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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Net.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.TestHost;
using Microsoft.Net.Http.Headers;
namespace Microsoft.AspNetCore.ResponseCaching.Tests;
public class ResponseCachingTests
{
[Theory]
[InlineData("GET")]
[InlineData("HEAD")]
public async Task ServesCachedContent_IfAvailable(string method)
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Theory]
[InlineData("GET")]
[InlineData("HEAD")]
public async Task ServesFreshContent_IfNotAvailable(string method)
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest(method, "different"));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_Post()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.PostAsync("", new StringContent(string.Empty));
var subsequentResponse = await client.PostAsync("", new StringContent(string.Empty));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_Head_Get()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var subsequentResponse = await client.SendAsync(new HttpRequestMessage(HttpMethod.Head, ""));
var initialResponse = await client.SendAsync(new HttpRequestMessage(HttpMethod.Get, ""));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_Get_Head()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(new HttpRequestMessage(HttpMethod.Get, ""));
var subsequentResponse = await client.SendAsync(new HttpRequestMessage(HttpMethod.Head, ""));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Theory]
[InlineData("GET")]
[InlineData("HEAD")]
public async Task ServesFreshContent_If_CacheControlNoCache(string method)
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
// verify the response is cached
var cachedResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
await AssertCachedResponseAsync(initialResponse, cachedResponse);
// assert cached response no longer served
client.DefaultRequestHeaders.CacheControl =
new System.Net.Http.Headers.CacheControlHeaderValue { NoCache = true };
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Theory]
[InlineData("GET")]
[InlineData("HEAD")]
public async Task ServesFreshContent_If_PragmaNoCache(string method)
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
// verify the response is cached
var cachedResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
await AssertCachedResponseAsync(initialResponse, cachedResponse);
// assert cached response no longer served
client.DefaultRequestHeaders.Pragma.Clear();
client.DefaultRequestHeaders.Pragma.Add(new System.Net.Http.Headers.NameValueHeaderValue("no-cache"));
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Theory]
[InlineData("GET")]
[InlineData("HEAD")]
public async Task ServesCachedContent_If_PathCasingDiffers(string method)
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(TestUtils.CreateRequest(method, "path"));
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest(method, "PATH"));
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Theory]
[InlineData("GET")]
[InlineData("HEAD")]
public async Task ServesFreshContent_If_ResponseExpired(string method)
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(TestUtils.CreateRequest(method, "?Expires=0"));
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Theory]
[InlineData("GET")]
[InlineData("HEAD")]
public async Task ServesFreshContent_If_Authorization_HeaderExists(string method)
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("abc");
var initialResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest(method, ""));
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfVaryHeader_Matches()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.Headers.Vary = HeaderNames.From);
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.From = "user@example.com";
var initialResponse = await client.GetAsync("");
var subsequentResponse = await client.GetAsync("");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfVaryHeader_Mismatches()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.Headers.Vary = HeaderNames.From);
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.From = "user@example.com";
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.From = "user2@example.com";
var subsequentResponse = await client.GetAsync("");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfVaryQueryKeys_Matches()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "query" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?query=value");
var subsequentResponse = await client.GetAsync("?query=value");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfVaryQueryKeysExplicit_Matches_QueryKeyCaseInsensitive()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "QueryA", "queryb" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?querya=valuea&queryb=valueb");
var subsequentResponse = await client.GetAsync("?QueryA=valuea&QueryB=valueb");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfVaryQueryKeyStar_Matches_QueryKeyCaseInsensitive()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "*" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?querya=valuea&queryb=valueb");
var subsequentResponse = await client.GetAsync("?QueryA=valuea&QueryB=valueb");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfVaryQueryKeyExplicit_Matches_OrderInsensitive()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "QueryB", "QueryA" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?QueryA=ValueA&QueryB=ValueB");
var subsequentResponse = await client.GetAsync("?QueryB=ValueB&QueryA=ValueA");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfVaryQueryKeyStar_Matches_OrderInsensitive()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "*" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?QueryA=ValueA&QueryB=ValueB");
