Reading text lines from a socket
sandip at linux-delhi.org
Sun Feb 29 01:19:36 CET 2004
[Reposting to the general list too]
Lloyd Kvam wrote:
> Sockets deal with packetized data. The network protocols do not guarantee
> keeping the data in line oriented chunks - even if the data starts out
> that way.
> You need to deal with extracting lines from chunks. So long as the
> connection is
> working properly, this is easy. The challenge occurs when the remainder
> of a line
> never gets delivered. The best strategy depends upon the details of
> what you are
I understand that. In Python using sockets is like using sockets in C.
However, I was looking for a python equivalent of the perl idiom of
opening a socket and getting a file handle ... and then reading this
file handle as any other line oriented file using $socket->readline
I am trying to write a simple Netcraft style script which tries the HEAD
method on a webserver and reads the Server: header from the response. I
would not like to use urllib, because even a call to something like
urllib.info() reads in the complete webpage on an open().
Even if this particular problem could be done elegantly, I would be
interested to know the answer to my original question because the
feature of reading a line at a time from a socket will help me in a lot
of other places in the future.
sandip (at) puroga.com
Puroga Technologies Pvt. Ltd.
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