TOpenServerEx
Description
Opens a communication session to the T-Server specified by the parameters server_host_name and server_port, which are taken from Configuration Server. It designates the event-processing function that will be invoked each time an event from T-Server is detected.
Use the TOpenServerEx() function (rather than TOpenServer()) to reconnect after a T-Server session has been unexpectedly disconnected or if an application already knows the parameters server_host_name and server_port.
Parameters
| Name | Description |
|---|---|
| server_host_name | A pointer to the host name of T-Server to be contacted. |
| server_port | The port number. |
| dispatch_function | A pointer to the function that will be called when an event from T-Server arrives. |
| application_name | A pointer to the application name. |
| application_password | A pointer to the string containing the tenant name and the tenant password separated by a slash (/). |
| open_mode | Communication mode (synchronous or asynchronous). Refer to the type TOpenMode for information on the implications of using one mode versus the other. |
Return Values
> 0 - A local server handle to the specific T-Server; in other words, a unique identifier assigned by T-Library to the connection between a client and T-Server. The handle will be used subsequently to send requests to T-Server throughout this communication session.
< 0 - Error condition. Returned to the application if the communication session with the T-Server could not be established.