class THttpServer: public TNamed

 constructor

 destructor
 delete all http engines and sniffer

 factory method to create different http engine
 At the moment two engine kinds are supported:
  civetweb (default) and fastcgi
 Examples:
   "civetweb:8090" or "http:8090" or ":8090" - creates civetweb web server with http port 8090
   "fastcgi:9000" - creates fastcgi server with port 9000
   "dabc:1237"   - create DABC server with port 1237 (only available with DABC installed)
   "dabc:master_host:port" - attach to DABC master, running on master_host:port, (only available with DABC installed)

 create timer which will invoke ProcessRequests() function periodically
 Timer is required to perform all actions in main ROOT thread
 Method arguments are the same as for TTimer constructor
 By default, sync timer with 100 ms period is created

 If milliSec == 0, no timer will be created.
 In this case application should regularly call ProcessRequests() method.

 verifies that request just file name
 File names typically contains prefix like "httpsys/" or "jsrootiosys/"
 If true, method returns real name of the file,
 which should be delivered to the client
 Method is thread safe and can be called from any thread

 Executes http request, specified in THttpCallArg structure
 Method can be called from any thread
 Actual execution will be done in main ROOT thread, where analysis code is running.

 Process requests, submitted for execution
 Regularly invoked by THttpTimer, when somewhere in the code
 gSystem->ProcessEvents() is called.
 User can call serv->ProcessRequests() directly, but only from main analysis thread.

 Process single http request
 Depending from requested path and filename different actions will be performed.
 In most cases information is provided by TRootSniffer class

 Register object in folders hierarchy

 See TRootSniffer::RegisterObject() for more details

 Unregister object in folders hierarchy

 See TRootSniffer::UnregisterObject() for more details

 these methods used to set http request arguments