[newbie] trying socket as a replacement for nc

[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


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