// copy everything from the pty master to the websocket
// using base64 encoding for now due to limitations in term.js
func sendPtyOutputToConnection(conn *websocket.Conn, reader io.ReadCloser, finalizer *ReadWriteRoutingFinalizer) {
defer closeConn(conn, finalizer)
buf := make([]byte, 8192)
var buffer bytes.Buffer
for {
n, err := reader.Read(buf)
if err != nil {
if !isNormalPtyError(err) {
log.Printf("Failed to read from pty: %s", err)
}
return
}
i, err := normalizeBuffer(&buffer, buf, n)
if err != nil {
log.Printf("Cound't normalize byte buffer to UTF-8 sequence, due to an error: %s", err.Error())
return
}
if err = conn.WriteMessage(websocket.TextMessage, buffer.Bytes()); err != nil {
log.Printf("Failed to send websocket message: %s, due to occurred error %s", string(buffer.Bytes()), err.Error())
return
}
buffer.Reset()
if i < n {
buffer.Write(buf[i:n])
}
}
}
