[ltsp] printer prints only once

[Michiel Bakker]

Binary package hint: ltsp-client

gutsy & feisty

I have a thin client which has a printer attached. So I put in lts.conf

[00:40:63:xx:xx:xx]
    PRINTER_0_DEVICE=/dev/lp0

and it works. Only after one page the printerdaemon stops. Starting /usr/sbin/jetpipe by hand gives(start & end loop put in pythonscript by me):

root@terminalserver:/etc# /usr/sbin/jetpipe /dev/lp0 9100
start loop
end loop ====>>> FIRST PAGE
start loop
Traceback (most recent call last):
  File "/usr/sbin/jetpipe", line 51, in <module>
    listen()
  File "/usr/sbin/jetpipe", line 36, in listen
    s.bind(('', int(sys.argv[2])))
  File "<string>", line 1, in bind
socket.error: (98, 'Address already in use')

putting a while loop in /opt/ltsp/i386/usr/lib/ltsp/start_printer worked (quick fix :));

    #
    # we 'exec' the print server, so that the print server will
    # replace the shell.
    #
    if [ -n "${PRT_OPTS}" ]; then
        logger -t lp_server "Started with: -n ${PORT} ${WO_OPT} -d ${DEVICE} -t \"${PRT_OPTS}\""
    else
        logger -t lp_server "Started with: -n ${PORT} ${WO_OPT} -d ${DEVICE}"
    fi
    while [ TRUE ]; do
        /usr/sbin/jetpipe ${DEVICE} ${PORT} >/dev/null 2>&1
    done

[Scott Balneaves (sbalneav)]

There was recently a fix I committed to jetpipe. Not sure if it's made it yet.

Here's the new jetpipe, replace your current one with this one, and back out your shell script loop part, see if this works.

import socket
import sys

# Print usage information
if len(sys.argv)!=3:
    print 'Usage: jetpipe <printerdevice> <port>'
    sys.exit(0)

# Wait for a job on <port> to forward to <printerdevice>
def listen(s):
    conn, addr = s.accept()
    while 1:
        data = conn.recv(1024)
        if not data: break
        p = open(sys.argv[1], 'wb')
        p.write(data)
        p.flush()
        p.close()
    conn.close()

# Rewspawn eternally
if __name__ == "__main__":
    jetpipe = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    jetpipe.bind(('', int(sys.argv[2])))
    jetpipe.listen(1)

    while 1:
        listen(jetpipe)

[Oliver Grawert (ogra)]

fixed in the 5.0.22 upload in gutsy

[Gerald Drouillard (gerald-drouillard)]

I tried the new jetpipe in a freshly installed 7.04 with all updates and it didn't work.
The start_printer change fixed it for me. Note that it appears the client terminal needs to reboot for the change to take effect.