The framework in net/server.cls was written to ease the implementation of various internet protocol servers (smtp, pop3, ...).
Servers for specific a protocol have to derive from the baseclass server. The latter is then configured by
| What | Required | Meaning |
|---|---|---|
| server:port | + | Symbolic or numeric specification of the tcp port the server shall listen on for new connections. Examples: '1234', 'pop3'. |
| server:cmdMap | + | Defines the mapping between commands and the methods handling them. Upper and lower case will not be distinguished in command names. The methods will be called with 3 arguments: connection id, command to handle and the complete line as sent by the client. Use server:SetCmdMap to define it in a convenient way. |
| server:GreetPeer | - | Called after initialization of a new connection. Is responsible for sending a server and connection specific greeting message to the new client. |
| server:HandleUnknownCmd | - | Called if the received command was not found in the server:cmdMap. Gets the same arguments as a normal handler method. Should send a server specific error message to the client. The standard implementation just does a shutdown of the connection. |
| server:InitializeNewConnection | - | Defaults to an empty method. Is called to perform server specific initialization of a new connection. The general initialization is already done. One argument, the connection id. |
| server:CloseConnection | - | Defaults to an empty method. Is called to perform server specific cleanup of a connection. The general cleanup is already done. One argument, the connection id. |
An example of its usage can be found in net/pop3/server.cls
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