private static async Task <ResponseHandlerResult> WriteResponseInCacheAsync(HttpResponseBase httpResponse, CacheItem cacheItem) { await cacheItem.Response.WriteResponseAsync(httpResponse); httpResponse.Headers.Set("Last-Modified", cacheItem.CachedUtcTimestamp.ToHttpDate()); return(ResponseHandlerResult.ResponseWritten()); }
public async Task <ResponseHandlerResult> HandleResponseAsync(HttpContextBase context, IResponse suggestedResponse, ICache cache, string cacheKey) { context.ThrowIfNull("context"); suggestedResponse.ThrowIfNull("suggestedResponse"); await new CacheResponse(suggestedResponse).WriteResponseAsync(context.Response); return(ResponseHandlerResult.ResponseWritten()); }
public void SetUp() { _handler = new NonCacheableResponseHandler(); _httpRequest = MockRepository.GenerateMock<HttpRequestBase>(); _httpCachePolicyBase = MockRepository.GenerateMock<HttpCachePolicyBase>(); _httpResponse = MockRepository.GenerateMock<HttpResponseBase>(); _httpResponse.Stub(arg => arg.BinaryWrite(Arg<byte[]>.Is.Anything)).WhenCalled(arg => _responseWritten = true); _httpResponse.Stub(arg => arg.Cache).Return(_httpCachePolicyBase); _cachePolicy = MockRepository.GenerateMock<ICachePolicy>(); _cachePolicy.Stub(arg => arg.Clone()).Return(_cachePolicy); _response = MockRepository.GenerateMock<IResponse>(); _response.Stub(arg => arg.CachePolicy).Return(_cachePolicy); _response.Stub(arg => arg.Cookies).Return(Enumerable.Empty<Cookie>()); _response.Stub(arg => arg.GetContent()).Return(new byte[0]); _response.Stub(arg => arg.Headers).Return(Enumerable.Empty<Header>()); _response.Stub(arg => arg.StatusCode).Return(new StatusAndSubStatusCode(HttpStatusCode.OK)); _cache = MockRepository.GenerateMock<ICache>(); _result = _handler.HandleResponse(_httpRequest, _httpResponse, _response, _cache, "key"); }
public async Task <ResponseHandlerResult> HandleResponseAsync(HttpContextBase context, IResponse suggestedResponse, ICache cache, string cacheKey) { context.ThrowIfNull("context"); suggestedResponse.ThrowIfNull("suggestedResponse"); StatusAndSubStatusCode statusCode = suggestedResponse.StatusCode; if (!_statusCodes.Contains(statusCode)) { return(ResponseHandlerResult.ResponseNotHandled()); } AcceptHeader[] acceptHeaders = AcceptHeader.ParseMany(context.Request.Headers["Accept"]).ToArray(); if (acceptHeaders.Any() && !acceptHeaders.Any(arg => arg.MediaTypeMatches("text/html"))) { return(ResponseHandlerResult.ResponseNotHandled()); } const string format = @"<!DOCTYPE html> <html> <head> <title>{0}</title> <style>h1 {{ margin: 0; padding: 0; }}</style> </head> <body> <h1>{0}</h1> <hr/> HTTP {1}{2} </body> </html>"; Response response = new Response(statusCode) .TextHtml() .Content(String.Format(format, statusCode.StatusDescription, statusCode.StatusCode, statusCode.SubStatusCode == 0 ? "" : "." + statusCode.SubStatusCode)); response.CachePolicy.NoClientCaching(); await new CacheResponse(response).WriteResponseAsync(context.Response); context.Response.TrySkipIisCustomErrors = true; return(ResponseHandlerResult.ResponseWritten()); }
public async Task <ResponseHandlerResult> HandleResponseAsync(HttpContextBase context, IResponse suggestedResponse, ICache cache, string cacheKey) { context.ThrowIfNull("context"); suggestedResponse.ThrowIfNull("suggestedResponse"); StatusAndSubStatusCode statusCode = suggestedResponse.StatusCode; if (!_statusCodes.Contains(statusCode)) { return(ResponseHandlerResult.ResponseNotHandled()); } AcceptHeader[] acceptHeaders = AcceptHeader.ParseMany(context.Request.Headers["Accept"]).ToArray(); if (acceptHeaders.Any() && !acceptHeaders.Any(arg => arg.MediaTypeMatches("text/plain"))) { return(ResponseHandlerResult.ResponseNotHandled()); } string content = String.Format( "HTTP {0}{1} {2}", statusCode.StatusCode, statusCode.SubStatusCode == 0 ? "" : "." + statusCode.SubStatusCode.ToString(CultureInfo.InvariantCulture), statusCode.StatusDescription.Length > 0 ? String.Format("({0})", statusCode.StatusDescription) : ""); Response response = new Response(statusCode) .TextPlain() .Content(content); response.CachePolicy.NoClientCaching(); await new CacheResponse(response).WriteResponseAsync(context.Response); context.Response.TrySkipIisCustomErrors = true; return(ResponseHandlerResult.ResponseWritten()); }
