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Open Configuration (User) (G Dataflow)

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Last Modified: November 18, 2019

Initiates a SystemLink Server connection using HTTP or HTTPS. The function authenticates the connection with a valid username and password.

Programming Patterns
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server url

URL of the server where this node sends the web request.

URL Syntax

Part Definition Example
Scheme Protocol the web service uses. http://
Host Domain name or IP address of the service. localhost
Port HTTP port of the web service. If you don't specify a port, the web service uses the default port. 80

Use the following syntax to prompt a connection to the SystemLink Server: https://host:<port>.

Use the following syntax to prompt a connection to the SystemLink Cloud server: https://api.systemlinkcloud.com.

To host a web application on a SystemLink Server, leave the server url input empty.

Default: http://localhost:80

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username

Login username for the server.

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password

Login password for the server.

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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configuration

Connection to the server.

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Node Configuration for Hosting Your Web Application on SystemLink Server

When you host your web application on SystemLink Server, leave the server url, username, and password inputs of the Open Configuration (User) node empty. To minimize security vulnerabilities, SystemLink Server will use your LDAP or Windows user account credentials for authentication.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Supported in VIs that run in a web application

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