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A Reusable Windows Socket Server Class With C++

Ever thought of writing your own Windows socket server class? In this article Len shows you exactly how to do just that, including details of what a socket server should do and example C++ code.

Author Info:
By: Len Holgate
Rating: 5 stars5 stars5 stars5 stars5 stars / 53
June 28, 2002
  1. · A Reusable Windows Socket Server Class With C++
  2. · What does a socket server need to do?
  3. · Asynchronous IO
  4. · Some example servers
  5. · Chunking the byte stream (Contd.)
  6. · Conclusion

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A Reusable Windows Socket Server Class With C++ - Conclusion
(Page 6 of 6 )

The classes presented here provide an easy way to develop scalable socket servers using IO completion and thread pooling in such a way that the user of the classes need not concern themselves with these low level issues. To create your own server simply derive from CSocketServer to create your listening socket, handle connection establishment and any of the other notifications that you require. Then derive from the WorkerThread class to provide the byte stream chunking and business logic. Running your server is as simple as this:

CSocketServer server(
"+OK POP3 server readyrn",
INADDR_ANY, // address to listen on
5001, // port to listen on
10, // max number of sockets to keep in the pool
10, // max number of buffers to keep in the pool
1024); // buffer size



Your code can then do whatever it likes and the socket server runs on its own threads. When you are finished, simply call:


And the socket server will shutdown.
In the next article we address the issue of moving the business logic out of the IO thread pool and into a thread pool of its own so that long operations don't block the IO threads.

The source was built using Visual Studio 6.0 SP5 and Visual Studio .Net. You need to have a version of the Microsoft Platform SDK installed.

All of the zip files mentioned can be found in the single zip file attached to this article, which is linked here.

Revision history
  • 21st May 2002 - Initial revision posted on www.jetbyte.com.
  • 27th May 2002 - Added pause/resume functionality to all servers and the server shutdown program. Use CSocket to protect from resource leaks when creating the listening socket. Refactored the Socket and CIOBuffer classes so that common list management code is now in CNodeList and common user data code is now in COpaqueUserData.
  • 29th May 2002 - Linting and general code cleaning
  • 18th June 2002 - Removed call to ReuseAddress() during the creation of the listening socket as it not required - Thanks to Alun Jones for pointing this out to me.

DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware.

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