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Re: Lightwight socket IO wrapper

References (1 earlier) <20150921062713.GA77399@cskk.homeip.net> <mailman.23.1442822248.28679.python-list@python.org> <876134p5hw.fsf@elektro.pacujo.net> <mailman.24.1442822846.28679.python-list@python.org> <871tdsp3ox.fsf@elektro.pacujo.net>
Date 2015-09-21 18:45 +1000
Subject Re: Lightwight socket IO wrapper
From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.25.1442825151.28679.python-list@python.org> (permalink)

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On Mon, Sep 21, 2015 at 6:38 PM, Marko Rauhamaa <marko@pacujo.net> wrote:
> Chris Angelico <rosuav@gmail.com>:
>
>> On Mon, Sep 21, 2015 at 5:59 PM, Marko Rauhamaa <marko@pacujo.net> wrote:
>>> You can read a full buffer even if you have a variable-length length
>>> encoding.
>>
>> Not sure what you mean there. Unless you can absolutely guarantee that
>> you didn't read too much, or can absolutely guarantee that your
>> buffering function will be the ONLY way anything reads from the
>> socket, buffering is a problem.
>
> Only one reader can read a socket safely at any given time so mutual
> exclusion is needed.
>
> If you read "too much," the excess can be put in the application's read
> buffer where it is available for whoever wants to process the next
> message.

Which works only if you have a single concept of "application's read
buffer". That means that you have only one place that can ever read
data. Imagine a

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Re: Lightwight socket IO wrapper Chris Angelico <rosuav@gmail.com> - 2015-09-21 17:57 +1000
  Re: Lightwight socket IO wrapper Marko Rauhamaa <marko@pacujo.net> - 2015-09-21 10:59 +0300
    Re: Lightwight socket IO wrapper Chris Angelico <rosuav@gmail.com> - 2015-09-21 18:07 +1000
      Re: Lightwight socket IO wrapper Marko Rauhamaa <marko@pacujo.net> - 2015-09-21 11:38 +0300
        Re: Lightwight socket IO wrapper Chris Angelico <rosuav@gmail.com> - 2015-09-21 18:45 +1000
          Re: Lightwight socket IO wrapper Marko Rauhamaa <marko@pacujo.net> - 2015-09-21 11:48 +0300
            Re: Lightwight socket IO wrapper Marko Rauhamaa <marko@pacujo.net> - 2015-09-21 11:49 +0300
        Re: Lightwight socket IO wrapper Chris Angelico <rosuav@gmail.com> - 2015-09-21 18:50 +1000
          Re: Lightwight socket IO wrapper Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-09-22 07:59 +0000

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