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Decouple Handlers and Collections from protocol types (#765)

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* Decouple Handlers and Collections (e.g. ToolsHandler and ToolsCollection) from Capabilities by promoting them to the options types.

Also, group all handlers in container classes, for server, I decided to move McpServerHandlers down to Mcp.Core and move the NotificationHandlers there too.

Also, Fix ListResourceTemplatesHandler issue.

* Add remarks for empty protocol capability types

* Keep JsonIgnore properties and mark them as Obsolete

* Continue supporting Obsolete members

* Update Obsolete messages to indicate the member will be removed

* Add EditorBrowsable Never to the remaining obsolete members
This commit is contained in:
David Cantú 2025-09-24 09:42:03 -05:00 • committed by GitHub
commit 5f992994c3
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1 changed files with 1588 additions and 1161 deletions
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13
src/ModelContextProtocol.Core/Protocol/ElicitationCapability.cs
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@ -1,4 +1,6 @@
using System.ComponentModel;
using System.Text.Json.Serialization;
using ModelContextProtocol.Client;
namespace ModelContextProtocol.Protocol;
@ -11,13 +13,16 @@ namespace ModelContextProtocol.Protocol;
/// </para>
/// <para>
/// When this capability is enabled, an MCP server can request the client to provide additional information
/// during interactions. The client must set a <see cref="ElicitationHandler"/> to process these requests.
/// during interactions. The client must set a <see cref="ModelContextProtocol.Client.McpClientHandlers.ElicitationHandler"/> to process these requests.
/// </para>
/// <para>
/// This class is intentionally empty as the Model Context Protocol specification does not
/// currently define additional properties for sampling capabilities. Future versions of the
/// specification may extend this capability with additional configuration options.
/// </para>
/// </remarks>
public sealed class ElicitationCapability
{
// Currently empty in the spec, but may be extended in the future.
/// <summary>
/// Gets or sets the handler for processing <see cref="RequestMethods.ElicitationCreate"/> requests.
/// </summary>
@ -32,5 +37,7 @@ public sealed class ElicitationCapability
/// </para>
/// </remarks>
[JsonIgnore]
[Obsolete($"Use {nameof(McpClientOptions.Handlers.ElicitationHandler)} instead. This member will be removed in a subsequent release.")] // See: https://github.com/modelcontextprotocol/csharp-sdk/issues/774
[EditorBrowsable(EditorBrowsableState.Never)]
public Func<ElicitRequestParams?, CancellationToken, ValueTask<ElicitResult>>? ElicitationHandler { get; set; }
}