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v2fly/transport/internet/websocket/connection.go
Darien Raymond cea6e28634
refactor
2017-04-23 13:41:52 +02:00

106 lines
2.1 KiB
Go

package websocket
import (
"io"
"net"
"time"
"github.com/gorilla/websocket"
"v2ray.com/core/common/buf"
"v2ray.com/core/common/errors"
)
var (
_ buf.MultiBufferReader = (*connection)(nil)
_ buf.MultiBufferWriter = (*connection)(nil)
)
// connection is a wrapper for net.Conn over WebSocket connection.
type connection struct {
wsc *websocket.Conn
reader io.Reader
mergingReader buf.Reader
mergingWriter buf.Writer
}
// 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) ReadMultiBuffer() (buf.MultiBuffer, error) {
if c.mergingReader == nil {
c.mergingReader = buf.NewMergingReader(c)
}
return c.mergingReader.Read()
}
func (c *connection) getReader() (io.Reader, error) {
if c.reader != nil {
return c.reader, nil
}
_, reader, err := c.wsc.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.wsc.WriteMessage(websocket.BinaryMessage, b); err != nil {
return 0, err
}
return len(b), nil
}
func (c *connection) WriteMultiBuffer(mb buf.MultiBuffer) error {
if c.mergingWriter == nil {
c.mergingWriter = buf.NewMergingWriter(c)
}
return c.mergingWriter.Write(mb)
}
func (c *connection) Close() error {
c.wsc.WriteControl(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""), time.Now().Add(time.Second*5))
return c.wsc.Close()
}
func (c *connection) LocalAddr() net.Addr {
return c.wsc.LocalAddr()
}
func (c *connection) RemoteAddr() net.Addr {
return c.wsc.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.wsc.SetReadDeadline(t)
}
func (c *connection) SetWriteDeadline(t time.Time) error {
return c.wsc.SetWriteDeadline(t)
}