Added a BaseKernel for the UI and Server to share, and made some other minor re-organizations.

8 files changed, 391 insertions, 0 deletions

diff --git a/MediaBrowser.Common/Net/CollectionExtensions.cs b/MediaBrowser.Common/Net/CollectionExtensions.cs
new file mode 100644
index 0000000000..98d24dfc04
--- /dev/null
+++ b/MediaBrowser.Common/Net/CollectionExtensions.cs
@@ -0,0 +1,14 @@
+using System.Collections.Generic;

+using System.Collections.Specialized;

+using System.Linq;

+

+namespace MediaBrowser.Common.Net

+{

+    public static class CollectionExtensions

+    {

+        public static IDictionary<string, IEnumerable<string>> ToDictionary(this NameValueCollection source)

+        {

+            return source.AllKeys.ToDictionary<string, string, IEnumerable<string>>(key => key, source.GetValues);

+        }

+    }

+}
\ No newline at end of file
diff --git a/MediaBrowser.Common/Net/Handlers/BaseEmbeddedResourceHandler.cs b/MediaBrowser.Common/Net/Handlers/BaseEmbeddedResourceHandler.cs
new file mode 100644
index 0000000000..d8347db30e
--- /dev/null
+++ b/MediaBrowser.Common/Net/Handlers/BaseEmbeddedResourceHandler.cs
@@ -0,0 +1,58 @@
+using System;

+using System.IO;

+

+namespace MediaBrowser.Common.Net.Handlers

+{

+    public abstract class BaseEmbeddedResourceHandler : BaseHandler

+    {

+        public BaseEmbeddedResourceHandler(string resourcePath)

+            : base()

+        {

+            ResourcePath = resourcePath;

+        }

+

+        protected string ResourcePath { get; set; }

+

+        public override string ContentType

+        {

+            get

+            {

+                string extension = Path.GetExtension(ResourcePath);

+

+                if (extension.EndsWith("jpeg", StringComparison.OrdinalIgnoreCase) || extension.EndsWith("jpg", StringComparison.OrdinalIgnoreCase))

+                {

+                    return "image/jpeg";

+                }

+                else if (extension.EndsWith("png", StringComparison.OrdinalIgnoreCase))

+                {

+                    return "image/png";

+                }

+                else if (extension.EndsWith("ico", StringComparison.OrdinalIgnoreCase))

+                {

+                    return "image/ico";

+                }

+                else if (extension.EndsWith("js", StringComparison.OrdinalIgnoreCase))

+                {

+                    return "application/x-javascript";

+                }

+                else if (extension.EndsWith("css", StringComparison.OrdinalIgnoreCase))

+                {

+                    return "text/css";

+                }

+                else if (extension.EndsWith("html", StringComparison.OrdinalIgnoreCase))

+                {

+                    return "text/html; charset=utf-8";

+                }

+

+                return "text/plain; charset=utf-8";

+            }

+        }

+

+        protected override void WriteResponseToOutputStream(Stream stream)

+        {

+            GetEmbeddedResourceStream().CopyTo(stream);

+        }

+

+        protected abstract Stream GetEmbeddedResourceStream();

+    }

+}

diff --git a/MediaBrowser.Common/Net/Handlers/BaseHandler.cs b/MediaBrowser.Common/Net/Handlers/BaseHandler.cs
new file mode 100644
index 0000000000..6f6779ad3a
--- /dev/null
+++ b/MediaBrowser.Common/Net/Handlers/BaseHandler.cs
@@ -0,0 +1,111 @@
+using System;

+using System.Collections.Generic;

+using System.Collections.Specialized;

+using System.IO;

+using System.IO.Compression;

+

+namespace MediaBrowser.Common.Net.Handlers

+{

+    public abstract class BaseHandler

+    {

+        /// <summary>

+        /// Response headers

+        /// </summary>

+        public IDictionary<string, string> Headers = new Dictionary<string, string>();

+

+        /// <summary>

+        /// The action to write the response to the output stream

+        /// </summary>

+        public Action<Stream> WriteStream { get; set; }

+

+        /// <summary>

+        /// The original RequestContext

+        /// </summary>

+        public RequestContext RequestContext { get; set; }

+

+        /// <summary>

+        /// The original QueryString

+        /// </summary>

+        protected NameValueCollection QueryString

+        {

+            get

+            {

+                return RequestContext.Request.QueryString;

+            }

+        }

+

+        /// <summary>

+        /// Gets the MIME type to include in the response headers

+        /// </summary>

+        public abstract string ContentType { get; }

+

+        /// <summary>

+        /// Gets the status code to include in the response headers

+        /// </summary>

+        public virtual int StatusCode

+        {

+            get

+            {

+                return 200;

+            }

+        }

+

+        /// <summary>

+        /// Gets the cache duration to include in the response headers

+        /// </summary>

+        public virtual TimeSpan CacheDuration

+        {

+            get

+            {

+                return TimeSpan.FromTicks(0);

+            }

+        }

+

+        /// <summary>

+        /// Gets the last date modified of the content being returned, if this can be determined.

