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RIO Developer Essentials Guide for Academia

"HTTP" tag

Diagram showing communication pathway between PC host and RT target

RT/host inter-target communication
RT guide PC guide

Transfer data, commands, and status between the RT target and a host system.

LabVIEW RT block diagram: Attempt to open an HTTP connection to the Microsoft Network Connectivity Status Indicator (NCSI) web service as indicator of Internet access

Check Internet access (HTTP method)
RT code PC code

Determine whether or not Internet access is available by attempting an HTTP connection to the "Microsoft Network Connectivity Status Indicator" (NCSI) web service.

LabVIEW RT block diagram snippet: Call an API and parse the returned JSON string

Call a Web service
RT code

Form a query string as a URL, retrieve the JSON string served by the Web service, and parse the JSON string to extract useful information.

LabVIEW RT block diagram snippet: Control onboard LEDs from web form data, return system date/time

Host a Web service
RT code

Host a web service on the Academic RIO Device to serve the states of onboard sensors (pushbutton and accelerometer) and system information (date, time, host name, and IP address), and to control the onboard LEDs based on a user-selected LED hex code.