dae88535baSupport stateless streamable sessions by adding a GetSessionID function to StreamableHTTPOptions. If GetSessionID returns "", the session is stateless, and no validation is performed. This is implemented by providing the session a trivial initialization state. To implement this, some parts of #232 (distributed sessions) are copied over, since they add an API for creating an already-initialized session. In total, the following new API is added: - StreamableHTTPOptions.GetSessionID - ServerSessionOptions (a new parameter to Server.Connect) - ServerSessionState - ClientSessionOptions (a new parameter to Client.Connect, for symmetry) For #10
74 lines
2 KiB
Go
74 lines
2 KiB
Go
// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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package mcp_test
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import (
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"context"
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"fmt"
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"log"
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"github.com/modelcontextprotocol/go-sdk/mcp"
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)
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type SayHiParams struct {
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Name string `json:"name"`
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}
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func SayHi(ctx context.Context, cc *mcp.ServerSession, params *mcp.CallToolParamsFor[SayHiParams]) (*mcp.CallToolResultFor[any], error) {
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return &mcp.CallToolResultFor[any]{
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Content: []mcp.Content{
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&mcp.TextContent{Text: "Hi " + params.Arguments.Name},
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},
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}, nil
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}
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func ExampleServer() {
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ctx := context.Background()
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clientTransport, serverTransport := mcp.NewInMemoryTransports()
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server := mcp.NewServer(&mcp.Implementation{Name: "greeter", Version: "v0.0.1"}, nil)
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mcp.AddTool(server, &mcp.Tool{Name: "greet", Description: "say hi"}, SayHi)
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serverSession, err := server.Connect(ctx, serverTransport, nil)
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if err != nil {
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log.Fatal(err)
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}
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client := mcp.NewClient(&mcp.Implementation{Name: "client"}, nil)
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clientSession, err := client.Connect(ctx, clientTransport, nil)
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if err != nil {
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log.Fatal(err)
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}
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res, err := clientSession.CallTool(ctx, &mcp.CallToolParams{
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Name: "greet",
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Arguments: map[string]any{"name": "user"},
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})
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println(res.Content[0].(*mcp.TextContent).Text)
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clientSession.Close()
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serverSession.Wait()
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// Output: Hi user
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}
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// createSessions creates and connects an in-memory client and server session for testing purposes.
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func createSessions(ctx context.Context) (*mcp.ClientSession, *mcp.ServerSession, *mcp.Server) {
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server := mcp.NewServer(testImpl, nil)
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client := mcp.NewClient(testImpl, nil)
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serverTransport, clientTransport := mcp.NewInMemoryTransports()
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serverSession, err := server.Connect(ctx, serverTransport, nil)
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if err != nil {
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log.Fatal(err)
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}
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clientSession, err := client.Connect(ctx, clientTransport, nil)
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if err != nil {
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log.Fatal(err)
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}
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return clientSession, serverSession, server
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}
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