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Re: [newbie] trying socket as a replacement for nc

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  Re: [newbie] trying socket as a replacement for nc Jean-Michel Pichavant <jeanmichel@sequans.com> - 2013-12-13 16:35 +0100
    Re: [newbie] trying socket as a replacement for nc Jean Dubois <jeandubois314@gmail.com> - 2013-12-14 05:33 -0800
      Re: [newbie] trying socket as a replacement for nc Dan Stromberg <drsalists@gmail.com> - 2013-12-14 17:03 -0800
        Re: [newbie] trying socket as a replacement for nc Jean Dubois <jeandubois314@gmail.com> - 2013-12-15 07:35 -0800
          Re: [newbie] trying socket as a replacement for nc Chris Angelico <rosuav@gmail.com> - 2013-12-16 02:50 +1100
          Re: [newbie] trying socket as a replacement for nc Dan Stromberg <drsalists@gmail.com> - 2013-12-15 13:14 -0800

#61825 — Re: [newbie] trying socket as a replacement for nc

----- 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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#61896

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

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#61924

On Sat, Dec 14, 2013 at 5:33 AM, Jean Dubois <jeandubois314@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.

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#61949

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@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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#61950

On Mon, Dec 16, 2013 at 2:35 AM, Jean Dubois <jeandubois314@gmail.com> wrote:
> 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?

Have a look in that directory. It seems to simply have a bufsock.py
which is the module to import.

That said, though, you may have to deal with dependencies. The source
code of bufsock.py references a python2x3 module (which Google tells
me is by the same author), so you may need to grab that, too.

ChrisA

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#61964

On Sun, Dec 15, 2013 at 7:35 AM, Jean Dubois <jeandubois314@gmail.com> wrote:

>> 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?

You can put the files (bufsock.py and python2x3.py) in your current
working directory - Python will import from your CWD.  I believe
python2x3.py should be checked out via an external reference since you
used svn.

You can put the files in your site-packages directory.

You can put the files in a directory like ~/lib, and then
sys.path.insert(0, os.path.expanduser('~/lib')) .

I probably should make it pip'able, but I don't think it's going to
happen today.

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