It DOES seem like only when the connection socket is closed via conn.close()
that the data is flushed and the 'waiting' ends. So with the earlier
suggestion that I open one file-obj for reading and one for writing, I still
cannot acheive two-way communication because I need to close the connection
for it to actually occur completely!
My client waits after the "done sending" line indefinitely. Weird.
A
On Mon, Mar 1, 2010 at 16:35, Arjun Chennu <arjun.che...@gmail.com> wrote:
> Thanks for the feedback.
>
> Opening a separate file-obj for writing and for reading is just what I've
> been trying, but I don't seem to get it to work. I'm new to python and I'm
> not sure if I'm missing the intricacy of some command. Please help:
>
> Here is my server snippet:
>
>
> (conn, addr) = sock1.accept() # connected socket
> print 'Client (localhost) port: ', addr[1]
>
> cf = conn.makefile('r',0) # file obj for reading
>
> lf = open('ccs.txt','w')
>
> for linenum, line in enumerate(cf): # iterate over socket
> lines
> lf.write(line)
> #sys.stdout.write(line)
> print len(line)
>
> cf.close()
>
> stat = 'wrote %s lines to file.\n' %(linenum+1)
> cff = conn.makefile('w',0) # file obj for writing
> cff.writelines(stat) # cff.write(stat) does not work
> either!!
> cff.close()
>
> lf.close()
> conn.close()
> print stat, "DONE!"
>
> And here is the client that I have for it: (sfp is the local file object i
> read from)
>
>
> for line in sfp.readlines():
> cf.write(line)
> print len(line)
>
> print 'done sending'
> cf.close() #writing ends here
>
> cff = s.makefile('r',0) # file obj for writing
> for line in cff.readlines():
> print line
>
> cff.close()
>
> sfp.close()
> s.close()
>
> The execution sends all the lines (and prints out the len(line) ) and then
> stays waiting. THen when I manually terminate the client script, the server
> script happily types the "DONE!" output.
>
> Where is this protocol hanging up? Help much appreciated, with a small
> explanation.
>
> Cheers,
> Arjun
>
>
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