Pushing missing changes

MediaBrowser.ApiInteraction/AsyncHttpClient.cs

@@ -0,0 +1,234 @@
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Net;
+using System;
+using System.IO;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.ApiInteraction
+{
+    /// <summary>
+    /// Class AsyncHttpClient
+    /// </summary>
+    public class AsyncHttpClient : IAsyncHttpClient
+    {
+        /// <summary>
+        /// Gets or sets the HTTP client.
+        /// </summary>
+        /// <value>The HTTP client.</value>
+        private HttpClient HttpClient { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ApiClient" /> class.
+        /// </summary>
+        public AsyncHttpClient(HttpMessageHandler handler)
+        {
+            HttpClient = new HttpClient(handler);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ApiClient" /> class.
+        /// </summary>
+        public AsyncHttpClient()
+        {
+            HttpClient = new HttpClient();
+        }
+
+        /// <summary>
+        /// Gets the stream async.
+        /// </summary>
+        /// <param name="url">The URL.</param>
+        /// <param name="logger">The logger.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task{Stream}.</returns>
+        /// <exception cref="MediaBrowser.Model.Net.HttpException"></exception>
+        public async Task<Stream> GetStreamAsync(string url, ILogger logger, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            logger.Debug("Sending Http Get to {0}", url);
+
+            try
+            {
+                var msg = await HttpClient.GetAsync(url, cancellationToken).ConfigureAwait(false);
+
+                EnsureSuccessStatusCode(msg);
+
+                return await msg.Content.ReadAsStreamAsync().ConfigureAwait(false);
+            }
+            catch (HttpRequestException ex)
+            {
+                logger.ErrorException("Error getting response from " + url, ex);
+
+                throw new HttpException(ex.Message, ex);
+            }
+            catch (OperationCanceledException ex)
+            {
+                throw GetCancellationException(url, cancellationToken, ex, logger);
+            }
+            catch (Exception ex)
+            {
+                logger.ErrorException("Error requesting {0}", ex, url);
+                
+                throw;
+            }
+        }
+
+        /// <summary>
+        /// Posts the async.
+        /// </summary>
+        /// <param name="url">The URL.</param>
+        /// <param name="contentType">Type of the content.</param>
+        /// <param name="postContent">Content of the post.</param>
+        /// <param name="logger">The logger.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task{Stream}.</returns>
+        /// <exception cref="MediaBrowser.Model.Net.HttpException"></exception>
+        public async Task<Stream> PostAsync(string url, string contentType, string postContent, ILogger logger, CancellationToken cancellationToken)
+        {
+            logger.Debug("Sending Http Post to {0}", url);
+            
+            var content = new StringContent(postContent, Encoding.UTF8, contentType);
+
+            try
+            {
+                var msg = await HttpClient.PostAsync(url, content).ConfigureAwait(false);
+
+                EnsureSuccessStatusCode(msg);
+
+                return await msg.Content.ReadAsStreamAsync().ConfigureAwait(false);
+            }
+            catch (HttpRequestException ex)
+            {
+                logger.ErrorException("Error getting response from " + url, ex);
+
+                throw new HttpException(ex.Message, ex);
+            }
+            catch (OperationCanceledException ex)
+            {
+                throw GetCancellationException(url, cancellationToken, ex, logger);
+            }
+            catch (Exception ex)
+            {
+                logger.ErrorException("Error posting {0}", ex, url);
+
+                throw;
+            }
+        }
+
+        /// <summary>
+        /// Deletes the async.
+        /// </summary>
+        /// <param name="url">The URL.</param>
+        /// <param name="logger">The logger.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public async Task DeleteAsync(string url, ILogger logger, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            logger.Debug("Sending Http Delete to {0}", url);
+
+            try
+            {
+                using (var msg = await HttpClient.DeleteAsync(url, cancellationToken).ConfigureAwait(false))
+                {
+                    EnsureSuccessStatusCode(msg);
+                }
+            }
+            catch (HttpRequestException ex)
+            {
+                logger.ErrorException("Error getting response from " + url, ex);
+
+                throw new HttpException(ex.Message, ex);
+            }
+            catch (OperationCanceledException ex)
+            {
+                throw GetCancellationException(url, cancellationToken, ex, logger);
+            }
+            catch (Exception ex)
+            {
+                logger.ErrorException("Error requesting {0}", ex, url);
+
+                throw;
+            }
+        }
+
+        /// <summary>
+        /// Throws the cancellation exception.
+        /// </summary>
+        /// <param name="url">The URL.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <param name="exception">The exception.</param>
+        /// <param name="logger">The logger.</param>
+        /// <returns>Exception.</returns>
+        private Exception GetCancellationException(string url, CancellationToken cancellationToken, OperationCanceledException exception, ILogger logger)
+        {
+            // If the HttpClient's timeout is reached, it will cancel the Task internally
+            if (!cancellationToken.IsCancellationRequested)
+            {
+                var msg = string.Format("Connection to {0} timed out", url);
+
+                logger.Error(msg);
+
+                // Throw an HttpException so that the caller doesn't think it was cancelled by user code
+                return new HttpException(msg, exception) { IsTimedOut = true };
+            }
+
+            return exception;
+        }
+
+        /// <summary>
+        /// Ensures the success status code.
+        /// </summary>
+        /// <param name="response">The response.</param>
+        /// <exception cref="MediaBrowser.Model.Net.HttpException"></exception>
+        private void EnsureSuccessStatusCode(HttpResponseMessage response)
+        {
+            if (!response.IsSuccessStatusCode)
+            {
+                throw new HttpException(response.ReasonPhrase) { StatusCode = response.StatusCode };
+            }
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        /// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                HttpClient.Dispose();
+            }
+        }
+
+        /// <summary>
+        /// Sets the authorization header that should be supplied on every request
+        /// </summary>
+        /// <param name="header">The header.</param>
+        /// <exception cref="System.NotImplementedException"></exception>
+        public void SetAuthorizationHeader(string header)
+        {
+            if (string.IsNullOrEmpty(header))
+            {
+                HttpClient.DefaultRequestHeaders.Remove("Authorization");
+            }
+            else
+            {
+                HttpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("MediaBrowser", header);
+            }
+        }
+    }
+}