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client.go
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client.go
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package uot
import (
"encoding/binary"
"io"
"net"
"github.com/MehranF123/sing/common"
"github.com/MehranF123/sing/common/buf"
M "github.com/MehranF123/sing/common/metadata"
)
type ClientConn struct {
net.Conn
}
func NewClientConn(conn net.Conn) *ClientConn {
return &ClientConn{conn}
}
func (c *ClientConn) ReadPacket(buffer *buf.Buffer) (M.Socksaddr, error) {
destination, err := AddrParser.ReadAddrPort(c)
if err != nil {
return M.Socksaddr{}, err
}
var length uint16
err = binary.Read(c, binary.BigEndian, &length)
if err != nil {
return M.Socksaddr{}, err
}
if buffer.FreeLen() < int(length) {
return M.Socksaddr{}, io.ErrShortBuffer
}
return destination, common.Error(buffer.ReadFullFrom(c, int(length)))
}
func (c *ClientConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
defer buffer.Release()
err := AddrParser.WriteAddrPort(c, destination)
if err != nil {
return err
}
err = binary.Write(c, binary.BigEndian, uint16(buffer.Len()))
if err != nil {
return err
}
return common.Error(c.Write(buffer.Bytes()))
}
func (c *ClientConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
addrPort, err := AddrParser.ReadAddrPort(c)
if err != nil {
return 0, nil, err
}
var length uint16
err = binary.Read(c, binary.BigEndian, &length)
if err != nil {
return 0, nil, err
}
if len(p) < int(length) {
return 0, nil, io.ErrShortBuffer
}
n, err = io.ReadFull(c, p[:length])
if err != nil {
return 0, nil, err
}
addr = addrPort.UDPAddr()
return
}
func (c *ClientConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
err = AddrParser.WriteAddrPort(c, M.SocksaddrFromNet(addr))
if err != nil {
return
}
err = binary.Write(c, binary.BigEndian, uint16(len(p)))
if err != nil {
return
}
return c.Write(p)
}