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Transfer file to hololens via POST httprequest (error 429)

edited September 2017 in Questions And Answers


I work on a desktop application to communicate with hololens glasses via httprequest (hololens is connected via USB), especially, I want to read and write files. To do that, I use the following code (code is more readable on stackoverflow) :

    // Consts
    public static readonly string API_FileQuery = 

    public async static void UploadFile(ConnectInfo connectInfo, 
                string knownfolderid, 
                string packagefullname, 
                string path, 
                string filePath)
            // Query
            string query = string.Format(API_FileQuery, 
            query += "?knownfolderid=" + 
            query += "&packagefullname=" + 
            query += "&path=" + 

            //  Create http request
            var httpRequest = new HttpClient();

            httpRequest.DefaultRequestHeaders.Authorization = 
               new System.Net.Http.Headers.AuthenticationHeaderValue(
            "Basic", EncodeTo64(connectInfo.User + ":" + connectInfo.Password));
            byte[] data = File.ReadAllBytes(filePath);
            ByteArrayContent byteContent = 
                    new ByteArrayContent(data);

            HttpResponseMessage resp = 
                    await httpRequest.PostAsync(query, byteContent);

            var responseMessage = 
                    await resp.Content.ReadAsStringAsync();
        catch (Exception ex)
            //log some problems

    // Helpers
    private static string EncodeTo64(string toEncode)
        byte[] toEncodeAsBytes = Encoding.ASCII.GetBytes(toEncode);
        string returnValue = Convert.ToBase64String(toEncodeAsBytes);
        return returnValue;

I already have a GetFile method (same REST API but with GET http request) that works fine and gives me the file I want but the UploadFile method gives me the following response : StatusCode : 429, ReasonPhrase : 'Too Many Requests' (I try to upload a json file).

I don't really understand why I have this error, I just send 1 request (or I'm missing something).

For information, REST API definition can be found there.



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