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ss: remove unused codes

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This commit is contained in:
nadoo 2017-09-08 12:35:49 +08:00
parent aab127d901
commit 9fef98fd5b
1 changed files with 4 additions and 77 deletions
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81
ss.go
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@ -5,11 +5,8 @@ import (
"log" "log"
"net" "net"
"strings" "strings"
"sync"
"time"
"github.com/shadowsocks/go-shadowsocks2/core" "github.com/shadowsocks/go-shadowsocks2/core"
"github.com/shadowsocks/go-shadowsocks2/socks"
) )
const udpBufSize = 65536 const udpBufSize = 65536
@ -40,12 +37,6 @@ func NewSS(addr, method, pass string, cDialer Dialer, sDialer Dialer) (*SS, erro
// ListenAndServe serves ss requests. // ListenAndServe serves ss requests.
func (s *SS) ListenAndServe() { func (s *SS) ListenAndServe() {
// go s.ListenAndServeUDP()
s.ListenAndServeTCP()
}
// ListenAndServeTCP serves tcp ss requests.
func (s *SS) ListenAndServeTCP() {
l, err := net.Listen("tcp", s.addr) l, err := net.Listen("tcp", s.addr)
if err != nil { if err != nil {
logf("proxy-ss failed to listen on %s: %v", s.addr, err) logf("proxy-ss failed to listen on %s: %v", s.addr, err)
@ -60,12 +51,12 @@ func (s *SS) ListenAndServeTCP() {
logf("proxy-ss failed to accept: %v", err) logf("proxy-ss failed to accept: %v", err)
continue continue
} }
go s.ServeTCP(c) go s.Serve(c)
} }
} }
// ServeTCP . // Serve .
func (s *SS) ServeTCP(c net.Conn) { func (s *SS) Serve(c net.Conn) {
defer c.Close() defer c.Close()
if c, ok := c.(*net.TCPConn); ok { if c, ok := c.(*net.TCPConn); ok {
@ -106,7 +97,7 @@ func (s *SS) ServeTCP(c net.Conn) {
c.Write(buf[:n]) c.Write(buf[:n])
logf("proxy-ss %s <-tcp-> %s <-> %s <-udp-> %s ", c.RemoteAddr(), c.LocalAddr(), rc.LocalAddr(), tgt) logf("proxy-ss %s <-tcp-> %s - %s <-udp-> %s ", c.RemoteAddr(), c.LocalAddr(), rc.LocalAddr(), tgt)
return return
} }
@ -130,70 +121,6 @@ func (s *SS) ServeTCP(c net.Conn) {
} }
// ListenAndServeUDP serves udp ss requests.
func (s *SS) ListenAndServeUDP() {
c, err := net.ListenPacket("udp", s.addr)
if err != nil {
logf("proxy-ss failed to listen on %s: %v", s.addr, err)
return
}
defer c.Close()
logf("proxy-ss listening UDP on %s", s.addr)
c = s.PacketConn(c)
var nm sync.Map
buf := make([]byte, udpBufSize)
for {
n, raddr, err := c.ReadFrom(buf)
if err != nil {
logf("UDP remote read error: %v", err)
continue
}
tgtAddr := socks.SplitAddr(buf[:n])
if tgtAddr == nil {
logf("failed to split target address from packet: %q", buf[:n])
continue
}
tgtUDPAddr, err := net.ResolveUDPAddr("udp", tgtAddr.String())
if err != nil {
logf("failed to resolve target UDP address: %v", err)
continue
}
payload := buf[len(tgtAddr):n]
var pc net.PacketConn
v, _ := nm.Load(raddr.String())
if v == nil {
pc, err = net.ListenPacket("udp", "")
if err != nil {
logf("UDP remote listen error: %v", err)
continue
}
nm.Store(raddr.String(), pc)
go func() {
timedCopy(c, raddr, pc, 5*time.Minute, true)
pc.Close()
nm.Delete(raddr.String())
}()
}
pc = pc.(net.PacketConn)
_, err = pc.WriteTo(payload, tgtUDPAddr) // accept only UDPAddr despite the signature
if err != nil {
logf("UDP remote write error: %v", err)
continue
}
}
}
// Dial connects to the address addr on the network net via the proxy. // Dial connects to the address addr on the network net via the proxy.
func (s *SS) Dial(network, addr string) (net.Conn, error) { func (s *SS) Dial(network, addr string) (net.Conn, error) {