Why CAsyncSocket doesn't work in Windows Service application?

[hankgao0703]

Hi,
I am developing a Windows service application, in which I use CAysncSocket class as a listenning socket to monitor requests from clients, but when I call CAsynSocket.Create(), the application crashes, Why?
my code is as follows:

....
AfxSocketInit();
....
CAsyncSocket socket;
socket.Create(2047); <===== application crashes here

by the way, I made a small console application to test and same error happens, but in a dialog based appication, it works, so CAysncSocket only can be used in standard windows application, Is that right?
If so, that's too bad, I just wonder if there is any other ways to communicate with clients that can be used in Windows service application?

thanks in advance

Hank Gao

 

[sirbeatsalot]

Yes I'm pretty sure CAsyncSocket can only be used by a standard Window application because it uses Windows Messages to notify the dialog of network events. Creating a listening socket as you did should work also. You might need to include the WS2_32.LIB files to your project.

You can use the app-wizard to include all Winsock initilizations and .LIB files for you .. just check the use &quot;Windows Sockets&quot; check box.

 

[xyz0000]

Hi.
I had the same problem with sockets and services. To solve it, I used a trick: when the time comes to use a socket I just run a sepparate application that can use sockets...

Hope to help...

 

[hankgao0703]

Thanks for you guy's reply, (but I don't what to use a sperate application to run socket)

To sirbeatsalot:
I don't quite understand your post, could you please give more details?

Thanks
Hank

 

[iknow]

You must use the MFC in a shared DLL

 

[hankgao0703]

Thanks, guys,

I tried to use CAsyncSocket in DLL, it still doesn't work, (I mean applicatin crashes when CAsyncSocket::Create is called). but if I don't use SCM(Service Control Manager) to start my service application, instead starts it directly, everything is just fine, Could anybody tell me the reason?


Thanks.