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|
| import { createMcpExpressApp } from "@modelcontextprotocol/sdk/server/express.js"; |
| import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; |
| import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js"; |
| import cors from "cors"; |
| import type { Request, Response } from "express"; |
|
|
| export interface ServerOptions { |
| port: number; |
| name?: string; |
| } |
|
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| |
| |
| |
| |
| |
| export async function startServer( |
| createServer: () => McpServer, |
| options: ServerOptions, |
| ): Promise<void> { |
| const { port, name = "MCP Server" } = options; |
|
|
| const app = createMcpExpressApp({ host: "0.0.0.0" }); |
| app.use(cors()); |
|
|
| app.all("/mcp", async (req: Request, res: Response) => { |
| const server = createServer(); |
| const transport = new StreamableHTTPServerTransport({ |
| sessionIdGenerator: undefined, |
| }); |
|
|
| res.on("close", () => { |
| transport.close().catch(() => {}); |
| server.close().catch(() => {}); |
| }); |
|
|
| try { |
| await server.connect(transport); |
| await transport.handleRequest(req, res, req.body); |
| } catch (error) { |
| console.error("MCP error:", error); |
| if (!res.headersSent) { |
| res.status(500).json({ |
| jsonrpc: "2.0", |
| error: { code: -32603, message: "Internal server error" }, |
| id: null, |
| }); |
| } |
| } |
| }); |
|
|
| const httpServer = app.listen(port, (err) => { |
| if (err) { |
| console.error("Failed to start server:", err); |
| process.exit(1); |
| } |
| console.log(`${name} listening on http://localhost:${port}/mcp`); |
| }); |
|
|
| const shutdown = () => { |
| console.log("\nShutting down..."); |
| httpServer.close(() => process.exit(0)); |
| }; |
|
|
| process.on("SIGINT", shutdown); |
| process.on("SIGTERM", shutdown); |
| } |
|
|
