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dialer_test.go
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package scanner
import (
"bytes"
"net"
"strconv"
"testing"
"time"
"github.com/stretchr/testify/require"
)
func TestAddrPool(t *testing.T) {
// ipv4 GlobalUnicast
dialer, err := NewDialer([]string{"192.168.1.1-192.168.1.2"}, time.Second)
require.NoError(t, err)
expected := bytes.Buffer{}
for i := 1024; i < 65536; i++ {
expected.WriteString("192.168.1.1:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
expected.WriteString("192.168.1.2:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
}
// cycle
expected.WriteString("192.168.1.1:1024\n")
expected.WriteString("192.168.1.2:1024\n")
actual := bytes.Buffer{}
for i := 0; i < 2*(65536-1024+1); i++ {
actual.WriteString(dialer.ipv4GU.get().String() + "\n")
}
require.True(t, expected.String() == actual.String())
// ipv4 LinkLocalUnicast
dialer, err = NewDialer([]string{"169.254.1.1-169.254.1.2"}, time.Second)
require.NoError(t, err)
expected.Reset()
for i := 1024; i < 65536; i++ {
expected.WriteString("169.254.1.1:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
expected.WriteString("169.254.1.2:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
}
// cycle
expected.WriteString("169.254.1.1:1024\n")
expected.WriteString("169.254.1.2:1024\n")
actual.Reset()
for i := 0; i < 2*(65536-1024+1); i++ {
actual.WriteString(dialer.ipv4LLU.get().String() + "\n")
}
require.True(t, expected.String() == actual.String())
// ipv6 GlobalUnicast
dialer, err = NewDialer([]string{"240c::1-240c::2"}, time.Second)
require.NoError(t, err)
expected.Reset()
for i := 1024; i < 65536; i++ {
expected.WriteString("[240c::1]:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
expected.WriteString("[240c::2]:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
}
// cycle
expected.WriteString("[240c::1]:1024\n")
expected.WriteString("[240c::2]:1024\n")
actual.Reset()
for i := 0; i < 2*(65536-1024+1); i++ {
actual.WriteString(dialer.ipv6GU.get().String() + "\n")
}
require.True(t, expected.String() == actual.String())
// ipv6 LinkLocalUnicast
dialer, err = NewDialer([]string{"fe80::1-fe80::2"}, time.Second)
require.NoError(t, err)
expected.Reset()
for i := 1024; i < 65536; i++ {
expected.WriteString("[fe80::1]:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
expected.WriteString("[fe80::2]:")
expected.WriteString(strconv.Itoa(i))
expected.WriteString("\n")
}
// cycle
expected.WriteString("[fe80::1]:1024\n")
expected.WriteString("[fe80::2]:1024\n")
actual.Reset()
for i := 0; i < 2*(65536-1024+1); i++ {
actual.WriteString(dialer.ipv6LLU.get().String() + "\n")
}
require.True(t, expected.String() == actual.String())
}
func TestDialer_Dial(t *testing.T) {
iface, err := SelectInterface("")
require.NoError(t, err)
l := len(iface.IPNets)
localIPs := make([]string, l)
for i := 0; i < l; i++ {
localIPs[i] = iface.IPNets[i].IP.String()
}
dialer, err := NewDialer(localIPs, 5*time.Second)
require.NoError(t, err)
listener, err := net.Listen("tcp", ":0")
require.NoError(t, err)
defer func() { _ = listener.Close() }()
_, port, _ := net.SplitHostPort(listener.Addr().String())
// ipv4
_, err = dialer.Dial("tcp", "8.8.8.8:53")
require.NoError(t, err)
_, err = dialer.Dial("tcp", "8.8.4.4:53")
require.NoError(t, err)
_, err = dialer.Dial("tcp", "127.0.0.1:"+port)
require.NoError(t, err)
_, err = dialer.Dial("tcp", "169.254.1.1:66666")
require.Error(t, err)
_, err = dialer.Dial("tcp", "169.254.1.1:53")
require.Error(t, err)
// ipv6
_, err = dialer.Dial("tcp", "[2606:4700:4700::1111]:53")
require.NoError(t, err)
_, err = dialer.Dial("tcp", "[2606:4700:4700::1001]:53")
require.NoError(t, err)
_, err = dialer.Dial("tcp", "[::1]:"+port)
require.NoError(t, err)
_, err = dialer.Dial("tcp", "[fe80::1]:66666")
require.Error(t, err)
_, err = dialer.Dial("tcp", "[fe80::1]:53")
require.Error(t, err)
}