<syntaxhighlight lang="delphi"> type TProcessRequestEvent = procedure (Sender : TObject;
CliWSocket : TClientWSocket; var CmdBuf : PChar; var CmdLen : integer) of object;
property OnBeforeProcessRequest : TProcessRequestEvent; </syntaxhighlight>
Occurs before a client request is processed, just after it has been received.
The OnBeforeProcessRequest event is triggered just before anything is done with a request received from the client. This is the right place to add code for decryption/decompression. If needed, the event handler can allocate memory or resources and change the values on the arguments (passed by var) to fit the requirement. Allocated resources must be freed from the OnAfterProcessCommand.