Create an HTTP Endpoint
Problem
You want to create an HTTP endpoint that responds to GET requests with some static content, such as an HTML page or CSS stylesheet.
Solution
Use the HTTP In node to listen for requests, a
Template node to include the static content, and an
HTTP Response node to reply to the request.
Example
[{"id":"59ff2a1.fa600d4","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello","method":"get","swaggerDoc":"","x":100,"y":80,"wires":[["54c1e70d.ab3e18"]]},{"id":"54c1e70d.ab3e18","type":"template","z":"3045204d.cfbae","name":"page","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"<html>\n <head></head>\n <body>\n <h1>Hello World!</h1>\n </body>\n</html>","x":250,"y":80,"wires":[["266c286f.d993d8"]]},{"id":"266c286f.d993d8","type":"http response","z":"3045204d.cfbae","name":"","x":390,"y":80,"wires":[]}]
[~]$ curl http://localhost:1880/hello
<html>
<head></head>
<body>
<h1>Hello World!</h1>
</body>
</html>
Discussion
The HTTP In and HTTP Response
pair of nodes are the starting point for all HTTP endpoints you create.
Any flow that starts with an HTTP In node must have a
path to an HTTP Response node otherwise requests will
eventually timeout.
The HTTP Response node uses the payload property of
messages it receives as the body of the response. Other properties can be used to
further customize the response - they are covered in other recipes.
The Template node provides a convenient way to embed
a body of content into a flow. It may be desirable to maintain such static content
outside of the flow.
If you have turned on http authentication then you may need add your userid and password to the curl command. e.g.
[~]$ curl -u userid:password http://localhost:1880/hello
