87 lines
3.2 KiB
C#
87 lines
3.2 KiB
C#
using System;
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using System.Net;
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using System.Net.Http;
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using System.Net.Http.Headers;
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using System.Collections.Generic;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Text;
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using System.IO;
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using NetHttpClient = System.Net.Http.HttpClient;
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namespace LeanCloud.Storage.Internal {
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public class HttpClient {
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static readonly HashSet<string> HttpContentHeaders = new HashSet<string> {
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{ "Allow" },
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{ "Content-Disposition" },
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{ "Content-Encoding" },
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{ "Content-Language" },
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{ "Content-Length" },
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{ "Content-Location" },
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{ "Content-MD5" },
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{ "Content-Range" },
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{ "Content-Type" },
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{ "Expires" },
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{ "Last-Modified" }
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};
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readonly NetHttpClient client;
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public HttpClient() {
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client = new NetHttpClient();
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// TODO 设置版本号
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client.DefaultRequestHeaders.Add("User-Agent", "LeanCloud-dotNet-SDK/" + "2.0.0");
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}
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public HttpClient(NetHttpClient client) {
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this.client = client;
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}
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public async Task<Tuple<HttpStatusCode, string>> ExecuteAsync(HttpRequest httpRequest,
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IProgress<AVUploadProgressEventArgs> uploadProgress,
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IProgress<AVDownloadProgressEventArgs> downloadProgress,
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CancellationToken cancellationToken) {
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HttpMethod httpMethod = httpRequest.Method;
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HttpRequestMessage message = new HttpRequestMessage(httpMethod, httpRequest.Uri);
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// Fill in zero-length data if method is post.
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if (httpRequest.Data == null && httpRequest.Method == HttpMethod.Post) {
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message.Content = new StreamContent(new MemoryStream(new byte[0]));
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}
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if (httpRequest.Data != null) {
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message.Content = new StreamContent(httpRequest.Data);
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}
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if (httpRequest.Headers != null) {
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foreach (var header in httpRequest.Headers) {
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if (!string.IsNullOrEmpty(header.Value)) {
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if (HttpContentHeaders.Contains(header.Key)) {
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message.Content.Headers.Add(header.Key, header.Value);
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} else {
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message.Headers.Add(header.Key, header.Value);
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}
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}
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}
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}
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// Avoid aggressive caching on Windows Phone 8.1.
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message.Headers.Add("Cache-Control", "no-cache");
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message.Headers.IfModifiedSince = DateTimeOffset.UtcNow;
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uploadProgress?.Report(new AVUploadProgressEventArgs { Progress = 0 });
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var response = await client.SendAsync(message, HttpCompletionOption.ResponseHeadersRead, cancellationToken);
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uploadProgress?.Report(new AVUploadProgressEventArgs { Progress = 1 });
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message.Dispose();
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var resultString = await response.Content.ReadAsStringAsync();
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response.Dispose();
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downloadProgress?.Report(new AVDownloadProgressEventArgs { Progress = 1 });
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return new Tuple<HttpStatusCode, string>(response.StatusCode, resultString);
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}
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}
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}
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