How to programatically send large IFC files to speckle using .NET SDK?

Help Developers
1

Hello, I am experimenting with the .NET SDK, and I would like to send large IFC files (321MB) to Speckle. How can I achieve this?

When I send smaller IFC files, it works correctly, but when I want to send larger data, I get the following error: An existing connection was forcibly closed by the remote host.

        string endpoint = "https://app.speckle.systems/api/file/autodetect/bbe2e198ff/test";
        string filepath = "D:/Speckle/IFC/KNR-K-E-XX-3D-XXX-100-KNORR BREMSE CENTRAL (33).ifc";
        string token = "91fe7fe8e47aeb4daef95a7ab01df07662e964d31a";//"ac7f250a838152dd69b538f08f6eef8cf125af7fa8";

        using (var httpClient = new HttpClient())
        {
            using (var formData = new MultipartFormDataContent())
            {
                using (var fileStream = new FileStream(filepath, FileMode.Open, FileAccess.Read))
                {
                    formData.Add(new StreamContent(fileStream), "file", Path.GetFileName(filepath));

                    httpClient.DefaultRequestHeaders.Add("Authorization", token);
                    httpClient.Timeout = new TimeSpan(1, 15, 0);

                    var response = await httpClient.PostAsync(endpoint, formData);

                    if (response.IsSuccessStatusCode)
                    {
                        var content = await response.Content.ReadAsStringAsync();
                        _logger.LogInformation(content);
                        return Ok(content);
                    }
                    else
                    {
                        var errorResponse = await response.Content.ReadAsStringAsync();
                        _logger.LogInformation(errorResponse);
                        return BadRequest(errorResponse);
                    }
                }
            }
        }
2

Hi @Botond_Biro, can you let us know which server you are using? There are some hard coded limits we impose, but those are flexible and can be changed based on your needs - I don’t remember what the defaults are right now (maybe @iainsproat or @gjedlicska do!)

3

By default a Speckle Server deployment will limit file sizes to 100Mb or less.

Iain

4

Thanks for the quick response. So, on the published server that I’m just using (app.speckle.systems), I cannot change the file upload limit? In the end, my goal is to be able to upload large files to my own local development environment.

5

The limit is set for the entire server and can only be configured by the server operator; https://app.speckle.systems currently has a 100Mb limit.
If you are running your own development server locally, it can be amended by changing the FILE_SIZE_LIMIT_MB environment variable on the speckle-server service defined in the docker compose file.

Iain

6

I understand, thank you for the help. :grinning: