CapacitorHttp: Response for binary file is neither blob nor base64

Capacitor
1

Hi there,
I’m completely new to capacitor, so beare with me.
Currently I’m trying to download a binary file (Sqlite database) and store it in the database folder. For storing I intend to use the blobwriter plugin which accepts a pure binary file only. Handing over the data of the response to blobwriter does not work, I get a file of size 0.
As the data in the response is of type “string” and its size is larger than that of the binary file, I suspected that the data is base64 encoded, however decoding by atob throws an error “wrong format”. Now I’m helpless.
Before I tried to use the Filesystem plugin but no success either. Therefore I switched to blobwriter.
My javascript:

        try {
            Capacitor.Plugins.Filesystem.requestPermissions().then((status) => {
                console.log(status);
                Capacitor.Plugins.CapacitorHttp.get({
                    url: 'https://webentwicklung.ulrichbangert.de/_benni/substanzen-electron/Substances.db',
                    responseType: 'blob'
                }).then(function ({ data }) {
                    console.log(data.length);
                    window.capacitor_blob_writer({
                        path: 'file:///data/user/0/com.substanzen.app/databases/SubstancesSQLite.db',
                        data: data.data,
                        fast_mode: true
                    });
                });
            });
        } catch (err) {
            console.log(`Error: ${err} `);
            throw new Error(`Error: ${err}`)
        }

This runs without throwing errors, however the resulting file in the database folder is empty.
Thanks in advance for your support!
Best regards, Ulrich

response-from-http-get
response-from-http-get1013×152 11.2 KB

2

Hi there,
in the meantime I fixed this issue by switching to the native fetch:

        function readDatabaseFile(event) {
            Capacitor.Plugins.Filesystem.requestPermissions().then((status) => {
                console.log(status);
                fetch('https://example.com/path/db-cors.php')
                    .then(response => response.blob())
                    .then(blob => {
                        // console.log(blob);
                        window.capacitor_blob_writer({
                            path: 'file:///data/user/0/com.substanzen.app/databases/SubstancesSQLite.db',
                            blob: blob
                            // fast_mode: true
                        }).then(result => {
                            alert('Datenbankdatei wurde erfolgreich eingelesen');
                        });
                    });
            });
        }