33 lines
1.3 KiB
C#
33 lines
1.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace MSEssentials.Extensions
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{
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public static class HttpClientExtensions
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{
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public static async Task DownloadAsync(this HttpClient client, string requestUri, Stream destination, CancellationToken cancellationToken = default, IProgress<double> progress = null)
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{
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using (HttpResponseMessage response = await client.GetAsync(requestUri, HttpCompletionOption.ResponseHeadersRead))
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{
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long? contentLength = response.Content.Headers.ContentLength;
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await using (Stream download = await response.Content.ReadAsStreamAsync(cancellationToken))
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{
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if (progress == null || !contentLength.HasValue)
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{
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await download.CopyToAsync(destination);
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return;
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}
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var relativeProgress = new Progress<long>(totalBytes => progress.Report((double)totalBytes * 100 / contentLength.Value));
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await download.CopyToAsync(destination, 81920, relativeProgress, cancellationToken);
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progress.Report(100);
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}
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}
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}
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}
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}
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