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Implement MCP task support (SEP-1686) (#1170)

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Co-authored-by: Stephen Halter <halter73@gmail.com>
This commit is contained in:
Eirik Tsarpalis 2026-01-28 05:21:02 +02:00 • committed by GitHub
commit 10e4f5b20f
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1 changed files with 11580 additions and 46 deletions
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34
tests/ModelContextProtocol.TestSseServer/Program.cs
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@ -150,6 +150,27 @@ public class Program
"required": ["prompt", "maxTokens"]
}
"""),
},
new Tool
{
Name = "longRunning",
Description = "Simulates a long-running operation that supports task-based execution.",
InputSchema = JsonElement.Parse("""
{
"type": "object",
"properties": {
"durationMs": {
"type": "number",
"description": "Duration of the operation in milliseconds"
}
},
"required": ["durationMs"]
}
"""),
Execution = new ToolExecution
{
TaskSupport = ToolTaskSupport.Optional
}
}
]
};
@ -194,6 +215,19 @@ public class Program
Content = [new TextContentBlock { Text = $"LLM sampling result: {sampleResult.Content.OfType<TextContentBlock>().FirstOrDefault()?.Text}" }]
};
}
else if (request.Params.Name == "longRunning")
{
if (request.Params.Arguments is null || !request.Params.Arguments.TryGetValue("durationMs", out var durationMsValue))
{
throw new McpProtocolException("Missing required argument 'durationMs'", McpErrorCode.InvalidParams);
}
int durationMs = Convert.ToInt32(durationMsValue.ToString());
await Task.Delay(durationMs, cancellationToken);
return new CallToolResult
{
Content = [new TextContentBlock { Text = $"Long-running operation completed after {durationMs}ms" }]
};
}
else
{
throw new McpProtocolException($"Unknown tool: '{request.Params.Name}'", McpErrorCode.InvalidParams);