72 lines
2.2 KiB
C#
72 lines
2.2 KiB
C#
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using System;
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using System.IO;
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using System.Net;
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using System.Net.Http;
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using System.Threading.Tasks;
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namespace LeanCloud.Storage.Internal.File {
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internal class LCProgressableStreamContent : HttpContent {
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const int defaultBufferSize = 5 * 4096;
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readonly HttpContent content;
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readonly int bufferSize;
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readonly Action<long, long> progress;
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internal LCProgressableStreamContent(HttpContent content, Action<long, long> progress) : this(content, defaultBufferSize, progress) { }
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internal LCProgressableStreamContent(HttpContent content, int bufferSize, Action<long, long> progress) {
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if (content == null) {
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throw new ArgumentNullException("content");
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}
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if (bufferSize <= 0) {
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throw new ArgumentOutOfRangeException("bufferSize");
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}
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this.content = content;
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this.bufferSize = bufferSize;
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this.progress = progress;
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foreach (var h in content.Headers) {
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Headers.Add(h.Key, h.Value);
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}
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}
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protected override Task SerializeToStreamAsync(Stream stream, TransportContext context) {
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return Task.Run(async () => {
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var buffer = new byte[bufferSize];
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TryComputeLength(out long size);
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var uploaded = 0;
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using (var sinput = await content.ReadAsStreamAsync()) {
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while (true) {
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var length = sinput.Read(buffer, 0, buffer.Length);
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if (length <= 0) break;
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uploaded += length;
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progress?.Invoke(uploaded, size);
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stream.Write(buffer, 0, length);
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stream.Flush();
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}
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}
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stream.Flush();
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});
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}
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protected override bool TryComputeLength(out long length) {
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length = content.Headers.ContentLength.GetValueOrDefault();
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return true;
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}
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protected override void Dispose(bool disposing) {
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if (disposing) {
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content.Dispose();
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}
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base.Dispose(disposing);
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}
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}
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}
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