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FriendFeedWinsock API Wrapper Classes
Creating multithreaded TCP/IP server - one like WWW server -:) for NT becomes frequent task novadays. MFC supplies several socket classes, but, from my experience, they are just unusable for this purpose. They fail all the time, and several 1000s (!) times slower than raw Winsock interface.
Facing the challenge, I wrote my own thin wrapper classes around socket API, together with template for server, and it was surprisingly simple.
The complete example project is in file RawSocketServerExample.ZIP.
Several notes for class usage:
Server's thread dispatcher for client-server environment.
Class CWizThreadDispatcher.
Uses pure virtual helper class CWizMultiThreadedWorker. Serves regular situation when requests come from many clients to the server.Dispatcher starts to serve the client in the separate thread and continues to wait for requests. The number of parallel threads is limited for effectiveness. The actual work (whatever it is) made in the class derived from CWizMultiThreadedWorker.
Files ThreadDispatcher.CPP and ThreadDispatcher.H .
Class CWizSyncSocket.
It's simple and somewhere limited encapsulation of the SOCKET handle for WinSock. It works in synchronous mode (which is suitable for multithreading program), but it can be made alertable (see CWizRawSocketListener).Derived class CWizReadWriteSocket implements read/write via socket.
Functions ReadString and WriteString implement character string I/O and translate UNICODE to ANSI if needed.
Files RawSocket.CPP and RawSocket.H .
Class CWizRawSocketListener
derived from CWizMultiThreadedWorker to work with CWizThreadDispatcher and it uses CWizSyncSocket. For real application you should derive your class from it and implement methodBOOL ReadWrite (CWizReadWriteSocket& socket).
Files RawSocketServerWorker.CPP and RawSocketServerWorker.H .
Example of the server and the client are at RawSocketServerExample.ZIP.
Note: the class was made alertable by installing hook function via WSASetBlockingHook() - see file RawSocketServerWorker.CPP. The same solution can be recommended for any use of CWizSyncSocket.
Article moved from Internet section on January 26 1999
Comments
Compile & Linking OK
Posted by Legacy on 03/13/2001 12:00amOriginally posted by: Choi Young Dae
Hi there.
I was installed 'MS Platform SDK'.
(VC++6 sp5 / Windows2000)
Thanks ... Poul A Costinski.
ReplyCan't run after complied with VC6.0.
Posted by Legacy on 10/09/2000 12:00amOriginally posted by: Lam
Replycl.exe error
Posted by Legacy on 08/18/2000 12:00amOriginally posted by: someOneNew
Here is the message from debug window. Please help!Deleting intermediate files and output files for project 'SC - Win32 Release'.
--------------------Configuration: SC - Win32 Release--------------------
Compiling...
StdAfx.cpp
Compiling...
main.cpp
C:\Dev\cpp\RawSocketServerExample\SocketClient\main.cpp(4) : fatal error C1083: Cannot open include file: '..\..\SocketServer\names.h': No such file or directory
RawSocket.cpp
RawSocketServerWorker.cpp
ThreadDispatcher.cpp
Generating Code...
Error executing cl.exe.
SC.exe - 1 error(s), 0 warning(s)
ReplyRead-Only file?
Posted by Legacy on 02/11/2000 12:00amOriginally posted by: chanm7
I am trying to comment out the two typedef lines, but it says it's a read-only project?
ReplyCorrect me if i'm wrong