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Pass session id's to MCP endpoints. (#466)

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* Pass session id's to MCP endpoints.

* Update src/ModelContextProtocol/Client/McpClient.cs

Co-authored-by: Stephen Halter <halter73@gmail.com>

* Update src/ModelContextProtocol.AspNetCore/StreamableHttpHandler.cs

Co-authored-by: Stephen Halter <halter73@gmail.com>

* Make init callback asynchronous.

* Address feedback.

---------

Co-authored-by: Stephen Halter <halter73@gmail.com>
This commit is contained in:
Eirik Tsarpalis 2025-06-12 16:56:57 +02:00 • committed by GitHub
commit d7d9eab3f8
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1 changed files with 166 additions and 21 deletions
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src/ModelContextProtocol.Core/Server/StreamableHttpServerTransport.cs
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@ -46,15 +46,18 @@ public sealed class StreamableHttpServerTransport : ITransport
public bool Stateless { get; init; }
/// <summary>
/// Gets the initialize request if it was received by <see cref="HandlePostRequest(IDuplexPipe, CancellationToken)"/> and <see cref="Stateless"/> is set to <see langword="true"/>.
/// Gets or sets a callback to be invoked before handling the initialize request.
/// </summary>
public InitializeRequestParams? InitializeRequest { get; internal set; }
public Func<InitializeRequestParams?, ValueTask>? OnInitRequestReceived { get; set; }
/// <inheritdoc/>
public ChannelReader<JsonRpcMessage> MessageReader => _incomingChannel.Reader;
internal ChannelWriter<JsonRpcMessage> MessageWriter => _incomingChannel.Writer;
/// <inheritdoc/>
public string? SessionId { get; set; }
/// <summary>
/// Handles an optional SSE GET request a client using the Streamable HTTP transport might make by
/// writing any unsolicited JSON-RPC messages sent via <see cref="SendMessageAsync"/>