Activities of "mmorales"

I no longer get the kestreI error but still get the same result. I can see the content download on dev tools (zone.js as XHR) then once transfer is complete the download starts.

On the angular side I have the below code. Once the method subscribes (InitializeDownload()) I can see the download on the developer tools under network once the transfer is done the code under subscribe method executes

when looking at the serve logs

WARN 2020-06-17 09:57:07,055 [23 ] nostics.DeveloperExceptionPageMiddleware - The response has already started, the error page middleware will not be executed. ERROR 2020-06-17 09:57:07,056 [23 ] Microsoft.AspNetCore.Server.Kestrel - Connection id "0HM0IRS3OGV70", Request id "0HM0IRS3OGV70:00000035": An unhandled exception was thrown by the application.

Second part of code is the asp.netcore

I can't figure out why it makes two request and why it takes really long for the download to start.

Angular: downlodFile(id): void {

    let filedownloadInput = new FileDownloadInput();
    filedownloadInput.id = id;

    this._FileManagerService.downloadFile(filedownloadInput).subscribe(item => {
         this.InitializeDownload(item.fileName, item.fileToken).subscribe((data: any) => {

            this.blob = new Blob([data], { type: 'application/pdf' });

            var downloadURL = window.URL.createObjectURL(data);
            var link = document.createElement('a');
            link.href = downloadURL;
            link.download = item.fileName;
            link.click();

        });
    });
}
InitializeDownload(fileName:string, fileToken:string) {
    const url = AppConsts.remoteServiceBaseUrl + '/FileManager/GetFile';
    this.token = this._tokenService.getToken();
    let params = new HttpParams();

    params = params.append('fileName', fileName);
    params = params.append('fileToken', fileToken);
    const httpOptions = {
        responseType: 'blob' as 'json',
        headers: new HttpHeaders({
            "Authorization": "Bearer " + this.token
        }),
        params: params
    };

    return this._httpClient.get(url, httpOptions);
}

**
necore**

 public async Task GetFile( string fileName, string fileToken)
    {
        Stream stream = null;
        int bufferSize = 1048576;
        byte[] buffer = new byte[bufferSize];
        int length;
        long lengthToRead;

        try
        {
            string filePath = Path.Combine(_env.WebRootPath, $"Common{Path.DirectorySeparatorChar}", $"Files{Path.DirectorySeparatorChar}", fileToken);

            stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
            long dj = stream.Length / bufferSize;
            if (stream.Length % bufferSize > 0)
            {
                dj += 1;
            }



            dj = dj * bufferSize;
            lengthToRead = stream.Length;
            
            Response.ContentType = "application/pdf";
            Response.Headers.Add("Content-Disposition", "attachment; filename=" + fileName);
            Response.Headers.Add("content-length", dj.ToString());
           // Response.ContentLength = dj;

            while( lengthToRead > 0)
            {
                length = stream.Read(buffer, 0, bufferSize);

               await Response.BodyWriter.WriteAsync(buffer);

               await Response.BodyWriter.FlushAsync();

                lengthToRead = lengthToRead - length;

               
            }
        }
        catch(Exception exp)
        {
            Response.ContentType = "text/html";
            
        }
        finally
        {
            if(stream != null)
            {
                stream.Close();
            }
        }

    }
}

Thank you.

Yes, that worked. I noticed one thing. When I upload a large file it takes a long time before the request is sent to the backend(asp.netcore). what could this be?

Another questions, is it being sent in chunks?

I'm trying to upload a 25GB file using the ng2-file-upload but I'm getting the following error on large files : Access to XMLHttpRequest at 'https://localhost:44301/FileManager/UploadFile' from origin 'http://localhost:4200' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Smaller files work okay.

upload(): void {
    var parentId = document.getElementById('folderId').innerHTML;
    this._uploaderOptions.autoUpload = false;
    this._uploaderOptions.authToken = 'Bearer ' + this._tokenService.getToken();
    this._uploaderOptions.removeAfterUpload = true;
    this.uploader.onAfterAddingFile = (file) => {
        file.withCredentials = false;
    };
    this.uploader.onBuildItemForm = (fileItem: FileItem, form: any) => {
        form.append('FileType', fileItem.file.type);
        form.append('FileName', fileItem.file.name);
        form.append('FileToken', this.guid());
        form.append('FolderId', parentId);
    };

    this.uploader.onSuccessItem = (item, response, status) => {
        const resp = <IAjaxResponse>JSON.parse(response);
        console.log(resp);
        if (resp.success) {
            this.InsertDocInformation(resp.result.fileToken, resp.result.fileName, parentId);
        } else {
            this.message.error(resp.error.message);
        }
    };
    this.uploader.setOptions(this._uploaderOptions);

    this.uploader.uploadAll();

}

Hello,

Is it possible to have a windows client app running signal R communicate with ASP.NET Zero. I want to be able to send calls to the app and transfer files between both. What are the limitations and recommendations. Appreciate any light you can shed on this issue.

My WAF was creating the CORS policy issue. Disabled CORS on WAF server.

Working on ASPNet Core and Angular version 6.8 and getting CORS policy error. See error message below, any help with this request would be greatly appreciated.

Access to XMLHttpRequest at 'https://lvnfapi01.digi360.us/AbpUserConfiguration/GetAll?d=1562966988907' from origin 'https://digi360.us' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The 'Access-Control-Allow-Origin' header contains multiple values 'https://digi360.us, *', but only one is allowed.

Thanks, fix wored.

Running ~~verion 7.0 of~~ ASP.Net Core & Angular UI and experiencing issue with the freeze UI spinner. When I try to login and use the wrong password the spinner pops up with the transparent white background. The error messages comes up but is behind the spinner. I cannot click ok to continue and type the correct username and password. I have to refresh the browser so the spinner goes away. Any help with this issue woudl be greatly appreciated.