diff options
| author | LukePulverenti Luke Pulverenti luke pulverenti <LukePulverenti Luke Pulverenti luke.pulverenti@gmail.com> | 2012-07-12 23:50:50 -0400 |
|---|---|---|
| committer | LukePulverenti Luke Pulverenti luke pulverenti <LukePulverenti Luke Pulverenti luke.pulverenti@gmail.com> | 2012-07-12 23:50:50 -0400 |
| commit | 5f5f2838b1931a2cf426b778755a417cc662b46f (patch) | |
| tree | 007597d0ba7bc2d992f909c9876744d80cc31b42 /MediaBrowser.Common/Net/RequestContext.cs | |
| parent | 572103cdfe9fdf15ac881a104537047b3ca928ea (diff) | |
moved the http server to common, added more http handlers
Diffstat (limited to 'MediaBrowser.Common/Net/RequestContext.cs')
| -rw-r--r-- | MediaBrowser.Common/Net/RequestContext.cs | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/MediaBrowser.Common/Net/RequestContext.cs b/MediaBrowser.Common/Net/RequestContext.cs new file mode 100644 index 000000000..9a21b473d --- /dev/null +++ b/MediaBrowser.Common/Net/RequestContext.cs @@ -0,0 +1,103 @@ +using System;
+using System.Linq;
+using System.Net;
+
+namespace MediaBrowser.Common.Net
+{
+ public class RequestContext
+ {
+ public HttpListenerRequest Request { get; private set; }
+ public HttpListenerResponse Response { get; private set; }
+
+ public RequestContext(HttpListenerContext context)
+ {
+ Response = context.Response;
+ Request = context.Request;
+ }
+
+ public void Respond(Response handler)
+ {
+ Response.AddHeader("Access-Control-Allow-Origin", "*");
+
+ 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 (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 |