送信されたリクエストのHTTPヘッダへアクセスしたい。
HTTP In
ノードに送信されたメッセージの
msg.req.headers
プロパティを使用して、ヘッダにアクセスします。
[{"id":"c1460268.3eba","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-headers","method":"get","swaggerDoc":"","x":130,"y":380,"wires":[["24199456.dbe66c"]]},{"id":"24199456.dbe66c","type":"template","z":"3045204d.cfbae","name":"page","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"<html>\n <head></head>\n <body>\n <h1>User agent: {{req.headers.user-agent}}</h1>\n </body>\n</html>","x":310,"y":380,"wires":[["b3531892.4cace8"]]},{"id":"b3531892.4cace8","type":"http response","z":"3045204d.cfbae","name":"","x":450,"y":380,"wires":[]}]
[~]$ curl http://localhost:1880/hello-headers
<html>
<head></head>
<body>
<h1>User agent: curl/7.49.1</h1>
</body>
</html>
msg.req.headers
プロパティは、各リクエストパラメータのキーと値のペアで構成されたオブジェクトです。
ヘッダ名は、リクエストの内容にかかわらず、すべて小文字です。