Class: ConnectionDetails

ConnectionDetails

Bean object that contains the configuration settings needed to connect to a Lightstreamer Server.
The class constructor, its prototype and any other properties should never be used directly; the library will create ConnectionDetails instances when needed.
Note that all the settings are applied asynchronously; this means that if a CPU consuming task is performed right after the call, the effect of the setting will be delayed.

new ConnectionDetails()

Used by LightstreamerClient to provide a basic connection properties bean.
See:

Method Summary

getAdapterSet
Inquiry method that gets the name of the Adapter Set (which defines the Metadata Adapter and one or several Data Adapters) mounted on Lightstreamer Server that supply all the items used in this application.
getServerAddress
Inquiry method that gets the configured address of Lightstreamer Server.
getServerInstanceAddress
Inquiry method that gets the server address to be used to issue all requests related to the current session.
getServerSocketName
Inquiry method that gets the instance name of the Server which is serving the current session.
getSessionId
Inquiry method that gets the ID associated by the server to this client session.
getUser
Inquiry method that gets the username to be used for the authentication on Lightstreamer Server when initiating the push session.
setAdapterSet
Setter method that sets the name of the Adapter Set mounted on Lightstreamer Server to be used to handle all requests in the session.
setPassword
Setter method that sets the password to be used for the authentication on Lightstreamer Server when initiating the push session.
setServerAddress
Setter method that sets the address of Lightstreamer Server.
setUser
Setter method that sets the username to be used for the authentication on Lightstreamer Server when initiating the push session.

Method Detail

getAdapterSet() → {String}

Inquiry method that gets the name of the Adapter Set (which defines the Metadata Adapter and one or several Data Adapters) mounted on Lightstreamer Server that supply all the items used in this application.
See:
Returns:
the name of the Adapter Set; returns null if no name has been configured, so that the "DEFAULT" Adapter Set is used.
Type
String

getServerAddress() → {String}

Inquiry method that gets the configured address of Lightstreamer Server.
Returns:
the configured address of Lightstreamer Server.
Type
String

getServerInstanceAddress() → {String}

Inquiry method that gets the server address to be used to issue all requests related to the current session. In fact, when a Server cluster is in place, the Server address specified through ConnectionDetails#setServerAddress can identify various Server instances; in order to ensure that all requests related to a session are issued to the same Server instance, the Server can answer to the session opening request by providing an address which uniquely identifies its own instance. When this is the case, this address is returned by the method; otherwise, null is returned.
Note that the addresses will always have the http: or https: scheme. In case WebSockets are used, the specified scheme is internally converted to match the related WebSocket protocol (i.e. http becomes ws while https becomes wss).

Edition Note: Server Clustering is not supported when using Lightstreamer in Moderato edition.

Lifecycle: The method gives a meaningful answer only when a session is currently active.

Notification: A change to this setting will be notified through a call to ClientListener#onPropertyChange with argument "serverInstanceAddress" on any ClientListener listening to any LightstreamerClient sharing the same connection with the LightstreamerClient that received the setting from the server .

Returns:
address used to issue all requests related to the current session.
Type
String

getServerSocketName() → {String}

Inquiry method that gets the instance name of the Server which is serving the current session. To be more precise, each answering port configured on a Server instance (through a <http_server> or <https_server> element in the Server configuration file) can be given a different name; the name related to the port to which the session opening request has been issued is returned.
Note that in case of polling or in case rebind requests are needed, subsequent requests related to the same session may be issued to a port different than the one used for the first request; the names configured for those ports would not be reported. This, however, can only happen when a Server cluster is in place and particular configurations for the load balancer are used.

Edition Note: Server Clustering is not supported when using Lightstreamer in Moderato edition.

Lifecycle: The method gives a meaningful answer only when a session is currently active.

Notification: A change to this setting will be notified through a call to ClientListener#onPropertyChange with argument "serverSocketName" on any ClientListener listening to any LightstreamerClient sharing the same connection with the LightstreamerClient that received the setting from the server .

Returns:
name configured for the Server instance which is managing the current session.
Type
String

getSessionId() → {String}

Inquiry method that gets the ID associated by the server to this client session.

Lifecycle: The method gives a meaningful answer only when a session is currently active.

Notification: A change to this setting will be notified through a call to ClientListener#onPropertyChange with argument "sessionId" on any ClientListener listening to any LightstreamerClient sharing the same connection with the LightstreamerClient that received the setting from the server .

Returns:
ID assigned by the Server to this client session.
Type
String

getUser() → {String}

Inquiry method that gets the username to be used for the authentication on Lightstreamer Server when initiating the push session.
See:
Returns:
the username to be used for the authentication on Lightstreamer Server; returns null if no user name has been configured.
Type
String

setAdapterSet(adapterSet)

Setter method that sets the name of the Adapter Set mounted on Lightstreamer Server to be used to handle all requests in the session.
An Adapter Set defines the Metadata Adapter and one or several Data Adapters. It is configured on the server side through an "adapters.xml" file; the name is configured through the "id" attribute in the <adapters_conf> element.

