MATLAB: MATLAB to TELNET

Question

hello.

I have a third party program running alongside MATLAB. I wish to send it a message on a specific port.

I can do this through DOS by opening the command window manually and typing

"telnet myPC myPort"

where myPC is my computers name and myPort is a number eg 1000. I can see on the cmd window telnet has connected OK.

I then type

"STOP"

which is the message I wish to send my third party program and I can see in the command window the program stops. great.

When I try and do this in MATLAB i type:

[~, pcName] = system('hostname'); 
system(['telnet ' pcName ' myPort'])
pause(10); %as connection takes a moment or two
system('STOP')

However, this doesnt work as the connection isnt made and "-1" is returned when I try and telnet.

Any ideas?

(running MATLAB 2010B, win7, 64bit).

thanks!

Answer 1

<http://code.google.com/p/ni-gpib-matlab-wrappers/downloads/detail?name=ni-gpib-matlab-wrappers%20v0.5.zip&can=2&q=>

t = tcpip('123.456.789.123', 8080);
t.write('STOP')
t.close();

Hope this helps. By the way if you want to get a response use:

response = t.read();

(thanks Brent!)