var subsequentResponse = await client.GetAsync("?QueryB=ValueB&QueryA=ValueA");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfVaryQueryKey_Mismatches()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "query" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?query=value");
var subsequentResponse = await client.GetAsync("?query=value2");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfVaryQueryKeyExplicit_Mismatch_QueryKeyCaseSensitive()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "QueryA", "QueryB" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?querya=valuea&queryb=valueb");
var subsequentResponse = await client.GetAsync("?querya=ValueA&queryb=ValueB");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfVaryQueryKeyStar_Mismatch_QueryKeyValueCaseSensitive()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Features.Get<IResponseCachingFeature>().VaryByQueryKeys = new[] { "*" });
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?querya=valuea&queryb=valueb");
var subsequentResponse = await client.GetAsync("?querya=ValueA&queryb=ValueB");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfRequestRequirements_NotMet()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.CacheControl = new System.Net.Http.Headers.CacheControlHeaderValue()
{
MaxAge = TimeSpan.FromSeconds(0)
};
var subsequentResponse = await client.GetAsync("");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task Serves504_IfOnlyIfCachedHeader_IsSpecified()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.CacheControl = new System.Net.Http.Headers.CacheControlHeaderValue()
{
OnlyIfCached = true
};
var subsequentResponse = await client.GetAsync("/different");
initialResponse.EnsureSuccessStatusCode();
Assert.Equal(System.Net.HttpStatusCode.GatewayTimeout, subsequentResponse.StatusCode);
}
}
}
[Fact]
public async Task ServesFreshContent_IfSetCookie_IsSpecified()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.Headers.SetCookie = "cookieName=cookieValue");
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
var subsequentResponse = await client.GetAsync("");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfSubsequentRequestContainsNoStore()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.CacheControl = new System.Net.Http.Headers.CacheControlHeaderValue()
{
NoStore = true
};
var subsequentResponse = await client.GetAsync("");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfInitialRequestContainsNoStore()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.CacheControl = new System.Net.Http.Headers.CacheControlHeaderValue()
{
NoStore = true
};
var initialResponse = await client.GetAsync("");
var subsequentResponse = await client.GetAsync("");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfInitialResponseContainsNoStore()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.Headers.CacheControl = CacheControlHeaderValue.NoStoreString);
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
var subsequentResponse = await client.GetAsync("");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task Serves304_IfIfModifiedSince_Satisfied()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context =>
{
context.Response.GetTypedHeaders().ETag = new EntityTagHeaderValue("\"E1\"");
context.Response.Headers.ContentLocation = "/";
context.Response.Headers.Vary = HeaderNames.From;
});
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?Expires=90");
client.DefaultRequestHeaders.IfModifiedSince = DateTimeOffset.MaxValue;
var subsequentResponse = await client.GetAsync("");
initialResponse.EnsureSuccessStatusCode();
Assert.Equal(System.Net.HttpStatusCode.NotModified, subsequentResponse.StatusCode);
Assert304Headers(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfIfModifiedSince_NotSatisfied()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.IfModifiedSince = DateTimeOffset.MinValue;
var subsequentResponse = await client.GetAsync("");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task Serves304_IfIfNoneMatch_Satisfied()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context =>
{
context.Response.GetTypedHeaders().ETag = new EntityTagHeaderValue("\"E1\"");
context.Response.Headers.ContentLocation = "/";
context.Response.Headers.Vary = HeaderNames.From;
});
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("?Expires=90");
client.DefaultRequestHeaders.IfNoneMatch.Add(new System.Net.Http.Headers.EntityTagHeaderValue("\"E1\""));
var subsequentResponse = await client.GetAsync("");
initialResponse.EnsureSuccessStatusCode();
Assert.Equal(System.Net.HttpStatusCode.NotModified, subsequentResponse.StatusCode);
Assert304Headers(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfIfNoneMatch_NotSatisfied()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.GetTypedHeaders().ETag = new EntityTagHeaderValue("\"E1\""));
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.IfNoneMatch.Add(new System.Net.Http.Headers.EntityTagHeaderValue("\"E2\""));
var subsequentResponse = await client.GetAsync("");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfBodySize_IsCacheable()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(options: new ResponseCachingOptions()
{
MaximumBodySize = 100
});
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
var subsequentResponse = await client.GetAsync("");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfBodySize_IsNotCacheable()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(options: new ResponseCachingOptions()
{
MaximumBodySize = 1
});
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("");
var subsequentResponse = await client.GetAsync("/different");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_CaseSensitivePaths_IsNotCacheable()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(options: new ResponseCachingOptions()
{
