[newbie] trying socket as a replacement for nc

Jean Dubois jeandubois314 at gmail.com
Sun Dec 15 16:35:24 CET 2013


Op zondag 15 december 2013 02:03:14 UTC+1 schreef Dan Stromberg:
> On Sat, Dec 14, 2013 at 5:33 AM, Jean Dubois <jeandubois314 at gmail.com> wrote:
> > Op vrijdag 13 december 2013 16:35:31 UTC+1 schreef Jean-Michel Pichavant:
> >> ----- Original Message -----
> >> > I have an ethernet-rs232 adapter which allows me to connect to a
> >> > measurement instrument by means of netcat on a linux system.
> >> > e.g. entering nc 10.128.59.63 7000
> >> > allows me to enter e.g.
> >> > *IDN?
> >> > after which I get an identification string of the measurement
> >> > instrument back.
> >> > I thought I could accomplish the same using the python module
> >> > "socket"
> >> > and tried out the sample program below which doesn't work however:
> >> > #!/usr/bin/env python
> >> >
> >> > """
> >> > A simple echo client
> >> > """
> >> > import socket
> >> > host = '10.128.59.63'
> >> > port = 7000
> >> > size = 10
> >> > s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> >> > s.connect((host,port))
> >> > s.send('*IDN?')
> >> > data = s.recv(size)
> >> > s.close()
> >> > print 'Received:', data
> >> >
> >> > Can anyone here tell me how to do it properly?
> >> > thanks in advance
> >> > jean
> >> Such equipment often implements a telnet protocol. Have use try using the telnetlib module ?
> >> http://docs.python.org/2/library/telnetlib.html
> >> t = Telnet(host, port)
> >> t.write('*IDN?')
> >> print t.read_until('Whateverprompt')
> >> # you can use read_very_eager also
> >> JM
> > Thanks for the suggestion, I'll first wait for a response from Dan Stromberg concerning how to install his module, if he doesn't answer or if I'm still unsuccessfull then I'll try out your suggestion
> >
> > kind regards,
> > jean
> > --
> > https://mail.python.org/mailman/listinfo/python-list
> You can "svn checkout <url>".  You might try Sliksvn if you're on
> Windows, or if you're on Linux it's in synaptic or yum or whatever.
> You can "wget <url>".
> You can bring up the URL in a web browser and cut and paste.
I'm using Linux, I did the following:
svn checkout http://stromberg.dnsalias.org/svn/bufsock/
which resulted in a directory 'bufsock' being added to my home-directory, 
Do I have to run further commands on the files in this directory?
How do I make Python aware of the existence of this new module?

thanks in advance
jean 




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