how to send an int over a socket

Jorgen Grahn · *nix forums Guru Wannabe Joined: 25 Feb 2005 Posts: 107

On 04 Feb 2005 19:24:29 -0800, Paul Rubin <> wrote:

Pierre Quentel · *nix forums beginner Joined: 20 Feb 2005 Posts: 36

Use string formatting :

msglen = '%16s' %len(testmessage)

will return a 16-byte string, beginning with spaces. Send it over your
connection and use int() to get the message length

Pierre

Paul Rubin · *nix forums Guru Joined: 28 Feb 2005 Posts: 1197

Tom Brown <brown@esteem.com> writes:

Tom Brown · *nix forums addict Joined: 21 Feb 2005 Posts: 57

On Friday 04 February 2005 18:27, Tom Brown wrote:

Paul Rubin · *nix forums Guru Joined: 28 Feb 2005 Posts: 1197

Tom Brown <brown@esteem.com> writes:

Tom Brown · *nix forums addict Joined: 21 Feb 2005 Posts: 57

Hi,

I have what seems to be a simple problem. But I can not for the life of me
find a way to send an integer over a socket. The send method will only accept
strings. Here is what I am trying to do:

testmessage = 'test message'
msglen = len(testmessage)
sock.send(msglen)
sock.send(testmessage)

Now, I know I can do this:

testmessage = 'test message'
sock.send('\xC') # send hard coded length of testmessage in hex in string
sock.send(testmessage)

However, in my actual program I will not know the length of testmessage in
advance. So how do I convert msglen into a suitable format for the send
method?

Thanks,
Tom

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