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ssu.go
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ssu.go
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package main
import (
"bytes"
"log"
"net"
"strconv"
"github.com/ginuerzh/gosocks5"
ss "github.com/shadowsocks/shadowsocks-go/shadowsocks"
)
func main() {
ssuClient()
}
func ssuClient() {
addr, err := net.ResolveUDPAddr("udp", ":18338")
if err != nil {
log.Fatal(err)
}
laddr, _ := net.ResolveUDPAddr("udp", ":10800")
conn, err := net.ListenUDP("udp", laddr)
if err != nil {
log.Fatal(err)
}
cp, err := ss.NewCipher("chacha20", "123456")
if err != nil {
log.Fatal(err)
}
cc := ss.NewSecurePacketConn(conn, cp, false)
raddr, _ := net.ResolveUDPAddr("udp", ":8080")
msg := []byte(`abcdefghijklmnopqrstuvwxyz`)
dgram := gosocks5.NewUDPDatagram(gosocks5.NewUDPHeader(0, 0, toSocksAddr(raddr)), msg)
buf := bytes.Buffer{}
dgram.Write(&buf)
for {
log.Printf("%# x", buf.Bytes()[3:])
if _, err := cc.WriteTo(buf.Bytes()[3:], addr); err != nil {
log.Fatal(err)
}
b := make([]byte, 1024)
n, adr, err := cc.ReadFrom(b)
if err != nil {
log.Fatal(err)
}
log.Printf("%s: %# x", adr, b[:n])
}
}
func toSocksAddr(addr net.Addr) *gosocks5.Addr {
host := "0.0.0.0"
port := 0
if addr != nil {
h, p, _ := net.SplitHostPort(addr.String())
host = h
port, _ = strconv.Atoi(p)
}
return &gosocks5.Addr{
Type: gosocks5.AddrIPv4,
Host: host,
Port: uint16(port),
}
}