+        /// This will be used to invalidate the cache, so it's not needed if CacheDuration is 0.

+        /// </summary>

+        public virtual DateTime? LastDateModified

+        {

+            get

+            {

+                return null;

+            }

+        }

+

+        public virtual bool GzipResponse

+        {

+            get

+            {

+                return true;

+            }

+        }

+

+        public BaseHandler()

+        {

+            WriteStream = s =>

+            {

+                WriteReponse(s);

+                s.Close();

+            };

+        }

+

+        private void WriteReponse(Stream stream)

+        {

+            if (GzipResponse)

+            {

+                using (GZipStream gzipStream = new GZipStream(stream, CompressionMode.Compress, false))

+                {

+                    WriteResponseToOutputStream(gzipStream);

+                }

+            }

+            else

+            {

+                WriteResponseToOutputStream(stream);

+            }

+        }

+

+        protected abstract void WriteResponseToOutputStream(Stream stream);

+

+    }

+}
\ No newline at end of file
diff --git a/MediaBrowser.Common/Net/Handlers/BaseJsonHandler.cs b/MediaBrowser.Common/Net/Handlers/BaseJsonHandler.cs
new file mode 100644
index 0000000000..30113198b9
--- /dev/null
+++ b/MediaBrowser.Common/Net/Handlers/BaseJsonHandler.cs
@@ -0,0 +1,11 @@
+

+namespace MediaBrowser.Common.Net.Handlers

+{

+    public abstract class BaseJsonHandler : BaseHandler

+    {

+        public override string ContentType

+        {

+            get { return "application/json"; }

+        }

+    }

+}

diff --git a/MediaBrowser.Common/Net/HttpServer.cs b/MediaBrowser.Common/Net/HttpServer.cs
new file mode 100644
index 0000000000..fad8d13eb9
--- /dev/null
+++ b/MediaBrowser.Common/Net/HttpServer.cs
@@ -0,0 +1,42 @@
+using System;

+using System.Net;

+using System.Reactive.Linq;

+

+namespace MediaBrowser.Common.Net

+{

+    public class HttpServer : IObservable<RequestContext>, IDisposable

+    {

+        private readonly HttpListener listener;

+        private readonly IObservable<RequestContext> stream;

+

+        public HttpServer(string url)

+        {

+            listener = new HttpListener();

+            listener.Prefixes.Add(url);

+            listener.Start();

+            stream = ObservableHttpContext();

+        }

+

+        private IObservable<RequestContext> ObservableHttpContext()

+        {

+            return Observable.Create<RequestContext>(obs =>

+                                Observable.FromAsyncPattern<HttpListenerContext>(listener.BeginGetContext,

+                                                                                 listener.EndGetContext)()

+                                          .Select(c => new RequestContext(c))

+                                          .Subscribe(obs))

+                             .Repeat()

+                             .Retry()

+                             .Publish()

+                             .RefCount();

+        }

+        public void Dispose()

+        {

+            listener.Stop();

+        }

+

+        public IDisposable Subscribe(IObserver<RequestContext> observer)

+        {

+            return stream.Subscribe(observer);

+        }

+    }

+}
\ No newline at end of file
diff --git a/MediaBrowser.Common/Net/Request.cs b/MediaBrowser.Common/Net/Request.cs
new file mode 100644
index 0000000000..795c9c36ba
--- /dev/null
+++ b/MediaBrowser.Common/Net/Request.cs
@@ -0,0 +1,18 @@
+using System.Collections.Generic;

+using System.IO;

+using System.Linq;

+

+namespace MediaBrowser.Common.Net

+{

+    public class Request

+    {

+        public string HttpMethod { get; set; }

+        public IDictionary<string, IEnumerable<string>> Headers { get; set; }

+        public Stream InputStream { get; set; }

+        public string RawUrl { get; set; }

+        public int ContentLength

+        {

+            get { return int.Parse(Headers["Content-Length"].First()); }

+        }

+    }

+}
\ No newline at end of file
diff --git a/MediaBrowser.Common/Net/RequestContext.cs b/MediaBrowser.Common/Net/RequestContext.cs
new file mode 100644
index 0000000000..5c7a6b99f0
--- /dev/null
+++ b/MediaBrowser.Common/Net/RequestContext.cs
@@ -0,0 +1,118 @@
+using System;