public async Task <ResponseHandlerResult> HandleResponseAsync(HttpContextBase context, IResponse suggestedResponse, ICache cache, string cacheKey) { context.ThrowIfNull("context"); suggestedResponse.ThrowIfNull("suggestedResponse"); if (!suggestedResponse.CachePolicy.HasPolicy || cache == null || cacheKey == null) { return(ResponseHandlerResult.ResponseNotHandled()); } CacheItem cacheItem = await cache.GetAsync(cacheKey); string responseETag = suggestedResponse.CachePolicy.ETag; #region If-Match precondition header IfMatchHeader[] ifMatchHeaders = IfMatchHeader.ParseMany(context.Request.Headers["If-Match"]).ToArray(); // Only consider If-Match headers if response status code is 2xx or 412 if (ifMatchHeaders.Any() && ((suggestedResponse.StatusCode.StatusCode >= 200 && suggestedResponse.StatusCode.StatusCode <= 299) || suggestedResponse.StatusCode.StatusCode == 412)) { // Return 412 if no If-Match header matches the response ETag // Return 412 if an "If-Match: *" header is present and the response has no ETag if (ifMatchHeaders.All(arg => arg.EntityTag.Value != responseETag) || (responseETag == null && ifMatchHeaders.Any(arg => arg.EntityTag.Value == "*"))) { return(await WriteResponseAsync(context.Response, new Response().PreconditionFailed())); } } #endregion #region If-None-Match precondition header IfNoneMatchHeader[] ifNoneMatchHeaders = IfNoneMatchHeader.ParseMany(context.Request.Headers["If-None-Match"]).ToArray(); if (ifNoneMatchHeaders.Any()) { // Return 304 if an If-None-Match header matches the response ETag and the request method was GET or HEAD // Return 304 if an "If-None-Match: *" header is present, the response has an ETag and the request method was GET or HEAD // Return 412 if an "If-None-Match: *" header is present, the response has an ETag and the request method was not GET or HEAD if (ifNoneMatchHeaders.Any(arg => arg.EntityTag.Value == responseETag) || (ifNoneMatchHeaders.Any(arg => arg.EntityTag.Value == "*") && responseETag != null)) { if (String.Equals(context.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase) || String.Equals(context.Request.HttpMethod, "HEAD", StringComparison.OrdinalIgnoreCase)) { if (cacheItem != null) { cacheItem.Response.CachePolicy.Apply(context.Response.Cache); } else { suggestedResponse.CachePolicy.Apply(context.Response.Cache); } return(await WriteResponseAsync(context.Response, new Response().NotModified())); } return(await WriteResponseAsync(context.Response, new Response().PreconditionFailed())); } } #endregion #region If-Modified-Since precondition header IfModifiedSinceHeader ifModifiedSinceHeader = IfModifiedSinceHeader.Parse(context.Request.Headers["If-Modified-Since"]); bool validIfModifiedSinceHttpDate = ifModifiedSinceHeader != null && ifModifiedSinceHeader.HttpDate <= _systemClock.UtcDateTime; // Only consider an If-Modified-Since header if response status code is 200 and the HTTP-date is valid if (suggestedResponse.StatusCode.ParsedStatusCode == HttpStatusCode.OK && validIfModifiedSinceHttpDate) { // Return 304 if the response was cached before the HTTP-date if (cacheItem != null && cacheItem.CachedUtcTimestamp < ifModifiedSinceHeader.HttpDate) { return(await WriteResponseAsync(context.Response, new Response().NotModified())); } } #endregion #region If-Unmodified-Since precondition header IfUnmodifiedSinceHeader ifUnmodifiedSinceHeader = IfUnmodifiedSinceHeader.Parse(context.Request.Headers["If-Unmodified-Since"]); bool validIfUnmodifiedSinceHttpDate = ifUnmodifiedSinceHeader != null && ifUnmodifiedSinceHeader.HttpDate <= _systemClock.UtcDateTime; // Only consider an If-Unmodified-Since header if response status code is 2xx or 412 and the HTTP-date is valid if (((suggestedResponse.StatusCode.StatusCode >= 200 && suggestedResponse.StatusCode.StatusCode <= 299) || suggestedResponse.StatusCode.StatusCode == 412) && validIfUnmodifiedSinceHttpDate) { // Return 412 if the previous response was removed from the cache or was cached again at a later time if (cacheItem == null || cacheItem.CachedUtcTimestamp >= ifUnmodifiedSinceHeader.HttpDate) { return(await WriteResponseAsync(context.Response, new Response().PreconditionFailed())); } } #endregion #region No server caching // Do not cache the response when the response sends a non-cacheable status code, or when an Authorization header is present if (!_cacheableStatusCodes.Contains(suggestedResponse.StatusCode) || context.Request.Headers["Authorization"] != null) { return(await WriteResponseAsync(context.Response, suggestedResponse)); } CacheControlHeader cacheControlHeader = CacheControlHeader.Parse(context.Request.Headers["Cache-Control"]); // Do not cache the response if a "Cache-Control: no-cache" or "Cache-Control: no-store" header is present if (cacheControlHeader != null && (cacheControlHeader.NoCache || cacheControlHeader.NoStore)) { return(await WriteResponseAsync(context.Response, suggestedResponse)); } IEnumerable <PragmaHeader> pragmaHeader = PragmaHeader.ParseMany(context.Request.Headers["Pragma"]); // Do not cache the response if a "Pragma: no-cache" header is present if (pragmaHeader.Any(arg => String.Equals(arg.Name, "no-cache", StringComparison.OrdinalIgnoreCase))) { return(await WriteResponseAsync(context.Response, suggestedResponse)); } #endregion // Return 504 if the response has not been cached but the client is requesting to receive only a cached response if (cacheItem == null && cacheControlHeader != null && cacheControlHeader.OnlyIfCached) { return(await WriteResponseAsync(context.Response, new Response().GatewayTimeout())); } if (cacheItem != null) { // Write the cached response if no Cache-Control header is present // Write the cached response if a "Cache-Control: max-age" header is validated // Write the cached response if a "Cache-Control: max-stale" header is validated // Write the cached response if a "Cache-Control: min-fresh" header is validated if (cacheControlHeader == null || _systemClock.UtcDateTime - cacheItem.CachedUtcTimestamp <= cacheControlHeader.MaxAge || cacheControlHeader.OnlyIfCached || cacheItem.ExpiresUtcTimestamp == null || _systemClock.UtcDateTime - cacheItem.ExpiresUtcTimestamp.Value <= cacheControlHeader.MaxStale || cacheItem.ExpiresUtcTimestamp.Value - _systemClock.UtcDateTime < cacheControlHeader.MinFresh) { return(await WriteResponseInCacheAsync(context.Response, cacheItem)); } } bool cacheOnServer = suggestedResponse.CachePolicy.AllowsServerCaching; var cacheResponse = new CacheResponse(suggestedResponse); if (cacheOnServer) { DateTime expirationUtcTimestamp = suggestedResponse.CachePolicy.ServerCacheExpirationUtcTimestamp != null ? suggestedResponse.CachePolicy.ServerCacheExpirationUtcTimestamp.Value : _systemClock.UtcDateTime + suggestedResponse.CachePolicy.ServerCacheMaxAge.Value; await cache.AddAsync(cacheKey, cacheResponse, expirationUtcTimestamp); } return(await WriteResponseAsync(context.Response, cacheResponse)); }
private static async Task <ResponseHandlerResult> WriteResponseAsync(HttpResponseBase httpResponse, CacheResponse cacheResponse) { await cacheResponse.WriteResponseAsync(httpResponse); return(ResponseHandlerResult.ResponseWritten()); }
public void SetUp() { _result = ResponseHandlerResult.ResponseWritten(); }
public void SetUp() { _response = MockRepository.GenerateMock<IResponse>(); _result = ResponseHandlerResult.ResponseSuggested(_response); }
public void SetUp() { _result = ResponseHandlerResult.ResponseNotHandled(); }