|
|
|
|
@ -1,808 +0,0 @@
|
|
|
|
|
using MediaBrowser.Common.Extensions;
|
|
|
|
|
using MediaBrowser.Common.Kernel;
|
|
|
|
|
using System;
|
|
|
|
|
using System.Collections;
|
|
|
|
|
using System.Collections.Generic;
|
|
|
|
|
using System.Collections.Specialized;
|
|
|
|
|
using System.Globalization;
|
|
|
|
|
using System.IO;
|
|
|
|
|
using System.IO.Compression;
|
|
|
|
|
using System.Linq;
|
|
|
|
|
using System.Net;
|
|
|
|
|
using System.Text;
|
|
|
|
|
using System.Threading.Tasks;
|
|
|
|
|
|
|
|
|
|
namespace MediaBrowser.Common.Net.Handlers
|
|
|
|
|
{
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Class BaseHandler
|
|
|
|
|
/// </summary>
|
|
|
|
|
public abstract class BaseHandler<TKernelType> : IHttpServerHandler
|
|
|
|
|
where TKernelType : IKernel
|
|
|
|
|
{
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Initializes the specified kernel.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="kernel">The kernel.</param>
|
|
|
|
|
public void Initialize(IKernel kernel)
|
|
|
|
|
{
|
|
|
|
|
Kernel = (TKernelType)kernel;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets the kernel.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The kernel.</value>
|
|
|
|
|
protected TKernelType Kernel { get; private set; }
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets the URL suffix used to determine if this handler can process a request.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The URL suffix.</value>
|
|
|
|
|
protected virtual string UrlSuffix
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
var name = GetType().Name;
|
|
|
|
|
|
|
|
|
|
const string srch = "Handler";
|
|
|
|
|
|
|
|
|
|
if (name.EndsWith(srch, StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
name = name.Substring(0, name.Length - srch.Length);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return "api/" + name;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Handleses the request.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="request">The request.</param>
|
|
|
|
|
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
|
|
|
|
|
public virtual bool HandlesRequest(HttpListenerRequest request)
|
|
|
|
|
{
|
|
|
|
|
var name = '/' + UrlSuffix.TrimStart('/');
|
|
|
|
|
|
|
|
|
|
var url = Kernel.WebApplicationName + name;
|
|
|
|
|
|
|
|
|
|
return request.Url.LocalPath.EndsWith(url, StringComparison.OrdinalIgnoreCase);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets the compressed stream.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The compressed stream.</value>
|
|
|
|
|
private Stream CompressedStream { get; set; }
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets a value indicating whether [use chunked encoding].
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value><c>null</c> if [use chunked encoding] contains no value, <c>true</c> if [use chunked encoding]; otherwise, <c>false</c>.</value>
|
|
|
|
|
public virtual bool? UseChunkedEncoding
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// The original HttpListenerContext
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The HTTP listener context.</value>
|
|
|
|
|
protected HttpListenerContext HttpListenerContext { get; set; }
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// The _query string
|
|
|
|
|
/// </summary>
|
|
|
|
|
private NameValueCollection _queryString;
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// The original QueryString
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The query string.</value>
|
|
|
|
|
public NameValueCollection QueryString
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
// HttpListenerContext.Request.QueryString is not decoded properly
|
|
|
|
|
return _queryString;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// The _requested ranges
|
|
|
|
|
/// </summary>
|
|
|
|
|
private List<KeyValuePair<long, long?>> _requestedRanges;
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets the requested ranges.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The requested ranges.</value>
|
|
|
|
|
protected IEnumerable<KeyValuePair<long, long?>> RequestedRanges
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
if (_requestedRanges == null)
|
|
|
|
|
{
|
|
|
|
|
_requestedRanges = new List<KeyValuePair<long, long?>>();
|
|
|
|
|
|
|
|
|
|
if (IsRangeRequest)
|
|
|
|
|
{
|
|
|
|
|
// Example: bytes=0-,32-63
|
|
|
|
|
var ranges = HttpListenerContext.Request.Headers["Range"].Split('=')[1].Split(',');
|
|
|
|
|
|
|
|
|
|
foreach (var range in ranges)
|
|
|
|
|
{
|
|
|
|
|
var vals = range.Split('-');
|
|
|
|
|
|
|
|
|
|
long start = 0;
|
|
|
|
|
long? end = null;
|
|
|
|
|
|
|
|
|
|
if (!string.IsNullOrEmpty(vals[0]))
|
|
|
|
|
{
|
|
|
|
|
start = long.Parse(vals[0]);
|
|
|
|
|
}
|
|
|
|
|
if (!string.IsNullOrEmpty(vals[1]))
|
|
|
|
|
{
|
|
|
|
|
end = long.Parse(vals[1]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
_requestedRanges.Add(new KeyValuePair<long, long?>(start, end));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return _requestedRanges;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets a value indicating whether this instance is range request.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value><c>true</c> if this instance is range request; otherwise, <c>false</c>.</value>
|
|
|
|
|
protected bool IsRangeRequest
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
return HttpListenerContext.Request.Headers.AllKeys.Contains("Range");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets a value indicating whether [client supports compression].
