File gets uploaded by always with an error : "Cannot read properties of undefined (reading 'write')"

Tus
1

I was spending some time trying to get file uploading done with NestJS/Fastify/Tus/Uppy. After some struggles I got it to work. Files get uploaded fine, but always returns the above error. So far I tried uploading very small files upto around 20MB. All gets uploaded and files are not corrupted either.

In dev tools what it shows is something like below

image
image881×87 8.03 KB

Seems like, it tries to upload a chunk, fails for some reason but manages to upload it again which goes fine.

The stack trace is below

"TypeError: Cannot read properties of undefined (reading ‘write’)\n at PatchHandler.send (D:\Projects\Streamline\streamline\node_modules\@tus\server\dist\handlers\PatchHandler.js:101:44)\n at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n at async DashboardController.uploadChunk

my nestJS controller has two methods like below(Note I had to remove some NestJS specific syntax (using @) here because editor complained)

All(‘upload’)
async upload(Req() req:Request, Res() res:Response) {
return await this.tusService.handleTus(req, res);
}

All(‘upload/*’)
async uploadChunk(Req() req:Request, Res() res:Response) {
return await this.tusService.handleTus(req, res);
}

Having one method like upload/* doesn’t work. So i had to add /upload endpoint and /upload/* both. That is why I have two methods here.

What may be the issue?

2

Hi, are you using the latest version of @tus/server and your chosen store? I haven’t worked with NestJS, but in Fastify you have to pass the req.raw and res.raw, maybe you need to pass the underlying request/response object too?

3

Yes the versions are fine. it’s just that I did a major blunder. I forgot to send a proper response back after the file upload is finished. That was casing the problem. So i tapped into onUploadFinish and did something like below

        onUploadFinish: (req, res, upload) => {
            const savedFileName = this.copyFile(upload.id, upload.metadata.filename)
            return {
                res,
                headers: {
                    ### my data
                }
            };
        },.

This sorted the problem.