Request to clearkey licensing server is made with "[object Object]" in request body

[AyrA]

Environment

• The MPD passes the DASH-IF Conformance Tool on https://conformance.dashif.org/
• The stream has correct Access-Control-Allow-Origin headers (CORS)
• There are no network errors such as 404s in the browser console when trying to play the stream
• The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page

• Link to playable MPD file: https://demo.bitmsg.ch/video/stream.mpd
• Dash.js version: 4.3.1
• Browser name/version: Firefox/99.0.1
• OS name/version: Windows 10

Steps to reproduce

1. Load the specified mpd into the reference player at https://reference.dashif.org/dash.js/latest/samples/dash-if-reference-player/index.html

Observed behavior

The request to the licensing URL is made with [object Object] with the request body instead of the actual data.

Console output

Request

{
    "log": {
        "version": "1.2",
        "creator": {
            "name": "Firefox",
            "version": "99.0.1"
        },
        "browser": {
            "name": "Firefox",
            "version": "99.0.1"
        },
        "pages": [{
                "startedDateTime": "2022-04-26T12:49:26.551+02:00",
                "id": "page_2",
                "title": "Dash JavaScript Player",
                "pageTimings": {
                    "onContentLoad": -18512,
                    "onLoad": -15429
                }
            }
        ],
        "entries": [{
                "pageref": "page_2",
                "startedDateTime": "2022-04-26T12:49:51.799+02:00",
                "request": {
                    "bodySize": 15,
                    "method": "POST",
                    "url": "https://demo.bitmsg.ch/api.php",
                    "httpVersion": "HTTP/2",
                    "headers": [{
                            "name": "Host",
                            "value": "demo.bitmsg.ch"
                        }, {
                            "name": "User-Agent",
                            "value": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:99.0) Gecko/20100101 Firefox/99.0"
                        }, {
                            "name": "Accept",
                            "value": "*/*"
                        }, {
                            "name": "Accept-Language",
                            "value": "en,en-US;q=0.5"
                        }, {
                            "name": "Accept-Encoding",
                            "value": "gzip, deflate, br"
                        }, {
                            "name": "Content-Type",
                            "value": "application/json"
                        }, {
                            "name": "Content-Length",
                            "value": "15"
                        }, {
                            "name": "Origin",
                            "value": "https://reference.dashif.org"
                        }, {
                            "name": "DNT",
                            "value": "1"
                        }, {
                            "name": "Connection",
                            "value": "keep-alive"
                        }, {
                            "name": "Referer",
                            "value": "https://reference.dashif.org/"
                        }, {
                            "name": "Sec-Fetch-Dest",
                            "value": "empty"
                        }, {
                            "name": "Sec-Fetch-Mode",
                            "value": "cors"
                        }, {
                            "name": "Sec-Fetch-Site",
                            "value": "cross-site"
                        }, {
                            "name": "TE",
                            "value": "trailers"
                        }
                    ],
                    "cookies": [],
                    "queryString": [],
                    "headersSize": 457,
                    "postData": {
                        "mimeType": "application/json",
                        "params": [],
                        "text": "[object Object]"
                    }
                },
                "response": {
                    "status": 400,
                    "statusText": "Bad Request",
                    "httpVersion": "HTTP/2",
                    "headers": [{
                            "name": "access-control-allow-methods",
                            "value": "HEAD, GET, POST, OPTIONS"
                        }, {
                            "name": "access-control-allow-origin",
                            "value": "*"
                        }, {
                            "name": "access-control-allow-headers",
                            "value": "Content-Type"
                        }, {
                            "name": "allow",
                            "value": "HEAD, GET, POST, OPTIONS"
                        }, {
                            "name": "strict-transport-security",
                            "value": "max-age=15768000"
                        }, {
                            "name": "vary",
                            "value": "User-Agent"
                        }, {
                            "name": "content-type",
                            "value": "application/json"
                        }, {
                            "name": "date",
                            "value": "Tue, 26 Apr 2022 10:49:53 GMT"
                        }, {
                            "name": "server",
                            "value": "Apache"
                        }, {
                            "name": "X-Firefox-Spdy",
                            "value": "h2"
                        }
                    ],
                    "cookies": [],
                    "content": {
                        "mimeType": "application/json",
                        "size": 53,
                        "text": "{\"error\":\"POST data is the string '[object Object]'\"}"
                    },
                    "redirectURL": "",
                    "headersSize": 359,
                    "bodySize": 412
                },
                "cache": {},
                "timings": {
                    "blocked": -1,
                    "dns": 0,
                    "connect": 0,
                    "ssl": 0,
                    "send": 0,
                    "wait": 46,
                    "receive": 0
                },
                "time": 46,
                "_securityState": "secure",
                "serverIPAddress": "141.95.47.146",
                "connection": "443"
            }
        ]
    }
}

Expected behavior

Proper serialization of the JSON object

[dsilhavy]

Try nightly this was fixed recently

• Nightly: reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/index.html
• Fix: JSON stringify the license request payload to Clearkey servers #3894

[Murmur]

@dsilhavy I can playback ClearKey with KID:KEY base64 values in an DRMOptions/[x]ClearKey but ClearKey laurl option field does not work in DemoPlayer UI? Also was unable to playback manifest with an embedded clearkeyLaurl xml element.

Reference Client 4.4.1 (development, commit: [2bb1cd24] nightly build

ClearKey works if I use dashjs API player.setProtectionData(org.w3.clearkey: serverURL) field in a customized player page, also an embedded clearkey:LaUrl xml element worked fine in a customized player page.

Manifest https://refapp.hbbtv.org/videos/02_gran_dillama_1080p_25f75g6sv7/drm/manifest_clearkey.mpd
Manifest (embedded laurl) https://refapp.hbbtv.org/videos/02_gran_dillama_1080p_25f75g6sv7/drm/manifest_clearkey_laurl.mpd
LaUrl https://refapp.hbbtv.org/videos/laurl_ck.php
LaUrl(optional) https://refapp.hbbtv.org/videos/laurl_ck.php?kid=43215678123412341234123412341236

ps: The original issue [object Object] payload was fixed in a nightly build.

[dsilhavy]

Thanks, I think the problem is that we tried to update the key session with an empty array of keypairs. I added a potential fix for this in #3939 . Should be available in nightly soon

[Murmur]

Thanks nightly v4.4.1 development 50376f58 works better but [x]ClearKey/License_server posted an empty {"kids":[],"type":"temporary"} payload. My test content works if I use LaUrl(optional) license url as I give an url parameter to identify which of the KID-KEY pair should be returned from the server.

Manifest with an embedded clearkey:laurl xml field works now in DemoUI, I must not click any of the drm options.

see my test content urls one comment up.

[dsilhavy]

Should be fixed in nightly with #3942