+using System.Linq;

+using System.Net;

+using MediaBrowser.Common.Net.Handlers;

+

+namespace MediaBrowser.Common.Net

+{

+    public class RequestContext

+    {

+        public HttpListenerRequest Request { get; private set; }

+        public HttpListenerResponse Response { get; private set; }

+

+        public string LocalPath

+        {

+            get

+            {

+                return Request.Url.LocalPath;

+            }

+        }

+

+        public RequestContext(HttpListenerContext context)

+        {

+            Response = context.Response;

+            Request = context.Request;

+        }

+

+        public void Respond(BaseHandler handler)

+        {

+            Response.AddHeader("Access-Control-Allow-Origin", "*");

+

+            Response.KeepAlive = true;

+            

+            foreach (var header in handler.Headers)

+            {

+                Response.AddHeader(header.Key, header.Value);

+            }

+

+            int statusCode = handler.StatusCode;

+            Response.ContentType = handler.ContentType;

+

+            TimeSpan cacheDuration = handler.CacheDuration;

+

+            if (Request.Headers.AllKeys.Contains("If-Modified-Since"))

+            {

+                DateTime ifModifiedSince;

+

+                if (DateTime.TryParse(Request.Headers["If-Modified-Since"].Replace(" GMT", string.Empty), out ifModifiedSince))

+                {

+                    // If the cache hasn't expired yet just return a 304

+                    if (IsCacheValid(ifModifiedSince, cacheDuration, handler.LastDateModified))

+                    {

+                        statusCode = 304;

+                    }

+                }

+            }

+

+            Response.SendChunked = true;

+            Response.StatusCode = statusCode;

+

+            if (statusCode != 304)

+            {

+                if (handler.GzipResponse)

+                {

+                    Response.AddHeader("Content-Encoding", "gzip");

+                }

+

+                if (cacheDuration.Ticks > 0)

+                {

+                    CacheResponse(Response, cacheDuration, handler.LastDateModified);

+                }

+                handler.WriteStream(Response.OutputStream);

+            }

+            else

+            {

+                Response.OutputStream.Flush();

+                Response.OutputStream.Close();

+            }

+        }

+

+        private void CacheResponse(HttpListenerResponse response, TimeSpan duration, DateTime? dateModified)

+        {

+            DateTime lastModified = dateModified ?? DateTime.Now;

+

+            response.Headers[HttpResponseHeader.CacheControl] = "Public";

+            response.Headers[HttpResponseHeader.Expires] = DateTime.Now.Add(duration).ToString("r");

+            response.Headers[HttpResponseHeader.LastModified] = lastModified.ToString("r");

+        }

+

+        private bool IsCacheValid(DateTime ifModifiedSince, TimeSpan cacheDuration, DateTime? dateModified)

+        {

+            if (dateModified.HasValue)

+            {

+                DateTime lastModified = NormalizeDateForComparison(dateModified.Value);

+                ifModifiedSince = NormalizeDateForComparison(ifModifiedSince);

+

+                return lastModified <= ifModifiedSince;

+            }

+

+            DateTime cacheExpirationDate = ifModifiedSince.Add(cacheDuration);

+

+            if (DateTime.Now < cacheExpirationDate)

+            {

+                return true;

+            }

+

+            return false;

+        }

+

+        /// <summary>

+        /// When the browser sends the IfModifiedDate, it's precision is limited to seconds, so this will account for that

+        /// </summary>

+        private DateTime NormalizeDateForComparison(DateTime date)

+        {

+            return new DateTime(date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second);

+        }

+

+    }

+}
\ No newline at end of file
diff --git a/MediaBrowser.Common/Net/StreamExtensions.cs b/MediaBrowser.Common/Net/StreamExtensions.cs
new file mode 100644
index 0000000000..c10e458ada
--- /dev/null
+++ b/MediaBrowser.Common/Net/StreamExtensions.cs
@@ -0,0 +1,19 @@
+using System;

+using System.IO;

+using System.Reactive.Linq;

+

+namespace MediaBrowser.Common.Net

+{

+    public static class StreamExtensions

+    {

+        public static IObservable<byte[]> ReadBytes(this Stream stream, int count)

+        {

+            var buffer = new byte[count];

+            return Observable.FromAsyncPattern((cb, state) => stream.BeginRead(buffer, 0, count, cb, state), ar =>

+            {

+                stream.EndRead(ar);

+                return buffer;

+            })();

+        }

+    }

+}
\ No newline at end of file