44 lines
1.7 KiB
TypeScript
44 lines
1.7 KiB
TypeScript
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import { createServer, type IncomingMessage, type ServerResponse } from "node:http";
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import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js";
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import { createMcpServer } from "./index";
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// Phase 3 follow-up: serve the MCPedia MCP server over Streamable HTTP
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// (MCP 2025-03-26 transport) so remote clients can use its tools/resources
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// without spawning a stdio subprocess. Stateless mode (sessionIdGenerator
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// undefined): one McpServer + transport per request, no session affinity, no
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// shared-transport connect race, no session-map memory leak. Re-registering
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// 6 tools + 4 resources per request is negligible for a KB-sized corpus.
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const PORT = Number(process.env.MCP_PORT ?? 4021);
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const PATH = "/mcp";
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const CORS: Record<string, string> = {
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"Access-Control-Allow-Origin": "*",
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"Access-Control-Allow-Methods": "GET, POST, DELETE, OPTIONS",
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"Access-Control-Allow-Headers":
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"Content-Type, Accept, Authorization, MCP-Protocol-Version, mcp-session-id",
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};
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const httpServer = createServer(async (req: IncomingMessage, res: ServerResponse) => {
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for (const [k, v] of Object.entries(CORS)) res.setHeader(k, v);
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if (req.method === "OPTIONS") {
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res.writeHead(204).end();
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return;
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}
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if ((req.url ?? "").split("?")[0] !== PATH) {
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res.writeHead(404).end("Not found");
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return;
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}
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// Stateless: fresh server + transport per request.
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const transport = new StreamableHTTPServerTransport({ sessionIdGenerator: undefined });
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const server = createMcpServer();
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await server.connect(transport);
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await transport.handleRequest(req, res);
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});
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httpServer.listen(PORT, () => {
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console.log(`MCPedia MCP server (Streamable HTTP) listening on http://localhost:${PORT}/mcp`);
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});
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