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value><c>true</c> if [client supports compression]; otherwise, <c>false</c>.</value>
|
|
|
|
|
protected bool ClientSupportsCompression
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
var enc = HttpListenerContext.Request.Headers["Accept-Encoding"] ?? string.Empty;
|
|
|
|
|
|
|
|
|
|
return enc.Equals("*", StringComparison.OrdinalIgnoreCase) ||
|
|
|
|
|
enc.IndexOf("deflate", StringComparison.OrdinalIgnoreCase) != -1 ||
|
|
|
|
|
enc.IndexOf("gzip", StringComparison.OrdinalIgnoreCase) != -1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets the compression method.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The compression method.</value>
|
|
|
|
|
private string CompressionMethod
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
var enc = HttpListenerContext.Request.Headers["Accept-Encoding"] ?? string.Empty;
|
|
|
|
|
|
|
|
|
|
if (enc.IndexOf("deflate", StringComparison.OrdinalIgnoreCase) != -1 || enc.Equals("*", StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
return "deflate";
|
|
|
|
|
}
|
|
|
|
|
if (enc.IndexOf("gzip", StringComparison.OrdinalIgnoreCase) != -1)
|
|
|
|
|
{
|
|
|
|
|
return "gzip";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Processes the request.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="ctx">The CTX.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
|
|
|
|
public virtual async Task ProcessRequest(HttpListenerContext ctx)
|
|
|
|
|
{
|
|
|
|
|
HttpListenerContext = ctx;
|
|
|
|
|
|
|
|
|
|
ctx.Response.AddHeader("Access-Control-Allow-Origin", "*");
|
|
|
|
|
|
|
|
|
|
ctx.Response.KeepAlive = true;
|
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
await ProcessRequestInternal(ctx).ConfigureAwait(false);
|
|
|
|
|
}
|
|
|
|
|
catch (InvalidOperationException ex)
|
|
|
|
|
{
|
|
|
|
|
HandleException(ctx.Response, ex, 422);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
catch (ResourceNotFoundException ex)
|
|
|
|
|
{
|
|
|
|
|
HandleException(ctx.Response, ex, 404);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
catch (FileNotFoundException ex)
|
|
|
|
|
{
|
|
|
|
|
HandleException(ctx.Response, ex, 404);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
catch (DirectoryNotFoundException ex)
|
|
|
|
|
{
|
|
|
|
|
HandleException(ctx.Response, ex, 404);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
catch (UnauthorizedAccessException ex)
|
|
|
|
|
{
|
|
|
|
|
HandleException(ctx.Response, ex, 401);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
catch (ArgumentException ex)
|
|
|
|
|
{
|
|
|
|
|
HandleException(ctx.Response, ex, 400);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
{
|
|
|
|
|
HandleException(ctx.Response, ex, 500);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
finally
|
|
|
|
|
{
|
|
|
|
|
DisposeResponseStream();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Appends the error message.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="response">The response.</param>
|
|
|
|
|
/// <param name="ex">The ex.</param>
|
|
|
|
|
/// <param name="statusCode">The status code.</param>
|
|
|
|
|
private void HandleException(HttpListenerResponse response, Exception ex, int statusCode)
|
|
|
|
|
{
|
|
|
|
|
response.StatusCode = statusCode;
|
|
|
|
|
|
|
|
|
|
response.Headers.Add("Status", statusCode.ToString(new CultureInfo("en-US")));
|
|
|
|
|
|
|
|
|
|
response.Headers.Remove("Age");
|
|
|
|
|
response.Headers.Remove("Expires");
|
|
|
|
|
response.Headers.Remove("Cache-Control");
|
|
|
|
|
response.Headers.Remove("Etag");
|
|
|
|
|
response.Headers.Remove("Last-Modified");
|
|
|
|
|
|
|
|
|
|
response.ContentType = "text/plain";
|
|
|
|
|
|
|
|
|
|
//Logger.ErrorException("Error processing request", ex);
|
|
|
|
|
|
|
|
|
|
if (!string.IsNullOrEmpty(ex.Message))
|
|
|
|
|
{
|
|
|
|
|
response.AddHeader("X-Application-Error-Code", ex.Message);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var bytes = Encoding.UTF8.GetBytes(ex.Message);
|
|
|
|
|
|
|
|
|
|
var stream = CompressedStream ?? response.OutputStream;
|
|
|
|
|
|
|
|
|
|
// This could fail, but try to add the stack trace as the body content
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
stream.Write(bytes, 0, bytes.Length);
|
|
|
|
|
}
|
|
|
|
|
catch (Exception ex1)
|
|
|
|
|
{
|
|
|
|
|
//Logger.ErrorException("Error dumping stack trace", ex1);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Processes the request internal.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="ctx">The CTX.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
|
|
|
|
private async Task ProcessRequestInternal(HttpListenerContext ctx)
|
|
|
|
|
{
|
|
|
|
|
var responseInfo = await GetResponseInfo().ConfigureAwait(false);
|
|
|
|
|
|
|
|
|
|
// Let the client know if byte range requests are supported or not
|
|
|
|
|
if (responseInfo.SupportsByteRangeRequests)
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.Headers["Accept-Ranges"] = "bytes";
|
|
|
|
|
}
|
|
|
|
|
else if (!responseInfo.SupportsByteRangeRequests)
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.Headers["Accept-Ranges"] = "none";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (responseInfo.IsResponseValid && responseInfo.SupportsByteRangeRequests && IsRangeRequest)
|
|
|
|
|
{
|
|
|
|
|
// Set the initial status code
|
|
|
|
|
// When serving a range request, we need to return status code 206 to indicate a partial response body
|
|
|
|
|
responseInfo.StatusCode = 206;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ctx.Response.ContentType = responseInfo.ContentType;
|
|
|
|
|
|
|
|
|
|
if (responseInfo.Etag.HasValue)
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.Headers["ETag"] = responseInfo.Etag.Value.ToString("N");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var isCacheValid = true;
|
|
|
|
|
|
|
|
|
|
// Validate If-Modified-Since
|
|
|
|
|
if (ctx.Request.Headers.AllKeys.Contains("If-Modified-Since"))
|
|
|
|
|
{
|
|
|
|
|
DateTime ifModifiedSince;
|
|
|
|
|
|
|
|
|
|
if (DateTime.TryParse(ctx.Request.Headers["If-Modified-Since"], out ifModifiedSince))
|
|
|
|
|
{
|
|
|
|
|
isCacheValid = IsCacheValid(ifModifiedSince.ToUniversalTime(), responseInfo.CacheDuration,
|
|
|
|
|
responseInfo.DateLastModified);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Validate If-None-Match
|
|
|
|
|
if (isCacheValid &&
|
|
|
|
|
(responseInfo.Etag.HasValue || !string.IsNullOrEmpty(ctx.Request.Headers["If-None-Match"])))
|
|
|
|
|
{
|
|
|
|
|
Guid ifNoneMatch;
|
|
|
|
|
|
|
|
|
|
if (Guid.TryParse(ctx.Request.Headers["If-None-Match"] ?? string.Empty, out ifNoneMatch))
|
|
|
|
|
{
|
|
|
|
|
if (responseInfo.Etag.HasValue && responseInfo.Etag.Value == ifNoneMatch)
|
|
|
|
|
{
|
|
|
|
|
responseInfo.StatusCode = 304;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
LogResponse(ctx, responseInfo);
|
|
|
|
|
|
|
|
|
|
if (responseInfo.IsResponseValid)
|
|
|
|
|
{
|
|
|
|
|
await OnProcessingRequest(responseInfo).ConfigureAwait(false);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (responseInfo.IsResponseValid)
|
|
|
|
|
{
|
|
|
|
|
await ProcessUncachedRequest(ctx, responseInfo).ConfigureAwait(false);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if (responseInfo.StatusCode == 304)
|
|
|
|
|
{
|
|
|
|
|
AddAgeHeader(ctx.Response, responseInfo);
|
|
|
|
|
AddExpiresHeader(ctx.Response, responseInfo);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ctx.Response.StatusCode = responseInfo.StatusCode;
|
|
|
|
|
ctx.Response.SendChunked = false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// The _null task result
|
|
|
|
|
/// </summary>
|
|
|
|
|
private readonly Task<bool> _nullTaskResult = Task.FromResult(true);
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Called when [processing request].
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
|
|
|
|
protected virtual Task OnProcessingRequest(ResponseInfo responseInfo)
|
|
|
|
|
{
|
|
|
|
|
return _nullTaskResult;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Logs the response.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="ctx">The CTX.</param>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
private void LogResponse(HttpListenerContext ctx, ResponseInfo responseInfo)
|
|
|
|
|
{
|
|
|
|
|
// Don't log normal 200's
|
|
|
|
|
if (responseInfo.StatusCode == 200)
|
|
|
|
|
{
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var log = new StringBuilder();
|
|
|
|
|
|
|
|
|
|
log.AppendLine(string.Format("Url: {0}", ctx.Request.Url));
|
|
|
|
|
|
|
|
|
|
log.AppendLine("Headers: " + string.Join(",", ctx.Response.Headers.AllKeys.Select(k => k + "=" + ctx.Response.Headers[k])));
|
|
|
|
|
|
|
|
|
|
var msg = "Http Response Sent (" + responseInfo.StatusCode + ") to " + ctx.Request.RemoteEndPoint;
|
|
|
|
|
|
|
|
|
|
if (Kernel.Configuration.EnableHttpLevelLogging)
|
|
|
|
|
{
|
|
|
|
|
//Logger.LogMultiline(msg, LogSeverity.Debug, log);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Processes the uncached request.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="ctx">The CTX.</param>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
|
|
|
|
private async Task ProcessUncachedRequest(HttpListenerContext ctx, ResponseInfo responseInfo)
|
|
|
|
|
{
|
|
|
|
|
var totalContentLength = GetTotalContentLength(responseInfo);
|
|
|
|
|
|
|
|
|
|
// By default, use chunked encoding if we don't know the content length
|
|
|
|
|
var useChunkedEncoding = UseChunkedEncoding == null ? (totalContentLength == null) : UseChunkedEncoding.Value;
|
|
|
|
|
|
|
|
|
|
// Don't force this to true. HttpListener will default it to true if supported by the client.
|
|
|
|
|
if (!useChunkedEncoding)
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.SendChunked = false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Set the content length, if we know it
|
|
|
|
|
if (totalContentLength.HasValue)
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.ContentLength64 = totalContentLength.Value;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var compressResponse = responseInfo.CompressResponse && ClientSupportsCompression;
|
|
|
|
|
|
|
|
|
|
// Add the compression header
|
|
|
|
|
if (compressResponse)
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.AddHeader("Content-Encoding", CompressionMethod);
|
|
|
|
|
ctx.Response.AddHeader("Vary", "Accept-Encoding");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Don't specify both last modified and Etag, unless caching unconditionally. They are redundant
|
|
|
|
|
// https://developers.google.com/speed/docs/best-practices/caching#LeverageBrowserCaching
|
|
|
|
|
if (responseInfo.DateLastModified.HasValue && (!responseInfo.Etag.HasValue || responseInfo.CacheDuration.Ticks > 0))
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.Headers[HttpResponseHeader.LastModified] = responseInfo.DateLastModified.Value.ToString("r");
|
|
|
|
|
AddAgeHeader(ctx.Response, responseInfo);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Add caching headers
|
|
|
|
|
ConfigureCaching(ctx.Response, responseInfo);
|
|
|
|
|
|
|
|
|
|
// Set the status code
|
|
|
|
|
ctx.Response.StatusCode = responseInfo.StatusCode;
|
|
|
|
|
|
|
|
|
|
if (responseInfo.IsResponseValid)
|
|
|
|
|
{
|
|
|
|
|
// Finally, write the response data
|
|
|
|
|
var outputStream = ctx.Response.OutputStream;
|
|
|
|
|
|
|
|
|
|
if (compressResponse)
|
|
|
|
|
{
|
|
|
|
|
if (CompressionMethod.Equals("deflate", StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
CompressedStream = new DeflateStream(outputStream, CompressionLevel.Fastest, true);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
CompressedStream = new GZipStream(outputStream, CompressionLevel.Fastest, true);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
outputStream = CompressedStream;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
await WriteResponseToOutputStream(outputStream, responseInfo, totalContentLength).ConfigureAwait(false);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
ctx.Response.SendChunked = false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Configures the caching.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="response">The response.</param>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
private void ConfigureCaching(HttpListenerResponse response, ResponseInfo responseInfo)
|
|
|
|
|
{
|
|
|
|
|
if (responseInfo.CacheDuration.Ticks > 0)
|
|
|
|
|
{
|
|
|
|
|
response.Headers[HttpResponseHeader.CacheControl] = "public, max-age=" + Convert.ToInt32(responseInfo.CacheDuration.TotalSeconds);
|
|
|
|
|
}
|
|
|
|
|
else if (responseInfo.Etag.HasValue)
|
|
|
|
|
{
|
|
|
|
|
response.Headers[HttpResponseHeader.CacheControl] = "public";
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
response.Headers[HttpResponseHeader.CacheControl] = "no-cache, no-store, must-revalidate";
|
|
|
|
|
response.Headers[HttpResponseHeader.Pragma] = "no-cache, no-store, must-revalidate";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
AddExpiresHeader(response, responseInfo);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Adds the expires header.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="response">The response.</param>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
private void AddExpiresHeader(HttpListenerResponse response, ResponseInfo responseInfo)
|
|
|
|
|
{
|
|
|
|
|
if (responseInfo.CacheDuration.Ticks > 0)
|
|
|
|
|
{
|
|
|
|
|
response.Headers[HttpResponseHeader.Expires] = DateTime.UtcNow.Add(responseInfo.CacheDuration).ToString("r");
|
|
|
|
|
}
|
|
|
|
|
else if (!responseInfo.Etag.HasValue)
|
|
|
|
|
{
|
|
|
|
|
response.Headers[HttpResponseHeader.Expires] = "-1";
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Adds the age header.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="response">The response.</param>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
private void AddAgeHeader(HttpListenerResponse response, ResponseInfo responseInfo)
|
|
|
|
|
{
|
|
|
|
|
if (responseInfo.DateLastModified.HasValue)
|
|
|
|
|
{
|
|
|
|
|
response.Headers[HttpResponseHeader.Age] = Convert.ToInt32((DateTime.UtcNow - responseInfo.DateLastModified.Value).TotalSeconds).ToString(CultureInfo.InvariantCulture);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Writes the response to output stream.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="stream">The stream.</param>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
/// <param name="contentLength">Length of the content.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
|
|
|
|
protected abstract Task WriteResponseToOutputStream(Stream stream, ResponseInfo responseInfo, long? contentLength);
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Disposes the response stream.
|
|
|
|
|
/// </summary>
|
|
|
|
|
protected virtual void DisposeResponseStream()
|
|
|
|
|
{
|
|
|
|
|
if (CompressedStream != null)
|
|
|
|
|
{
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
CompressedStream.Dispose();
|
|
|
|
|
}
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
{
|
|
|
|
|
//Logger.ErrorException("Error disposing compressed stream", ex);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
//HttpListenerContext.Response.OutputStream.Dispose();
|
|
|
|
|
HttpListenerContext.Response.Close();
|
|
|
|
|
}
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
{
|
|
|
|
|
//Logger.ErrorException("Error disposing response", ex);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Determines whether [is cache valid] [the specified if modified since].