Default value: The default Adapter Set, configured as "DEFAULT" on the Server.

Lifecycle: The Adapter Set name should be set on the LightstreamerClient#connectionDetails object before calling the LightstreamerClient#connect method. However, the value can be changed at any time: the supplied value will be used for the next time a new session is requested to the server.
This setting can also be specified in the LightstreamerClient constructor.

Notification: A change to this setting will be notified through a call to ClientListener#onPropertyChange with argument "adapterSet" on any ClientListener listening to any LightstreamerClient sharing the same connection with the LightstreamerClient owning the ConnectionDetails upon which the setter was called .

Parameters:
Name Type Description
adapterSet String The name of the Adapter Set to be used. A null value is equivalent to the "DEFAULT" name.

setPassword(password)

Setter method that sets the password to be used for the authentication on Lightstreamer Server when initiating the push session. The Metadata Adapter is responsible for checking the credentials (username and password).

Default value: If no password is supplied, no password information will be sent at session initiation. The Metadata Adapter, however, may still allow the session.

Lifecycle: The username should be set on the LightstreamerClient#connectionDetails object before calling the LightstreamerClient#connect method. However, the value can be changed at any time: the supplied value will be used for the next time a new session is requested to the server.
NOTE: The password string will be stored as a JavaScript variable. That is necessary in order to allow automatic reconnection/reauthentication for fail-over. For maximum security, avoid using an actual private password to authenticate on Lightstreamer Server; rather use a session-id originated by your web/application server, that can be checked by your Metadata Adapter.

Notification: A change to this setting will be notified through a call to ClientListener#onPropertyChange with argument "password" on any ClientListener listening to any LightstreamerClient sharing the same connection with the LightstreamerClient owning the ConnectionDetails upon which the setter was called .

Parameters:
Name Type Description
password String The password to be used for the authentication on Lightstreamer Server. The password can be null.
See:

setServerAddress(serverAddress)

Setter method that sets the address of Lightstreamer Server. Setting Lightstreamer Server address is not required when the front-end pages are supplied by Lightstreamer Server itself (although this scenario is advised only for demo purpose). On the other hand, the setting should be configured if the front-end pages are served by an external Web server or loaded directly from the file system or the library is not running inside a browser.
When the client application is downloaded from a web server, the configured server address should have the same protocol as the client page itself. If this requirement is not respected, the client, depending on the browser in use, may be unable to open a streaming connection and will try to resort to polling.
Note that the addresses specified must always have the http: or https: scheme. In case WebSockets are used, the specified scheme is internally converted to match the related WebSocket protocol (i.e. http becomes ws while https becomes wss).

Edition Note: HTTPS connections are not supported by the Server if it runs in Allegro edition.

Edition Note: HTTPS connections are not supported by the Server if it runs in Moderato edition.

Default value: the address of the server that supplies the library pages if any, null otherwise.

Lifecycle:This method can be called at any time. If called while connected, it will be applied when the next session creation request is issued.
This setting can also be specified in the LightstreamerClient constructor.

Notification: A change to this setting will be notified through a call to ClientListener#onPropertyChange with argument "serverAddress" on any ClientListener listening to any LightstreamerClient sharing the same connection with the LightstreamerClient owning the ConnectionDetails upon which the setter was called .

Parameters:
Name Type Description
serverAddress String The full address of Lightstreamer Server. A null value can also be used, to restore the default value. An IPv4 or IPv6 can also be used in place of a hostname, if compatible with the environment in use (see the notes in the summary of this documentation). Some examples of valid values include:
http://push.mycompany.com
http://push.mycompany.com:8080
http://79.125.7.252
http://[2001:0db8:85a3:0000:0000:8a2e:0370:7334]
http://[2001:0db8:85a3::8a2e:0370:7334]:8080
Throws:
if the given address is not valid.
Type
IllegalArgumentException

setUser(user)

Setter method that sets the username to be used for the authentication on Lightstreamer Server when initiating the push session. The Metadata Adapter is responsible for checking the credentials (username and password).

Default value: If no username is supplied, no user information will be sent at session initiation. The Metadata Adapter, however, may still allow the session.

Lifecycle: The username should be set on the LightstreamerClient#connectionDetails object before calling the LightstreamerClient#connect method. However, the value can be changed at any time: the supplied value will be used for the next time a new session is requested to the server.

Notification: A change to this setting will be notified through a call to ClientListener#onPropertyChange with argument "user" on any ClientListener listening to any LightstreamerClient sharing the same connection with the LightstreamerClient owning the ConnectionDetails upon which the setter was called .

Parameters:
Name Type Description
user String The username to be used for the authentication on Lightstreamer Server. The username can be null.
See: