8c42b69817mcp/sse: add support to provide for options for SSE transport - Add SSEOptions struct to define SSE handler options. - Update Signature of NewSSEHandler to accept SSEOptions [braking change] - Update unit test - Update example test Fixes https://github.com/modelcontextprotocol/go-sdk/issues/507, https://github.com/modelcontextprotocol/go-sdk/issues/503
70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
|
|
// Use of this source code is governed by an MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
"fmt"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
|
|
"github.com/modelcontextprotocol/go-sdk/mcp"
|
|
)
|
|
|
|
var (
|
|
host = flag.String("host", "localhost", "host to listen on")
|
|
port = flag.String("port", "8080", "port to listen on")
|
|
)
|
|
|
|
type SayHiParams struct {
|
|
Name string `json:"name"`
|
|
}
|
|
|
|
func SayHi(ctx context.Context, req *mcp.CallToolRequest, args SayHiParams) (*mcp.CallToolResult, any, error) {
|
|
return &mcp.CallToolResult{
|
|
Content: []mcp.Content{
|
|
&mcp.TextContent{Text: "Hi " + args.Name},
|
|
},
|
|
}, nil, nil
|
|
}
|
|
|
|
func main() {
|
|
flag.Usage = func() {
|
|
fmt.Fprintf(os.Stderr, "Usage: %s [options]\n\n", os.Args[0])
|
|
fmt.Fprintf(os.Stderr, "This program runs MCP servers over SSE HTTP.\n\n")
|
|
fmt.Fprintf(os.Stderr, "Options:\n")
|
|
flag.PrintDefaults()
|
|
fmt.Fprintf(os.Stderr, "\nEndpoints:\n")
|
|
fmt.Fprintf(os.Stderr, " /greeter1 - Greeter 1 service\n")
|
|
fmt.Fprintf(os.Stderr, " /greeter2 - Greeter 2 service\n")
|
|
os.Exit(1)
|
|
}
|
|
flag.Parse()
|
|
|
|
addr := fmt.Sprintf("%s:%s", *host, *port)
|
|
|
|
server1 := mcp.NewServer(&mcp.Implementation{Name: "greeter1"}, nil)
|
|
mcp.AddTool(server1, &mcp.Tool{Name: "greet1", Description: "say hi"}, SayHi)
|
|
|
|
server2 := mcp.NewServer(&mcp.Implementation{Name: "greeter2"}, nil)
|
|
mcp.AddTool(server2, &mcp.Tool{Name: "greet2", Description: "say hello"}, SayHi)
|
|
|
|
log.Printf("MCP servers serving at %s", addr)
|
|
handler := mcp.NewSSEHandler(func(request *http.Request) *mcp.Server {
|
|
url := request.URL.Path
|
|
log.Printf("Handling request for URL %s\n", url)
|
|
switch url {
|
|
case "/greeter1":
|
|
return server1
|
|
case "/greeter2":
|
|
return server2
|
|
default:
|
|
return nil
|
|
}
|
|
}, nil)
|
|
log.Fatal(http.ListenAndServe(addr, handler))
|
|
}
|