client / server framework

For a project we need a base client/server framework for TCP/IP and UDP communication in the form of messaging. The server needs to accept multiple connections simultaniously. The client should have a message looper class to receive and send messages to and from the server. Server services need to be able to communicate with other server instances (it then acts like a client). The messaging should be able to send over files (download) as well. We also need to class to download a file from a given location, to do HTTP communication. All work will be under NDA. The server needs to run on Linux (CentOS preferred), the client is cross-platform. We can provide the base classes for threading, locking and some other related classes/headers. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables): a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform c++