Changed GET requests into POST, API does not support GET anymore

[michielpost]

See docs: https://docs.ipfs.io/reference/http/api/#api-v0-cat

[pvanroos]

is this project dying? I'd love to see this merged.

[michielpost]

You can use this code as a workaround to downoad files using the POST api:
var response = await _client.PostDownloadAsync("cat", default(CancellationToken), fileName);

[matnar]

I had the same problem and solved in the same way as proposed in this pull request