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Feature: support relay UDP traffic

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This commit is contained in:
yaling888
2022-05-22 05:32:15 +08:00
parent 622b10d34d
commit ce1014eae3
15 changed files with 414 additions and 86 deletions
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24
adapter/outbound/shadowsocksr.go
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@ -59,6 +59,22 @@ func (ssr *ShadowSocksR) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn,
return c, err
}
// StreamPacketConn implements C.ProxyAdapter
func (ssr *ShadowSocksR) StreamPacketConn(c net.Conn, _ *C.Metadata) (net.Conn, error) {
if !IsPacketConn(c) {
return c, fmt.Errorf("%s connect error: can not convert net.Conn to net.PacketConn", ssr.addr)
}
addr, err := resolveUDPAddr("udp", ssr.addr)
if err != nil {
return c, err
}
pc := ssr.cipher.PacketConn(c.(net.PacketConn))
pc = ssr.protocol.PacketConn(pc)
return WrapConn(&ssPacketConn{PacketConn: pc, rAddr: addr}), nil
}
// DialContext implements C.ProxyAdapter
func (ssr *ShadowSocksR) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
c, err := dialer.DialContext(ctx, "tcp", ssr.addr, ssr.Base.DialOptions(opts...)...)
@ -80,15 +96,13 @@ func (ssr *ShadowSocksR) ListenPacketContext(ctx context.Context, metadata *C.Me
return nil, err
}
addr, err := resolveUDPAddr("udp", ssr.addr)
c, err := ssr.StreamPacketConn(WrapConn(pc), metadata)
if err != nil {
pc.Close()
_ = pc.Close()
return nil, err
}
pc = ssr.cipher.PacketConn(pc)
pc = ssr.protocol.PacketConn(pc)
return newPacketConn(&ssPacketConn{PacketConn: pc, rAddr: addr}, ssr), nil
return NewPacketConn(c.(net.PacketConn), ssr), nil
}
func NewShadowSocksR(option ShadowSocksROption) (*ShadowSocksR, error) {