What is it I don't understand about HTTP request?

General
1

I want to send this, only with a payload as the Playlist number:

192.168.1.4:16008/MCWS/v1/Playback/PlayPlaylist?Zone=0&ZoneType=Index&Playlist=2&PlaylistType=Path

Putting that in a HTTP request node works, both on GET and PUT. To get the playlist from the payload I input 2 from an injection node and run it through a function node:

URL1 = "/MCWS/v1/Playback/PlayPlaylist?Zone=0&ZoneType=Index&Playlist=";`
URL2 = "&PlaylistType=Path";
msg.payload = URL1+playlist+URL2;
return msg;

And then use this as the URL:
http://192.168.1.4:16008

But that doesn't work at all. I tried setting the append to query string parameters, but that just gave me "invalid payload". But the payload seems to be what I wanted to input:

"/MCWS/v1/Playback/PlayPlaylist?Zone=0&ZoneType=Index&Playlist=2&PlaylistType=Path"

Or should there not be quotes there? If I try that, it fails in the function node.

Can somebody please tell me how do I do this in a working way? Here is the full flow:

[
    {
        "id": "a53bb1e6.a39fc8",
        "type": "inject",
        "z": "b2be241794e49f01",
        "name": "",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "2",
        "payloadType": "num",
        "x": 90,
        "y": 80,
        "wires": [
            [
                "67893714e22c6c1a"
            ]
        ]
    },
    {
        "id": "e14bd1af.2df488",
        "type": "http request",
        "z": "b2be241794e49f01",
        "name": "Playlist to JRMC",
        "method": "GET",
        "ret": "txt",
        "paytoqs": "query",
        "url": "http://192.168.1.4:16008",
        "tls": "",
        "persist": false,
        "proxy": "",
        "insecureHTTPParser": false,
        "authType": "",
        "senderr": false,
        "headers": [],
        "x": 420,
        "y": 80,
        "wires": [
            [
                "b3e62b5a.039c7"
            ]
        ]
    },
    {
        "id": "b3e62b5a.039c7",
        "type": "debug",
        "z": "b2be241794e49f01",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 670,
        "y": 80,
        "wires": []
    },
    {
        "id": "67893714e22c6c1a",
        "type": "function",
        "z": "b2be241794e49f01",
        "name": "function 1",
        "func": "playlist = msg.payload;\nURL1 = \"/MCWS/v1/Playback/PlayPlaylist?Zone=0&ZoneType=Index&Playlist=\";\nURL2 = \"&PlaylistType=Path\";\nmsg.payload = URL1+playlist+URL2;\nreturn msg;\n\n",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 240,
        "y": 80,
        "wires": [
            [
                "e14bd1af.2df488",
                "7288245b173f7193"
            ]
        ]
    },
    {
        "id": "7288245b173f7193",
        "type": "debug",
        "z": "b2be241794e49f01",
        "name": "debug 7",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 360,
        "y": 140,
        "wires": []
    }
]
2

Never mind! I findally found it, using a change node and having the full URL in the function node.

3

Just for info
For GET you can set the url in http request node
and append msg.payload as the query string.
The payload would be

{
  "Zone":0,
  "ZoneType":"Index",
  "Playlist":2
  ,"PlaylistType":"Path"
}

The function code

msg.payload = {
    Zone: 0,
    ZoneType:  "Index",
    Playlist: msg.payload,
    PlaylistType: "Path"
}

return msg;

example flow

[{"id":"a53bb1e6.a39fc8","type":"inject","z":"b9860b4b9de8c8da","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"2","payloadType":"num","x":470,"y":120,"wires":[["67893714e22c6c1a"]]},{"id":"67893714e22c6c1a","type":"function","z":"b9860b4b9de8c8da","name":"function 1","func":"\nmsg.payload = {\n    Zone: 0,\n    ZoneType:  \"Index\",\n    Playlist: msg.payload,\n    PlaylistType: \"Path\"\n}\n\nreturn msg;\n\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":620,"y":120,"wires":[["e14bd1af.2df488","7288245b173f7193"]]},{"id":"e14bd1af.2df488","type":"http request","z":"b9860b4b9de8c8da","name":"Playlist to JRMC","method":"GET","ret":"txt","paytoqs":"query","url":"http://192.168.1.4:16008","tls":"","persist":false,"proxy":"","insecureHTTPParser":false,"authType":"","senderr":false,"headers":[],"credentials":{"user":"","password":""},"x":800,"y":120,"wires":[["b3e62b5a.039c7"]]},{"id":"7288245b173f7193","type":"debug","z":"b9860b4b9de8c8da","name":"debug 7","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":740,"y":180,"wires":[]},{"id":"b3e62b5a.039c7","type":"debug","z":"b9860b4b9de8c8da","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":1050,"y":120,"wires":[]}]

For put example

[{"id":"a53bb1e6.a39fc8","type":"inject","z":"b9860b4b9de8c8da","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"2","payloadType":"num","x":470,"y":120,"wires":[["67893714e22c6c1a"]]},{"id":"67893714e22c6c1a","type":"function","z":"b9860b4b9de8c8da","name":"function 1","func":"let playlist = msg.payload;\nlet URL1 = \"http://192.168.1.4:16008/MCWS/v1/Playback/PlayPlaylist?Zone=0&ZoneType=Index&Playlist=\";\nlet URL2 = \"&PlaylistType=Path\";\nmsg.url = URL1+playlist+URL2;\nreturn msg;\n\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":620,"y":120,"wires":[["e14bd1af.2df488","7288245b173f7193"]]},{"id":"e14bd1af.2df488","type":"http request","z":"b9860b4b9de8c8da","name":"Playlist to JRMC","method":"PUT","ret":"txt","paytoqs":"query","url":"http://192.168.1.4:16008","tls":"","persist":false,"proxy":"","insecureHTTPParser":false,"authType":"","senderr":false,"headers":[],"credentials":{},"x":800,"y":120,"wires":[["b3e62b5a.039c7"]]},{"id":"7288245b173f7193","type":"debug","z":"b9860b4b9de8c8da","name":"debug 7","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":740,"y":180,"wires":[]},{"id":"b3e62b5a.039c7","type":"debug","z":"b9860b4b9de8c8da","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":1050,"y":120,"wires":[]}]

PUT function code which will work for get also.

let playlist = msg.payload;
let URL1 = "http://192.168.1.4:16008/MCWS/v1/Playback/PlayPlaylist?Zone=0&ZoneType=Index&Playlist=";
let URL2 = "&PlaylistType=Path";
msg.url = URL1+playlist+URL2;
return msg;

Also you need to declare your variables in the JS code. const, let, var.

1 Like
4

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