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 ToDo
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 1. put wait for keypress in Utilities
 4. check body operations with strings
 7. revise and use logger
 8. add one-way
 9. add keep-alive processing
 10. convert to use new StringUtilities and CodeUtilities
 11. Define virtual directory root for HttpServer
 12. Add non-HTTP processing serverProcs
 13. Make file reading shared mode in getProc
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 Done
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 2. add HttpClient.h with HttpClient class
 3. finish porting getMessage from HttpServer to HttpClient
    -- client isn't handling bodies correctly yet - see 6.
 5. work out way to insert message processing in HttpServer
    -- almost there, needs to be cleaned up and made easier to use
 6. move socket code into HttpClient and HttpServer core base class