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Streamable HTTP resumability + redelivery + SSE polling via server-side disconnect (#1077)

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Co-authored-by: Stephen Halter <halter73@gmail.com>
This commit is contained in:
Mackinnon Buck 2026-01-14 22:54:25 -08:00 • committed by GitHub
commit b8311756b4
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1 changed files with 2675 additions and 246 deletions
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71
tests/ModelContextProtocol.AspNetCore.Tests/MapMcpStreamableHttpTests.cs
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@ -283,4 +283,75 @@ public class MapMcpStreamableHttpTests(ITestOutputHelper outputHelper) : MapMcpT
Assert.Equal(1, runSessionCount);
}
[Fact]
public async Task EnablePollingAsync_ThrowsInvalidOperationException_InStatelessMode()
{
Assert.SkipUnless(Stateless, "This test only applies to stateless mode.");
InvalidOperationException? capturedException = null;
var pollingTool = McpServerTool.Create(async (RequestContext<CallToolRequestParams> context) =>
{
try
{
await context.EnablePollingAsync(retryInterval: TimeSpan.FromSeconds(1));
}
catch (InvalidOperationException ex)
{
capturedException = ex;
}
return "Complete";
}, options: new() { Name = "polling_tool" });
Builder.Services.AddMcpServer().WithHttpTransport(ConfigureStateless).WithTools([pollingTool]);
await using var app = Builder.Build();
app.MapMcp();
await app.StartAsync(TestContext.Current.CancellationToken);
await using var mcpClient = await ConnectAsync();
await mcpClient.CallToolAsync("polling_tool", cancellationToken: TestContext.Current.CancellationToken);
Assert.NotNull(capturedException);
Assert.Contains("stateless", capturedException.Message, StringComparison.OrdinalIgnoreCase);
}
[Fact]
public async Task EnablePollingAsync_ThrowsInvalidOperationException_WhenNoEventStreamStoreConfigured()
{
Assert.SkipWhen(Stateless, "This test only applies to stateful mode without an event stream store.");
InvalidOperationException? capturedException = null;
var pollingTool = McpServerTool.Create(async (RequestContext<CallToolRequestParams> context) =>
{
try
{
await context.EnablePollingAsync(retryInterval: TimeSpan.FromSeconds(1));
}
catch (InvalidOperationException ex)
{
capturedException = ex;
}
return "Complete";
}, options: new() { Name = "polling_tool" });
// Configure without EventStreamStore
Builder.Services.AddMcpServer().WithHttpTransport(ConfigureStateless).WithTools([pollingTool]);
await using var app = Builder.Build();
app.MapMcp();
await app.StartAsync(TestContext.Current.CancellationToken);
await using var mcpClient = await ConnectAsync();
await mcpClient.CallToolAsync("polling_tool", cancellationToken: TestContext.Current.CancellationToken);
Assert.NotNull(capturedException);
Assert.Contains("event stream store", capturedException.Message, StringComparison.OrdinalIgnoreCase);
}
}