[commons-net] issue: FTP other HTTP with Proxy-Authorization fail

[Емельянов Юрий Владимирович]

see FTPHTTPClient.tunnelHandshake

current code is:
        if (proxyUsername != null && proxyPassword != null) {
            final String auth = proxyUsername + ":" + proxyPassword;
            final String header = "Proxy-Authorization: Basic " + 
Base64.getEncoder().encodeToString(auth.getBytes(charset));
            output.write(header.getBytes(charset));
        }
correct code is:

        if (proxyUsername != null && proxyPassword != null) {
            final String auth = proxyUsername + ":" + proxyPassword;
            final String header = "Proxy-Authorization: Basic " + 
Base64.getEncoder().encodeToString(auth.getBytes(charset));
            output.write(header.getBytes(charset));
*output.write(CRLF);*
        }