win32 service and sockets

[Tom Brown]

Hi,

I created a win32 service for XPPro called N4010ATestServi ce.py (see below).
The service runs as a particular user with administrative rights. It starts a
thread that creates a simple socket server (N4010ASocketSe rver.py -- also
below) that just waits for 20 character string. When I run the socket server
by itself the test client can connect to the server and send a 20 character
string just fine. When I run the service, the server will bind to the port
but the client cannot connect. I verified the server was listening on the
given port using netstat -an. The client eventually times out. Why isn't the
server accepting connections when run in a service?

Thanks,
Tom

N4010ATestServi ce.py:
---------------------
import win32serviceuti l
import win32service
import win32event
import N4010ASocketSer ver
from thread import start_new_threa d

class N4010ATestServi ce(win32service util.ServiceFra mework):
_svc_name_ = "N4010ATestServ ice"
_svc_display_na me_ = "N4010A Test Service"
def __init__(self, args):
win32serviceuti l.ServiceFramew ork.__init__(se lf, args)

def SvcDoRun(self):
start_new_threa d(N4010ASocketS erver.main, ())
N4010ASocketSer ver.waitfor()

def SvcStop(self):
# Before we do anything, tell the SCM we are starting the stop process.
self.ReportServ iceStatus(win32 service.SERVICE _STOP_PENDING)
N4010ASocketSer ver.stop()

if __name__ == '__main__':
win32serviceuti l.HandleCommand Line(N4010ATest Service)


N4010ASocketSer ver.py:
----------------------
from socket import socket
from select import select
from time import sleep
import win32evtlogutil

applicationName = 'N4010ASocketSe rver'
messageDll = 'C:\Python24\Li b\site-packages\win32\ pythonservice.e xe'
running = True
stopped = False

def registerWithEve ntViewer():
win32evtlogutil .AddSourceToReg istry(applicati onName, messageDll)

def stop():
import servicemanager
servicemanager. LogInfoMsg('sto pping')
global running
running = False

def waitfor():
while not stopped:
sleep(0.5)

def main():
import servicemanager
registerWithEve ntViewer()
servicemanager. LogInfoMsg('cre ating socket')
sock = socket()
servicemanager. LogInfoMsg('bin ding to port 48777')
sock.bind(('0.0 .0.0', 48777))
servicemanager. LogInfoMsg('lis tening')
sock.listen(5)
while running:
servicemanager. LogInfoMsg('Wai ting for connection.')
readyRead, readyWrite, inerror = select([sock], [], [], 0)
while (not readyRead) and running:
sleep(0.5)
readyRead, readyWrite, inerror = select([sock], [], [], 0)
if running:
conn, address = sock.accept()
msg = conn.recv(20)
servicemanager. LogInfoMsg('Rec vd msg: %s' % msg)
conn.close()
global stopped
stopped = True