mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-09 16:43:03 +00:00
112 lines
2.4 KiB
Go
112 lines
2.4 KiB
Go
package websocket
|
|
|
|
import (
|
|
"io"
|
|
"net"
|
|
"time"
|
|
|
|
"github.com/gorilla/websocket"
|
|
"github.com/xtls/xray-core/common/buf"
|
|
"github.com/xtls/xray-core/common/errors"
|
|
"github.com/xtls/xray-core/common/serial"
|
|
)
|
|
|
|
var _ buf.Writer = (*connection)(nil)
|
|
|
|
// connection is a wrapper for net.Conn over WebSocket connection.
|
|
type connection struct {
|
|
conn *websocket.Conn
|
|
reader io.Reader
|
|
remoteAddr net.Addr
|
|
}
|
|
|
|
func newConnection(conn *websocket.Conn, remoteAddr net.Addr, extraReader io.Reader) *connection {
|
|
return &connection{
|
|
conn: conn,
|
|
remoteAddr: remoteAddr,
|
|
reader: extraReader,
|
|
}
|
|
}
|
|
|
|
// Read implements net.Conn.Read()
|
|
func (c *connection) Read(b []byte) (int, error) {
|
|
for {
|
|
reader, err := c.getReader()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
nBytes, err := reader.Read(b)
|
|
if errors.Cause(err) == io.EOF {
|
|
c.reader = nil
|
|
continue
|
|
}
|
|
return nBytes, err
|
|
}
|
|
}
|
|
|
|
func (c *connection) getReader() (io.Reader, error) {
|
|
if c.reader != nil {
|
|
return c.reader, nil
|
|
}
|
|
|
|
_, reader, err := c.conn.NextReader()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
c.reader = reader
|
|
return reader, nil
|
|
}
|
|
|
|
// Write implements io.Writer.
|
|
func (c *connection) Write(b []byte) (int, error) {
|
|
if err := c.conn.WriteMessage(websocket.BinaryMessage, b); err != nil {
|
|
return 0, err
|
|
}
|
|
return len(b), nil
|
|
}
|
|
|
|
func (c *connection) WriteMultiBuffer(mb buf.MultiBuffer) error {
|
|
mb = buf.Compact(mb)
|
|
mb, err := buf.WriteMultiBuffer(c, mb)
|
|
buf.ReleaseMulti(mb)
|
|
return err
|
|
}
|
|
|
|
func (c *connection) Close() error {
|
|
var errors []interface{}
|
|
if err := c.conn.WriteControl(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""), time.Now().Add(time.Second*5)); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
if err := c.conn.Close(); err != nil {
|
|
errors = append(errors, err)
|
|
}
|
|
if len(errors) > 0 {
|
|
return newError("failed to close connection").Base(newError(serial.Concat(errors...)))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (c *connection) LocalAddr() net.Addr {
|
|
return c.conn.LocalAddr()
|
|
}
|
|
|
|
func (c *connection) RemoteAddr() net.Addr {
|
|
return c.remoteAddr
|
|
}
|
|
|
|
func (c *connection) SetDeadline(t time.Time) error {
|
|
if err := c.SetReadDeadline(t); err != nil {
|
|
return err
|
|
}
|
|
return c.SetWriteDeadline(t)
|
|
}
|
|
|
|
func (c *connection) SetReadDeadline(t time.Time) error {
|
|
return c.conn.SetReadDeadline(t)
|
|
}
|
|
|
|
func (c *connection) SetWriteDeadline(t time.Time) error {
|
|
return c.conn.SetWriteDeadline(t)
|
|
}
|