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="ifModifiedSince">If modified since.</param>
|
|
|
|
|
/// <param name="cacheDuration">Duration of the cache.</param>
|
|
|
|
|
/// <param name="dateModified">The date modified.</param>
|
|
|
|
|
/// <returns><c>true</c> if [is cache valid] [the specified if modified since]; otherwise, <c>false</c>.</returns>
|
|
|
|
|
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.UtcNow < 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>
|
|
|
|
|
/// <param name="date">The date.</param>
|
|
|
|
|
/// <returns>DateTime.</returns>
|
|
|
|
|
private DateTime NormalizeDateForComparison(DateTime date)
|
|
|
|
|
{
|
|
|
|
|
return new DateTime(date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second, date.Kind);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets the total length of the content.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="responseInfo">The response info.</param>
|
|
|
|
|
/// <returns>System.Nullable{System.Int64}.</returns>
|
|
|
|
|
protected virtual long? GetTotalContentLength(ResponseInfo responseInfo)
|
|
|
|
|
{
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets the response info.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <returns>Task{ResponseInfo}.</returns>
|
|
|
|
|
protected abstract Task<ResponseInfo> GetResponseInfo();
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets a bool query string param.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="name">The name.</param>
|
|
|
|
|
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
|
|
|
|
|
protected bool GetBoolQueryStringParam(string name)
|
|
|
|
|
{
|
|
|
|
|
var val = QueryString[name] ?? string.Empty;
|
|
|
|
|
|
|
|
|
|
return val.Equals("1", StringComparison.OrdinalIgnoreCase) || val.Equals("true", StringComparison.OrdinalIgnoreCase);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// The _form values
|
|
|
|
|
/// </summary>
|
|
|
|
|
private Hashtable _formValues;
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets a value from form POST data
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="name">The name.</param>
|
|
|
|
|
/// <returns>Task{System.String}.</returns>
|
|
|
|
|
protected async Task<string> GetFormValue(string name)
|
|
|
|
|
{
|
|
|
|
|
if (_formValues == null)
|
|
|
|
|
{
|
|
|
|
|
_formValues = await GetFormValues(HttpListenerContext.Request).ConfigureAwait(false);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (_formValues.ContainsKey(name))
|
|
|
|
|
{
|
|
|
|
|
return _formValues[name].ToString();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Extracts form POST data from a request
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="request">The request.</param>
|
|
|
|
|
/// <returns>Task{Hashtable}.</returns>
|
|
|
|
|
private async Task<Hashtable> GetFormValues(HttpListenerRequest request)
|
|
|
|
|
{
|
|
|
|
|
var formVars = new Hashtable();
|
|
|
|
|
|
|
|
|
|
if (request.HasEntityBody)
|
|
|
|
|
{
|
|
|
|
|
if (request.ContentType.IndexOf("application/x-www-form-urlencoded", StringComparison.OrdinalIgnoreCase) != -1)
|
|
|
|
|
{
|
|
|
|
|
using (var requestBody = request.InputStream)
|
|
|
|
|
{
|
|
|
|
|
using (var reader = new StreamReader(requestBody, request.ContentEncoding))
|
|
|
|
|
{
|
|
|
|
|
var s = await reader.ReadToEndAsync().ConfigureAwait(false);
|
|
|
|
|
|
|
|
|
|
var pairs = s.Split('&');
|
|
|
|
|
|
|
|
|
|
foreach (var pair in pairs)
|
|
|
|
|
{
|
|
|
|
|
var index = pair.IndexOf('=');
|
|
|
|
|
|
|
|
|
|
if (index != -1)
|
|
|
|
|
{
|
|
|
|
|
var name = pair.Substring(0, index);
|
|
|
|
|
var value = pair.Substring(index + 1);
|
|
|
|
|
formVars.Add(name, value);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return formVars;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Class ResponseInfo
|
|
|
|
|
/// </summary>
|
|
|
|
|
public class ResponseInfo
|
|
|
|
|
{
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets the type of the content.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The type of the content.</value>
|
|
|
|
|
public string ContentType { get; set; }
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets the etag.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The etag.</value>
|
|
|
|
|
public Guid? Etag { get; set; }
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets the date last modified.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The date last modified.</value>
|
|
|
|
|
public DateTime? DateLastModified { get; set; }
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets the duration of the cache.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The duration of the cache.</value>
|
|
|
|
|
public TimeSpan CacheDuration { get; set; }
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets a value indicating whether [compress response].
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value><c>true</c> if [compress response]; otherwise, <c>false</c>.</value>
|
|
|
|
|
public bool CompressResponse { get; set; }
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets the status code.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value>The status code.</value>
|
|
|
|
|
public int StatusCode { get; set; }
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets or sets a value indicating whether [supports byte range requests].
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value><c>true</c> if [supports byte range requests]; otherwise, <c>false</c>.</value>
|
|
|
|
|
public bool SupportsByteRangeRequests { get; set; }
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Initializes a new instance of the <see cref="ResponseInfo" /> class.
|
|
|
|
|
/// </summary>
|
|
|
|
|
public ResponseInfo()
|
|
|
|
|
{
|
|
|
|
|
CacheDuration = TimeSpan.FromTicks(0);
|
|
|
|
|
|
|
|
|
|
CompressResponse = true;
|
|
|
|
|
|
|
|
|
|
StatusCode = 200;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets a value indicating whether this instance is response valid.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <value><c>true</c> if this instance is response valid; otherwise, <c>false</c>.</value>
|
|
|
|
|
public bool IsResponseValid
|
|
|
|
|
{
|
|
|
|
|
get
|
|
|
|
|
{
|
|
|
|
|
return StatusCode >= 200 && StatusCode < 300;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
LukePulverenti
11 years ago