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Post Raw Data to a Flow

Problem​

You want to post raw text data to a flow.

Solution​

Use the HTTP In node to listen for POST requests that have their Content-Type set to text/plain and access the posted data as msg.payload.

Example​


Flow JSON
[{"id":"3e1c5107.c1e3ae","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-raw","method":"post","swaggerDoc":"","x":120,"y":920,"wires":[["cf679478.309868"]]},{"id":"cf679478.309868","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 {{ payload }}!</h1>\n    </body>\n</html>","x":290,"y":920,"wires":[["f3c1a3f0.0c3e6"]]},{"id":"f3c1a3f0.0c3e6","type":"http response","z":"3045204d.cfbae","name":"","x":430,"y":920,"wires":[]}]
[~]$ curl -X POST -d 'Nick' -H "Content-type: text/plain" https://app_name.herokuapp.com/hello-raw
<html>
    <head></head>
    <body>
        <h1>Hello Nick!</h1>
    </body>
</html>

Discussion​

When the HTTP In node receives a request with the Content-Type header set to text/plain it makes the body available as msg.payload:

var name = msg.payload;