invalid encoding when posting upload

[arobbins530]

I'm attempting to upload a gpx file to the uploads API, but keep running into errors. 

I am doing this with javascript/nodejs. Unfortunately due to the deprecation of the request-json library, the strava api npm library has broken, so I'm trying to implement this with node-fetch. The code I'm using is:

const content = fs.createReadStream(__dirname + '/tmp/route.gpx');

  const fileForm = new FormData();

  fileForm.append('file', content, {

    "Content-Type": "multipart/form-data",

    "filename": "route.gpx"

  });

  const postBody = {

    file: fileForm,

    name: title,

    description,

    data_Type: "gpx",

    sport_type: sportType,

    external_id: externalId

  };

  const postResponse = await fetch('https://www.strava.com/api/v3/uploads', {

    method: 'post',

    body: postBody,

    headers: {

      'Content-Type': 'application/json',

      'Authorization': `Bearer ${accessToken}`,

    }

  });

I've tried lots of variations of this including

• JSON.stringify-ing the request body
• Changing content type to 'multipart/form-data'
• setting 'file' directly to the readstream object

Nothing has worked. I usually get one of these three errors:

1. {"status":400,"resource":"body","field":"json","code":"invalid encoding"}
2. {"message":"Bad Request","errors":[{"resource":"Upload","field":"file","code":"not a file"}]}
3. {"message":"Bad Request","errors":[{"resource":"Upload","field":"data","code":"empty"}]}

FWIW I have also manually uploaded the gpx file to strava without issue, so the file data is formatted correctly. I appreciate any help!

[arobbins530 · Accepted solution]

Wow, ok I've been working on this for hours and I solved it minutes after posting this. Here is the code that worked

const content = fs.createReadStream(__dirname + '/tmp/route.gpx');

const fileForm = new FormData();

fileForm.append('file', content, {

  "Content-Type": "multipart/form-data",

  "filename": "route.gpx"

});

fileForm.append("name", title);

fileForm.append("description", description);

fileForm.append("data_type", "gpx");

fileForm.append("sport_type", sportType);

fileForm.append("external_id", externalId);

fileForm.append("Content-Type", "application/octet-stream");

fileForm.append("Content-Type", "multipart/form-data");

const postResponse = await fetch('https://www.strava.com/api/v3/uploads', {

  method: 'post',

  body: fileForm,

  headers: {

    'Authorization': `Bearer ${accessToken}`,

  }

});

[arobbins530]

Sorry, I guess I can't edit. Accidentally left in two lines that should be left out. Remove:

fileForm.append("Content-Type", "application/octet-stream");

fileForm.append("Content-Type", "multipart/form-data");