scalable-server

Unlimited Scalable Server

Scalable Server

 
var Server = require('scalable-server');
 
var config = {
    daemon: {
        port: 8800,
        clients: [],
        servers: [],
        noEvents: false
    },
    test: false
};
var s = new Server(config);
 
// connect listeners 
s.on('connection.new',  function(event) { /* .. code .. */ });
s.on('connection.lost', function(event) { /* .. code .. */ });
 
s.init();
 
// connect to additional clients and servers 
// this can also be done from the config 
 
s.getDaemon().addClient( port );
s.getDaemon().addServer( address ); // example : ws://localhost:9000/ 
 

The options are given to the constructor

This is in the daemon property of the config object.

  • port Sets the server port on the entered number, the default is 8800
  • clients Adds a connection to a client, this parameter can be repeated when required. This only requires a port number
  • servers Adds a connection to a server, this parameter can be repeated when required. This requires an object with the following attributes
    • hostname The hostname to connect to
    • port The port to connect to
  • noEvents If true, this sets the event handling to message events only. This effectively disables the use of evt.* events.

clients is the shorthand version of servers where the hostname is always "localhost"

  • log This event is emitted every time a log line is executed, this can be used to handle logs in your own way, instead of outputting them to the console

  • message This event is emitted every time a message is received, this is only triggered once per message. The handler for this parameter has 2 parameters;

    • message The message object, this includes the message, user, hashcode and event-type.
    • connection The connection which has send this message.
  • evt.<eventcode> This type of event is send whenever the client or a connected server sends out a message with the event type set. Note: this will be triggered instead of the message event. This can be configured.

    Example:

    Client: { "user": "hank", "event":"request", "method":"sayHello", "params": {} }

    Server: self.emit('evt.request', event);

If you put the returnValue of the EventObject to false, the message will not be send to other servers, nor clients. This allows to respond to an event without alerting the flock.

  • connection.new This event is emitted when a new connection is established. The handler for this event has one parameter, which is the connection object itself.
  • connection.lost This event is emitted when a connection is lost. The handler for this event has one parameter, which is the connection object itself. Note: one can no longer use this object for sending messages. The connection has been terminated.
  • server.new This event is emitted when a new server-connection is established. The handler for this event has one parameter, which is the connection object itself.
  • server.lost This event is emitted when a server-connection is lost. The handler for this event has one parameter, which is the connection object itself. Note: one can no longer use this object for sending messages. The connection has been terminated.

TBD

 
Submodule: {
    server: null,     // Deamon 
    // ... 
    init:function(){} // Function 
}
 
 
Connection: {
    pool: [],                  // ConnectionPool[] 
    conn: null,                // Websocket 
    // ... 
    getIndexfunction() {},   // int 
    removefunction() {},     // void 
    sendfunction(message) {} // void 
}
 
 
ConnectionPool: {
    pool:[],                                      // Connection[] 
    // ... 
    getPoolfunction() {},                       // Connection[] 
    setPoolfunction(connections) {},            // void 
    addfunction(connection) {},                 // Connection 
    removefunction(index) {},                   // Connection 
    hasfunction(index) {}                       // boolean 
    indexfunction(connection) {},               // int 
    sendfunction(messageexcept_connection) {} // void 
]
 
 
EventObject: {
    event: "",         // String 
    returnValue: true, // boolean 
    // ... 
    message: "",       // String 
    connection: null   // Connection 
}