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Thomas Heller
*nix forums Guru Wannabe
Joined: 23 Feb 2005
Posts: 179
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 Posted: Thu Feb 03, 2005 4:51 pm Post subject:
Re: Where is WSAEnumNetworkEvents???
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Dave Brueck <dave@pythonapocrypha.com> writes:
| Quote: | elbertlev@hotmail.com wrote:
I was trying to write an asyncronous TCP server for win32 using
WSAEventSelect (which lives if win32file). Such events require
WaitForMultipleObjects (which lives if win32event) and
WSAEnumNetworkEvents WHICH IS NOT EXPOSED. This makes WSAEventSelect
useless. Does somebody know how to add the WSAEnumNetworkEvents and
WSANetwotkEvents structure win32file?
Maybe I'm missing something?
You could both build the structures and call the functions in ctypes
(http://starship.python.net/crew/theller/ctypes/)
[untested code follows]
from ctypes import *
class WSANETWORKEVENTS(Structure):
_fields_ = [('lNetworkEvents', c_long),
('iErrorCode', c_int * 10) # 10 = FD_MAX_EVENTS
]
You'd access the API via windll.ws2_32.WSAEnumNetworkEvents, e.g.
networkEvents = WSANETWORKEVENTS()
i = windll.ws2_32.WSAEnumNetworkEvents(s, hEventObject, byref(networkEvents))
if i != 0:
# Handle an error
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Yes. And the day is not too far away (hopefully), that you'll be able to
generate the wrapper code automatically:
<snip>
c:\sf\ctypes\sandbox\tools\codegen>h2xml winsock2.h -o winsock2.xml -q
skipped #define SNDMSG ::SendMessage FunctionType
c:\sf\ctypes\sandbox\tools\codegen>xml2py winsock2.xml -q -w -d -s WSAEnumNetworkEvents
# generated by 'xml2py'
# flags 'winsock2.xml -w -d -s WSAEnumNetworkEvents'
from ctypes import *
from ctypes import decorators
class _WSANETWORKEVENTS(Structure):
# C:/PROGRA~1/MICROS~3.NET/Vc7/PLATFO~1/Include/winsock2.h 1041
pass
ws2_32 = CDLL('ws2_32')
@ decorators.stdcall(c_int, ws2_32, [c_uint, c_void_p, POINTER(_WSANETWORKEVENTS)])
def WSAEnumNetworkEvents(p1, p2, p3):
# C:/PROGRA~1/MICROS~3.NET/Vc7/PLATFO~1/Include/winsock2.h 2706
return WSAEnumNetworkEvents._api_(p1, p2, p3)
_WSANETWORKEVENTS._fields_ = [
# C:/PROGRA~1/MICROS~3.NET/Vc7/PLATFO~1/Include/winsock2.h 1041
('lNetworkEvents', c_long),
('iErrorCode', c_int * 10),
]
assert sizeof(_WSANETWORKEVENTS) == 44, sizeof(_WSANETWORKEVENTS)
assert alignment(_WSANETWORKEVENTS) == 4, alignment(_WSANETWORKEVENTS)
c:\sf\ctypes\sandbox\tools\codegen>
<snip/>
Thomas |
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Dave Brueck
*nix forums beginner
Joined: 23 Feb 2005
Posts: 49
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| Posted: Thu Feb 03, 2005 2:59 pm Post subject:
Re: Where is WSAEnumNetworkEvents???
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elbertlev@hotmail.com wrote:
| Quote: | I was trying to write an asyncronous TCP server for win32 using
WSAEventSelect (which lives if win32file). Such events require
WaitForMultipleObjects (which lives if win32event) and
WSAEnumNetworkEvents WHICH IS NOT EXPOSED. This makes WSAEventSelect
useless. Does somebody know how to add the WSAEnumNetworkEvents and
WSANetwotkEvents structure win32file?
Maybe I'm missing something?
|
You could both build the structures and call the functions in ctypes
(http://starship.python.net/crew/theller/ctypes/)
[untested code follows]
from ctypes import *
class WSANETWORKEVENTS(Structure):
_fields_ = [('lNetworkEvents', c_long),
('iErrorCode', c_int * 10) # 10 = FD_MAX_EVENTS
]
You'd access the API via windll.ws2_32.WSAEnumNetworkEvents, e.g.
networkEvents = WSANETWORKEVENTS()
i = windll.ws2_32.WSAEnumNetworkEvents(s, hEventObject, byref(networkEvents))
if i != 0:
# Handle an error
HTH,
Dave |
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Roger Upole
*nix forums Guru Wannabe
Joined: 24 Feb 2005
Posts: 139
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| Posted: Thu Feb 03, 2005 2:32 pm Post subject:
Re: Where is WSAEnumNetworkEvents???
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From a quick look, it wouldn't be too difficult to wrap this function.
Both the input arguments can be already be handled by Swig,
and the outputs would just be an int and a fixed size tuple of ints.
Roger
<elbertlev@hotmail.com> wrote in message
news:1107376894.420724.260230@c13g2000cwb.googlegroups.com...
| Quote: | I was trying to write an asyncronous TCP server for win32 using
WSAEventSelect (which lives if win32file). Such events require
WaitForMultipleObjects (which lives if win32event) and
WSAEnumNetworkEvents WHICH IS NOT EXPOSED. This makes WSAEventSelect
useless. Does somebody know how to add the WSAEnumNetworkEvents and
WSANetwotkEvents structure win32file?
Maybe I'm missing something?
|
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elbertlev@hotmail.com
*nix forums beginner
Joined: 02 Feb 2005
Posts: 16
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| Posted: Wed Feb 02, 2005 7:41 pm Post subject:
Where is WSAEnumNetworkEvents???
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|
I was trying to write an asyncronous TCP server for win32 using
WSAEventSelect (which lives if win32file). Such events require
WaitForMultipleObjects (which lives if win32event) and
WSAEnumNetworkEvents WHICH IS NOT EXPOSED. This makes WSAEventSelect
useless. Does somebody know how to add the WSAEnumNetworkEvents and
WSANetwotkEvents structure win32file?
Maybe I'm missing something? |
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