Hi Daniel
This is handled in TelnetClient::_connectAction(). The output stream is
wrapped in a ToNetASCIIOutputStream, which replaces all \n with \r\n. A
quick fix for your serial blackbox system may (I havent tried this) be
to replace the line
__output = new ToNetASCIIOutputStream(new TelnetOutputStream(this));
with
__output = new BufferedOutputStream(new TelnetOutputStream(this));
protected void _connectAction_() throws IOException
{
super._connectAction_();
InputStream input;
TelnetInputStream tmp;
if (FromNetASCIIInputStream.isConversionRequired())
input = new FromNetASCIIInputStream(_input_);
else
input = _input_;
tmp = new TelnetInputStream(input, this, readerThread);
if(readerThread)
{
tmp._start();
}
.....
__input = new BufferedInputStream(tmp);
__output = new ToNetASCIIOutputStream(new TelnetOutputStream(this));
}
We could make this configurable in some way if necessary.
Rory
Daniel Wikman wrote:
Hi all!
I wonder if someone has seen this and know a "cure" for this behaviour. I wrote a program based
on the commons.net TelnetClient class. When using the program towards a Unix or Linux box
directly everything works fine, but when using telnet towards a serial blackbox, I always get an
extra newline added when writing commands (it seems like TelnetClient or the underlying stream
makes line terminations a la windows... The fun part is that if I make my own TelnetClient program
based on Java.util.ProcessBuilder it works just fine. I'd really like to make my program independent
of the "/usr/bin/telnet" to make it work on windows platform as well. Does anyone know what
option that controls this in TelnetClient?
BR
/Daniel
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