public void Must_parse_correctly(object[] parameters) { var headerValue = (string)parameters[0]; var entityTags = new List <EntityTag>(); for (int i = 1; i < parameters.Length; i += 2) { entityTags.Add(new EntityTag((string)parameters[i], (bool)parameters[i + 1])); } IEnumerable <IfNoneMatchHeader> headers = IfNoneMatchHeader.ParseMany(headerValue); Assert.That(headers.Select(arg => arg.EntityTag), Is.EquivalentTo(entityTags)); }
public IRequestHeader Parse(System.Net.Http.Headers.HttpRequestHeaders HttpRequestHeaders) { IEnumerable <string> IfNoneExist; if (HttpRequestHeaders.TryGetValues(_IfNoneExistHeader, out IfNoneExist)) { this.IfNoneExist = IfNoneExist.FirstOrDefault(); } IEnumerable <string> IfModifiedSince; if (HttpRequestHeaders.TryGetValues(_IfModifiedSinceHeader, out IfModifiedSince)) { this.IfModifiedSince = IfModifiedSince.FirstOrDefault(); } IEnumerable <string> IfNoneMatchHeader; if (HttpRequestHeaders.TryGetValues(_IfNoneMatchHeader, out IfNoneMatchHeader)) { this.IfNoneMatch = IfNoneMatchHeader.FirstOrDefault(); } IEnumerable <string> IfMatchHeader; if (HttpRequestHeaders.TryGetValues(_IfMatchHeader, out IfMatchHeader)) { this.IfMatch = IfMatchHeader.FirstOrDefault(); } IEnumerable <string> PreferHeader; if (HttpRequestHeaders.TryGetValues(_PreferHeader, out PreferHeader)) { this.Prefer.Set(PreferHeader.FirstOrDefault()); } return(this); }
public void IfNoneMatchAllStarTest() { var matcher = IfNoneMatchHeader.Parse("*"); Assert.All(_entityTags, etag => Assert.False(matcher.IsMatch(etag))); }
public void IfNoneMatchAllEmptyTest() { var matcher = IfNoneMatchHeader.Parse(string.Empty); Assert.All(_entityTags, etag => Assert.False(matcher.IsMatch(etag))); }
public void IfNoneMatchNoneTest() { var matcher = IfNoneMatchHeader.Parse("\"qweqwe\""); Assert.Equal(3, _entityTags.Count(etag => matcher.IsMatch(etag))); }
public void IfNoneMatchOtherTest() { var matcher = IfNoneMatchHeader.Parse("\"asd\""); Assert.Equal(2, _entityTags.Count(etag => matcher.IsMatch(etag))); }
public void IfNoneMatchWeakTest() { var matcher = IfNoneMatchHeader.Parse("w/\"qwe\"", EntityTagComparer.Weak); Assert.Equal(1, _entityTags.Count(etag => matcher.IsMatch(etag))); }
public void IfNoneMatchWeakWithStrongCompareTest() { var matcher = IfNoneMatchHeader.Parse("w/\"qwe\""); Assert.Equal(3, _entityTags.Count(etag => matcher.IsMatch(etag))); }
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)); }
public void Must_not_result_in_header(string headerValue) { Assert.That(IfNoneMatchHeader.ParseMany(headerValue), Is.Empty); }