1 files changed, 108 insertions, 0 deletions
diff --git a/Emby.Dlna/PlayTo/DlnaHttpClient.cs b/Emby.Dlna/PlayTo/DlnaHttpClient.cs
new file mode 100644
index 000000000..75ff542dd
--- /dev/null
+++ b/Emby.Dlna/PlayTo/DlnaHttpClient.cs
@@ -0,0 +1,108 @@
+#pragma warning disable CS1591
+
+using System;
+using System.Globalization;
+using System.Net.Http;
+using System.Net.Mime;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Xml;
+using System.Xml.Linq;
+using Emby.Dlna.Common;
+using MediaBrowser.Common.Net;
+using Microsoft.Extensions.Logging;
+
+namespace Emby.Dlna.PlayTo
+{
+    public class DlnaHttpClient
+    {
+        private readonly ILogger _logger;
+        private readonly IHttpClientFactory _httpClientFactory;
+
+        public DlnaHttpClient(ILogger logger, IHttpClientFactory httpClientFactory)
+        {
+            _logger = logger;
+            _httpClientFactory = httpClientFactory;
+        }
+
+        private static string NormalizeServiceUrl(string baseUrl, string serviceUrl)
+        {
+            // If it's already a complete url, don't stick anything onto the front of it
+            if (serviceUrl.StartsWith("http", StringComparison.OrdinalIgnoreCase))
+            {
+                return serviceUrl;
+            }
+
+            if (!serviceUrl.StartsWith('/'))
+            {
+                serviceUrl = "/" + serviceUrl;
+            }
+
+            return baseUrl + serviceUrl;
+        }
+
+        private async Task<XDocument?> SendRequestAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+        {
+            using var response = await _httpClientFactory.CreateClient(NamedClient.Dlna).SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
+            response.EnsureSuccessStatusCode();
+            await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
+            try
+            {
+                return await XDocument.LoadAsync(
+                    stream,
+                    LoadOptions.None,
+                    cancellationToken).ConfigureAwait(false);
+            }
+            catch (XmlException ex)
+            {
+                _logger.LogError(ex, "Failed to parse response");
+                if (_logger.IsEnabled(LogLevel.Debug))
+                {
+                    _logger.LogDebug("Malformed response: {Content}\n", await response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false));
+                }
+
+                return null;
+            }
+        }
+
+        public async Task<XDocument?> GetDataAsync(string url, CancellationToken cancellationToken)
+        {
+            using var request = new HttpRequestMessage(HttpMethod.Get, url);
+
+            // Have to await here instead of returning the Task directly, otherwise request would be disposed too soon
+            return await SendRequestAsync(request, cancellationToken).ConfigureAwait(false);
+        }
+
+        public async Task<XDocument?> SendCommandAsync(
+            string baseUrl,
+            DeviceService service,
+            string command,
+            string postData,
+            string? header = null,
+            CancellationToken cancellationToken = default)
+        {
+            using var request = new HttpRequestMessage(HttpMethod.Post, NormalizeServiceUrl(baseUrl, service.ControlUrl))
+            {
+                Content = new StringContent(postData, Encoding.UTF8, MediaTypeNames.Text.Xml)
+            };
+
+            request.Headers.TryAddWithoutValidation(
+                "SOAPACTION",
+                string.Format(
+                    CultureInfo.InvariantCulture,
+                    "\"{0}#{1}\"",
+                    service.ServiceType,
+                    command));
+            request.Headers.Pragma.ParseAdd("no-cache");
+
+            if (!string.IsNullOrEmpty(header))
+            {
+                request.Headers.TryAddWithoutValidation("contentFeatures.dlna.org", header);
+            }
+
+            // Have to await here instead of returning the Task directly, otherwise request would be disposed too soon
+            return await SendRequestAsync(request, cancellationToken).ConfigureAwait(false);
+        }
+    }
+}