User
- Updated2025-05-23
- 2 minute(s) read
Initiates a SystemLink Server connection using HTTP or HTTPS. The function authenticates the connection with a valid username and password.
Inputs/Outputs

server url
URL of the server where this node sends the web request.
Default value: http://localhost:80
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>.
To host a web application on a SystemLink Server, leave the server url input empty.

username
Login username for the server.

password
Login password for the server.

error in
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Default value: No error

configuration
Connection to the server.

error out
Error information.
The node produces this output according to standard error behavior.
Programming Patterns
- Transferring Data Using Tags
- Sending Messages Between Systems
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.