一个实现同步MFC的lsp客户端，学习Winsock很用帮助-a synchronous MFC lsp client, the study is used to help Winsock

This code sample illustrates a Winsock 2 layered service provider (LSP). An LSP is a method of inserting a layer between the Winsock 2 API and applications. This is achieved by creating a DLL which implements the entire set of Winsock provider

this a very good document which describes Layered Service Provider architecture and relavant issue while implementing it.-this is a very good document which describes Layered Service Provider architecture and relavant issue while implementing it.