.IP{2, 3, 4, 5},
Version: 4,
TTL: 64,
Protocol: layers.IPProtocolTCP,
}
tcp := layers.TCP{
SYN: true,
SrcPort: 1,
DstPort: 2,
Seq: 123,
BaseLayer: layers.BaseLayer{Payload: []byte{1, 2, 3}},
}
tcp.SetNetworkLayerForChecksum(&ip)
gopacket.SerializeLayers(buf, opts, &ip, &tcp)
packetData := buf.Bytes()
flow1, err := NewTcpIpFlowFromPacket(packetData)
ipFlow2, _ := gopacket.FlowFromEndpoints(layers.NewIPEndpoint(net.IPv4(1, 2, 3, 4)), layers.NewIPEndpoint(net.IPv4(2, 3, 4, 5)))
tcpFlow2, _ := gopacket.FlowFromEndpoints(layers.NewTCPPortEndpoint(layers.TCPPort(1)), layers.NewTCPPortEndpoint(layers.TCPPort(2)))
flow2 := NewTcpIpFlowFromFlows(ipFlow2, tcpFlow2)
if err != nil && !flow2.Equal(flow1) {
t.Error("NewTcpIpFlowFromPacket fail")
t.Fail()
}
flow1, err = NewTcpIpFlowFromPacket([]byte{1, 2, 3, 4, 5, 6, 7})
if err == nil || !flow1.Equal(&TcpIpFlow{}) {
t.Error("NewTcpIpFlowFromPacket fail")
t.Fail()
}
}
func FlowFromPacket() *TcpIpFlow {
buf := gopacket.NewSerializeBuffer()
opts := gopacket.SerializeOptions{
FixLengths: true,
ComputeChecksums: true,
}
ip := layers.IPv4{
SrcIP: net.IP{1, 2, 3, 4},
DstIP: net.IP{2, 3, 4, 5},
Version: 4,
TTL: 64,
Protocol: layers.IPProtocolTCP,
}
tcp := layers.TCP{
SYN: true,
SrcPort: 1,
DstPort: 2,
Seq: 123,
BaseLayer: layers.BaseLayer{Payload: []byte{1, 2, 3}},
}
tcp.SetNetworkLayerForChecksum(&ip)
gopacket.SerializeLayers(buf, opts, &ip, &tcp)
packetData := buf.Bytes()
flow, _ := NewTcpIpFlowFromPacket(packetData)
return flow
}
func TestHashedTcpIpv4Flow(t *testing.T) {
tcpIpFlow := FlowFromPacket()
hash1 := NewHashedTcpIpv4Flow(tcpIpFlow)
f := tcpIpFlow.Reverse()
hash2 := NewHashedTcpIpv4Flow(&f)
if hash1 != hash2 {
t.Error("hash values must be equal after sorting!")
t.Fail()
}
}
func TestHashedTcpIpv6Flow(t *testing.T) {
tcpIpFlow := FlowFromPacket()
hash1 := NewHashedTcpIpv6Flow(tcpIpFlow)
f := tcpIpFlow.Reverse()
hash2 := NewHashedTcpIpv6Flow(&f)
if hash1 != hash2 {
t.Error("hash values must be equal after sorting!")
t.Fail()
}
}