Listing 1. rlserver
#!/usr/bin/python
#
# rlserver - remote lpr server
#
# Thu Nov 8 11:06:32 PST 2001 Rory Krause
#
# Usage: rlserver portnumber
#
# Gets "printjob" data from standard in and fires
# up a server on port ARG 1. The server waits for
# a connection and then passes on the data to the
# connecting client program.
from socket import *
from os import remove
import sys, tempfile
data = sys.stdin.read()
filename = tempfile.mktemp()
f = open(filename, "w")
f.write(data)
f.close() # Close file to make sure all
# buffered data has been written
port = int(sys.argv[1]) # read port number from argv
s = socket(AF_INET, SOCK_STREAM)# Create TCP socket
s.bind(("",port)) # Bind to port
s.listen(1) # Listen, but allow
# only 1 connection
print "Listening on port: " + str(port)
client,addr = s.accept() # Accept a connection
print "Got a connection from ",addr
z = open(filename, "r")
while 1:
bunch = z.read(512)
if bunch:
sent = client.send(bunch)
print len(bunch)
z.seek(sent-len(bunch),1)
else:
z.close() # Close temp file
break # Let's get out of
# this while loop
client.close() # Close client
# connection
s.close() # Close the socket
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