On Wed, 25 Jun 2008 10:28:10 -0500, Larry Bates <[EMAIL PROTECTED]> wrote:
Cédric Lucantis wrote:
Le Tuesday 24 June 2008 08:59:40 Piyush Anonymous, vous avez écrit :
hi,
i wish to change the way the function definition at run time in a running
server. new function code which is to be executed is provided by a client
at different location.
i am getting it by reading a file and sending it using makefile() with
server/client connected using sockets.
how can make the lines received in a string array as new function
definition? or should i receive it in a different way?
is there any better way to do the entire thing?
One way is to transmit the code as a string and compile it on server-side
with the 'compile' builtin function. Another is to compile it on client-
side and transmit the resulting code object with the marshal module but
there are many restrictions on it (specially the fact that the client and
server will have to run the same python version) so carefully read the docs
first. I'd choose the first solution, eventually using the pickle module to
avoid encoding problems.
You may want to take a look at Twisted Python Perspective Broker. I believe
it does what you are looking for.
Twisted PB goes out of its way to *not* allow arbitrary code specified by
a peer to be executed, actually. :) It is intended to be used when you
cannot trust the network (a common scenario) but still want to perform
complex operations and pass complex data around.
Jean-Paul
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