mirror of
https://github.com/modelcontextprotocol/servers.git
synced 2026-04-18 00:03:23 +02:00
5de886ca63
In src/everything:
* Refactor / move streamableHttp.ts, sse.ts, and stdio.ts to transports/
* Move everything.ts to server/ for reference
* Add server/index.js
- exports the createServer function
- import registerTools from tools/index.js
- in createServer()
- read instructions.md and include in ServerOptions for McpServer constructor
- construct McpServer instead of Server
- call registerTools, passing server
* Add tools/echo.ts
- define EchoSchema
- define tool config
- export addToolEcho function
- in addToolEcho()
- register handler for Echo tool
* Add tools/index.ts
- import addToolEcho
- export registerTools function
- in registerTools()
- call addToolEcho
63 lines
2.1 KiB
TypeScript
63 lines
2.1 KiB
TypeScript
import { SSEServerTransport } from "@modelcontextprotocol/sdk/server/sse.js";
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import express from "express";
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import { createServer } from "../server/index.js";
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import cors from 'cors';
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console.error('Starting SSE server...');
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const app = express();
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app.use(cors({
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"origin": "*", // use "*" with caution in production
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"methods": "GET,POST",
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"preflightContinue": false,
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"optionsSuccessStatus": 204,
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})); // Enable CORS for all routes so Inspector can connect
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const transports: Map<string, SSEServerTransport> = new Map<string, SSEServerTransport>();
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app.get("/sse", async (req, res) => {
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let transport: SSEServerTransport;
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const { server, cleanup, startNotificationIntervals } = createServer();
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if (req?.query?.sessionId) {
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const sessionId = (req?.query?.sessionId as string);
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transport = transports.get(sessionId) as SSEServerTransport;
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console.error("Client Reconnecting? This shouldn't happen; when client has a sessionId, GET /sse should not be called again.", transport.sessionId);
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} else {
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// Create and store transport for new session
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transport = new SSEServerTransport("/message", res);
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transports.set(transport.sessionId, transport);
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// Connect server to transport
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await server.connect(transport);
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console.error("Client Connected: ", transport.sessionId);
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// Start notification intervals after client connects
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startNotificationIntervals(transport.sessionId);
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// Handle close of connection
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server.server.onclose = async () => {
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console.error("Client Disconnected: ", transport.sessionId);
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transports.delete(transport.sessionId);
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await cleanup();
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};
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}
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});
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app.post("/message", async (req, res) => {
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const sessionId = (req?.query?.sessionId as string);
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const transport = transports.get(sessionId);
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if (transport) {
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console.error("Client Message from", sessionId);
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await transport.handlePostMessage(req, res);
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} else {
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console.error(`No transport found for sessionId ${sessionId}`)
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}
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});
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const PORT = process.env.PORT || 3001;
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app.listen(PORT, () => {
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console.error(`Server is running on port ${PORT}`);
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});
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