UseCaseSensitivePaths = true
});
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.GetAsync("/path");
var subsequentResponse = await client.GetAsync("/Path");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_WithoutReplacingCachedVaryBy_OnCacheMiss()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.Headers.Vary = HeaderNames.From);
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.From = "user@example.com";
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.From = "user2@example.com";
var otherResponse = await client.GetAsync("");
client.DefaultRequestHeaders.From = "user@example.com";
var subsequentResponse = await client.GetAsync("");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesFreshContent_IfCachedVaryByUpdated_OnCacheMiss()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.Headers.Vary = context.Request.Headers.Pragma);
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.From = "user@example.com";
client.DefaultRequestHeaders.Pragma.Clear();
client.DefaultRequestHeaders.Pragma.Add(new System.Net.Http.Headers.NameValueHeaderValue("From"));
client.DefaultRequestHeaders.MaxForwards = 1;
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.From = "user2@example.com";
client.DefaultRequestHeaders.Pragma.Clear();
client.DefaultRequestHeaders.Pragma.Add(new System.Net.Http.Headers.NameValueHeaderValue("Max-Forwards"));
client.DefaultRequestHeaders.MaxForwards = 2;
var otherResponse = await client.GetAsync("");
client.DefaultRequestHeaders.From = "user@example.com";
client.DefaultRequestHeaders.Pragma.Clear();
client.DefaultRequestHeaders.Pragma.Add(new System.Net.Http.Headers.NameValueHeaderValue("From"));
client.DefaultRequestHeaders.MaxForwards = 1;
var subsequentResponse = await client.GetAsync("");
await AssertFreshResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfCachedVaryByNotUpdated_OnCacheMiss()
{
var builders = TestUtils.CreateBuildersWithResponseCaching(contextAction: context => context.Response.Headers.Vary = context.Request.Headers.Pragma);
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.From = "user@example.com";
client.DefaultRequestHeaders.Pragma.Clear();
client.DefaultRequestHeaders.Pragma.Add(new System.Net.Http.Headers.NameValueHeaderValue("From"));
client.DefaultRequestHeaders.MaxForwards = 1;
var initialResponse = await client.GetAsync("");
client.DefaultRequestHeaders.From = "user2@example.com";
client.DefaultRequestHeaders.Pragma.Clear();
client.DefaultRequestHeaders.Pragma.Add(new System.Net.Http.Headers.NameValueHeaderValue("From"));
client.DefaultRequestHeaders.MaxForwards = 2;
var otherResponse = await client.GetAsync("");
client.DefaultRequestHeaders.From = "user@example.com";
client.DefaultRequestHeaders.Pragma.Clear();
client.DefaultRequestHeaders.Pragma.Add(new System.Net.Http.Headers.NameValueHeaderValue("From"));
client.DefaultRequestHeaders.MaxForwards = 1;
var subsequentResponse = await client.GetAsync("");
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
[Fact]
public async Task ServesCachedContent_IfAvailable_UsingHead_WithContentLength()
{
var builders = TestUtils.CreateBuildersWithResponseCaching();
foreach (var builder in builders)
{
using var host = builder.Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
var initialResponse = await client.SendAsync(TestUtils.CreateRequest("HEAD", "?contentLength=10"));
var subsequentResponse = await client.SendAsync(TestUtils.CreateRequest("HEAD", "?contentLength=10"));
await AssertCachedResponseAsync(initialResponse, subsequentResponse);
}
}
}
private static void Assert304Headers(HttpResponseMessage initialResponse, HttpResponseMessage subsequentResponse)
{
// https://tools.ietf.org/html/rfc7232#section-4.1
// The server generating a 304 response MUST generate any of the
// following header fields that would have been sent in a 200 (OK)
// response to the same request: Cache-Control, Content-Location, Date,
// ETag, Expires, and Vary.
Assert.Equal(initialResponse.Headers.CacheControl, subsequentResponse.Headers.CacheControl);
Assert.Equal(initialResponse.Content.Headers.ContentLocation, subsequentResponse.Content.Headers.ContentLocation);
Assert.Equal(initialResponse.Headers.Date, subsequentResponse.Headers.Date);
Assert.Equal(initialResponse.Headers.ETag, subsequentResponse.Headers.ETag);
Assert.Equal(initialResponse.Content.Headers.Expires, subsequentResponse.Content.Headers.Expires);
Assert.Equal(initialResponse.Headers.Vary, subsequentResponse.Headers.Vary);
}
private static async Task AssertCachedResponseAsync(HttpResponseMessage initialResponse, HttpResponseMessage subsequentResponse)
{
initialResponse.EnsureSuccessStatusCode();
subsequentResponse.EnsureSuccessStatusCode();
foreach (var header in initialResponse.Headers)
{
Assert.Equal(initialResponse.Headers.GetValues(header.Key), subsequentResponse.Headers.GetValues(header.Key));
}
Assert.True(subsequentResponse.Headers.Contains(HeaderNames.Age));
Assert.Equal(await initialResponse.Content.ReadAsStringAsync(), await subsequentResponse.Content.ReadAsStringAsync());
}
private static async Task AssertFreshResponseAsync(HttpResponseMessage initialResponse, HttpResponseMessage subsequentResponse)
{
initialResponse.EnsureSuccessStatusCode();
subsequentResponse.EnsureSuccessStatusCode();
Assert.False(subsequentResponse.Headers.Contains(HeaderNames.Age));
if (initialResponse.RequestMessage.Method == HttpMethod.Head &&
subsequentResponse.RequestMessage.Method == HttpMethod.Head)
{
Assert.True(initialResponse.Headers.Contains("X-Value"));
Assert.NotEqual(initialResponse.Headers.GetValues("X-Value"), subsequentResponse.Headers.GetValues("X-Value"));
}
else
{
Assert.NotEqual(await initialResponse.Content.ReadAsStringAsync(), await subsequentResponse.Content.ReadAsStringAsync());
}
}
}
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