Midware TAppServer
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Main page -> Midware component reference -> TAppserver
Contents
Overview
unit | ApServer.pas |
TAppServer is the communication kernel for all MidWare application servers. This component handle all the communication work for the application server, keeping track of user connections and sessions. A complete application server is made of a TAppserver component, a TRequestBroker (Object Request Broker) component and a set of TServerObject descendent components.
Properties
Banner | The banner property is the text that is sent to the client when the connection has been established. Default value is 'Welcome to MidWare server'. | |
ClientCount | Gives the actual number of connected clients. | |
ClientCountLabel | If assigned, this property will be used by TAppServer component to display the number of client connected. | |
ClientTimeout | ClientTimeout gives the time in seconds before the server disconnect a client without activity. | |
ClientWSocket | ClientWSocket is a run-time read-only indexed property whose value is the reference to each connected client TClientWSocket component. | |
ConnectCount | ConnectCount gives the total number of connection received since server startup. | |
DisplayMemo | If assigned, this property will be used by TAppServer component to display messages during work. | |
Handle | The Handle property is the windows handle for the hidden window the component uses for internal messages | |
Options | Options are used by TAppServer to modify behaviour. | |
Port | The port property gives the port number or service name used by the server to listen for client connection. | |
RequestBroker | The server component receive client requests, data parameters and send replies to client. | |
RequestCount | RequestCount gives the total number of requests received since server startup. | |
SrvWSocket | SrvWSocket is the underlaying TWSocket component used to listen for for client connections. | |
Timeoutlnterval | The server periodically check for client timeout. |
Methods
DisconnectAll | Disconnect every connected client. Do not confuse with the Stop method. | |
Start | The start procedure will start the server. The server will accept new client connections. See also Stop. | |
Stop | The Stop procedure will stop the server which will no more accept new clients, but will not disconnect already connected clients. See also Start. |
Events
OnAfterProcessRequest | Occurs when a request has been processed. | |
OnAfterSendReply | Occurs just after a reply has been sent. | |
OnBeforeProcessRequest | Occurs before a client request is processed, just after it has been received. | |
OnBeforeSendReply | Occurs just before a reply is sent to the client. | |
OnClientConnected | Occurs when a client connect to the server. | |
OnClientClosed | Occurs when a client disconnect from the server. | |
OnClientCommand | Occurs when a client's request is received, and before it is processed. | |
OnClientTimeout | Occurs when a client is disconnected because of lack of activity. | |
OnClientBgException | Occurs when an exception is triggered in the background by client socket. | |
OnDisplay | Occurs when server need to display a message. | |
OnServerBgException | Occurs when an exception in server socket occurs in the background. |