mirror of https://github.com/portainer/portainer
62 lines
1.1 KiB
Go
62 lines
1.1 KiB
Go
package websocket
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import (
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"io"
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"unicode/utf8"
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"github.com/gorilla/websocket"
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)
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const readerBufferSize = 2048
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func streamFromWebsocketToWriter(websocketConn *websocket.Conn, writer io.Writer, errorChan chan error) {
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for {
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_, in, err := websocketConn.ReadMessage()
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if err != nil {
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errorChan <- err
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break
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}
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_, err = writer.Write(in)
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if err != nil {
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errorChan <- err
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break
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}
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}
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}
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func streamFromReaderToWebsocket(websocketConn *websocket.Conn, reader io.Reader, errorChan chan error) {
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for {
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out := make([]byte, readerBufferSize)
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_, err := reader.Read(out)
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if err != nil {
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errorChan <- err
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break
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}
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processedOutput := validString(string(out[:]))
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err = websocketConn.WriteMessage(websocket.TextMessage, []byte(processedOutput))
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if err != nil {
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errorChan <- err
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break
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}
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}
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}
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func validString(s string) string {
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if !utf8.ValidString(s) {
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v := make([]rune, 0, len(s))
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for i, r := range s {
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if r == utf8.RuneError {
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_, size := utf8.DecodeRuneInString(s[i:])
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if size == 1 {
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continue
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}
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}
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v = append(v, r)
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}
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s = string(v)
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}
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return s
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}
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