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test.go
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test.go
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package main
import (
"fmt"
"net"
"net/netip"
"github.com/FH0/tproxy"
)
var (
tListener net.Listener
uListener *tproxy.UDPListener
)
func init() {
var err error
tListener, err = tproxy.ListenTCP("[::]:54321")
if err != nil {
panic(err)
}
uListener, err = tproxy.ListenUDP("[::]:54321")
if err != nil {
panic(err)
}
}
func testTCPNormal() {
go func() {
_, err := net.Dial("tcp", tListener.Addr().String())
if err != nil {
panic(err)
}
}()
conn, err := tListener.Accept()
if err != nil {
panic(err)
}
if conn.LocalAddr().(*net.TCPAddr).Port != tListener.Addr().(*net.TCPAddr).Port {
panic(fmt.Sprintf("%v %v\n", conn.LocalAddr(), tListener.Addr()))
}
}
func testUDPNormal() {
go func() {
conn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 54322})
if err != nil {
panic(err)
}
_, err = conn.WriteToUDPAddrPort([]byte("abcd"), netip.MustParseAddrPort("127.0.0.1:54321"))
if err != nil {
panic(err)
}
}()
buf := make([]byte, 100)
nread, saddr, daddr, err := uListener.ReadFromUDPAddrPort(buf)
if err != nil {
panic(err)
}
if saddr.Port() != 54322 ||
daddr.Port() != uint16(uListener.LocalAddr().(*net.UDPAddr).Port) ||
string(buf[:nread]) != "abcd" {
panic(fmt.Sprintf("%v %v %v\n", saddr.Port(), daddr.Port(), string(buf[:nread])))
}
}
func main() {
testTCPNormal()
testUDPNormal()
}