Ferdinand Sousa wrote:
I am using sockets to transfer a file over LAN. There are 2 scripts, the
server opens a listens for connection and the client is run on another
machine. I always make sure the server is run first. The strange thing is
that if the the server script is double-clicked and executed (run in a
console with title %Python path%python.exe) the output file saved on the
server is truncated. It works just fine if you open the server script in
IDLE and then run it. The client script can be run in either way, it still
works. You could try using any arbitrary file to test this behaviour after
changing the file name in both the scripts.
A couple of things:
* Are you aware that there's no particular guarantee
that what's sent along a socket in one write will
be received in one read? There's a HOWTO here if
you're interested:
http://docs.python.org/dev/howto/sockets.html
* Also, unless this is an exercise for yourself in investigating
how sockets work, (in which case... read the docs :)), you might
consider that you're reinventing the wheel not a little. But
perhaps you knew that?
TJG
==========================================================
# file receiver
# work in progress
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
HOST = '192.168.1.17'
PORT = 31400
s.bind((HOST, PORT))
s.listen(3)
conn, addr = s.accept()
print 'conn at address',addr
conn.send('READY')
f = open('C:\\Documents and Settings\\USER\\Desktop\\test.pdf','wb')
fsize=int(conn.recv(8))
print 'File size',fsize
f.write(conn.recv(fsize))
f.close()
conn.close()
s.close()
raw_input('Press any key to exit')
===========================================================
# file sender !!!
# Work in progress
import socket, os
from stat import ST_SIZE
HOST = '192.168.1.17'
PORT = 31400 # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST,PORT))
if s.recv(5)!='READY':
raw_input('Unable to connect \n\n Press any key to exit ...')
s.close()
exit()
f=open('C:\\Documents and Settings\\USER\\Desktop\\t.pdf', 'rb')
fsize=os.stat(f.name)[ST_SIZE]
s.send(str(fsize))
s.send(f.read())
s.close()
f.close()
===========================================================
Thanks for reading!!
Best regards,
Ferdi
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