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conn.go
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/
conn.go
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package remotedialer
import (
"io"
"github.com/gorilla/websocket"
)
func newConn(wsConn *websocket.Conn) io.ReadWriteCloser {
return &conn{
wsConn: wsConn,
}
}
type conn struct {
wsConn *websocket.Conn
currentReader io.Reader
}
func (c *conn) Read(b []byte) (n int, err error) {
if c.currentReader != nil {
cont, n, err := c.read(b)
if !cont || err != nil {
return n, err
}
}
for {
messageType, reader, err := c.wsConn.NextReader()
switch {
case err != nil:
return 0, err
case messageType != websocket.BinaryMessage:
if messageType == websocket.CloseMessage {
_ = c.wsConn.Close()
return 0, io.EOF
}
default:
c.currentReader = reader
cont, n, err := c.read(b)
if !cont || err != nil {
return n, err
}
}
}
}
func (c *conn) read(b []byte) (bool, int, error) {
n, err := c.currentReader.Read(b)
if err != nil && err == io.EOF {
c.currentReader = nil
if n == 0 {
return true, 0, nil
}
}
return false, n, err
}
func (c *conn) Write(b []byte) (int, error) {
err := c.wsConn.WriteMessage(websocket.BinaryMessage, b)
if err != nil {
return 0, err
}
return len(b), nil
}
func (c *conn) Close() error {
return c.wsConn.Close()
}