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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
package tunnelstest
import (
"fmt"
"io"
"sync"
"time"
"github.com/gorilla/websocket"
)
type socketConn struct {
*websocket.Conn
reader io.Reader
writeMutex sync.Mutex
readMutex sync.Mutex
}
func newSocketConn(conn *websocket.Conn) *socketConn {
return &socketConn{Conn: conn}
}
func (s *socketConn) Read(b []byte) (int, error) {
s.readMutex.Lock()
defer s.readMutex.Unlock()
if s.reader == nil {
msgType, r, err := s.Conn.NextReader()
if err != nil {
return 0, fmt.Errorf("error getting next reader: %w", err)
}
if msgType != websocket.BinaryMessage {
return 0, fmt.Errorf("invalid message type")
}
s.reader = r
}
bytesRead, err := s.reader.Read(b)
if err != nil {
s.reader = nil
if err == io.EOF {
err = nil
}
}
return bytesRead, err
}
func (s *socketConn) Write(b []byte) (int, error) {
s.writeMutex.Lock()
defer s.writeMutex.Unlock()
w, err := s.Conn.NextWriter(websocket.BinaryMessage)
if err != nil {
return 0, fmt.Errorf("error getting next writer: %w", err)
}
n, err := w.Write(b)
if err != nil {
return 0, fmt.Errorf("error writing: %w", err)
}
if err := w.Close(); err != nil {
return 0, fmt.Errorf("error closing writer: %w", err)
}
return n, nil
}
func (s *socketConn) SetDeadline(deadline time.Time) error {
if err := s.Conn.SetReadDeadline(deadline); err != nil {
return err
}
return s.Conn.SetWriteDeadline(deadline)
}
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