Files
servers/src/everything/sse.ts
cliffhall 97c6408f04 * in .gitignore
- add .idea/ for Jetbrains IDEs
* in everything.ts
  - remove import of SetLevelRequestSchema
  - remove logLevel var
  - add sessionId var
  - in startNotificationIntervals function
    - add optional sid argument
    - set sessionId to sid
    - define messages to be sent, adding sessionId if present
  - remove setRequestHandler call for SetLevelRequestSchema
  - replace server.notification calls that sent "notifications/message" objects with calls to server.sendLoggingMessage, passing just the parameters and sessionId.
* In package.json & package-lock.json
  - bump TS SDK version to 1.17.5
* In sse.ts, pass transport.sessionId to startNotificationIntervals call
* In stdio.ts
  - destructure startNotificationIntervals from createServer call
  - implement custom logging request handler and server.sendLoggingMessage implementation, as a
  workaround for the fact that the SDK's automatic log level handling currently only tracks requested log level by session id. This will be fixed in a followup PR for the SDK
  - call the startNotificationIntervals function after connecting the transport to the server
* In streamableHttp.ts
  - destructure startNotificationIntervals from createServer call
  - call startNotificationIntervals passing the transport.sessionId after connecting the transport to the server
2025-09-02 17:18:11 -04:00

57 lines
1.8 KiB
TypeScript

import { SSEServerTransport } from "@modelcontextprotocol/sdk/server/sse.js";
import express from "express";
import { createServer } from "./everything.js";
console.error('Starting SSE server...');
const app = express();
const transports: Map<string, SSEServerTransport> = new Map<string, SSEServerTransport>();
app.get("/sse", async (req, res) => {
let transport: SSEServerTransport;
const { server, cleanup, startNotificationIntervals } = createServer();
if (req?.query?.sessionId) {
const sessionId = (req?.query?.sessionId as string);
transport = transports.get(sessionId) as SSEServerTransport;
console.error("Client Reconnecting? This shouldn't happen; when client has a sessionId, GET /sse should not be called again.", transport.sessionId);
} else {
// Create and store transport for new session
transport = new SSEServerTransport("/message", res);
transports.set(transport.sessionId, transport);
// Connect server to transport
await server.connect(transport);
console.error("Client Connected: ", transport.sessionId);
// Start notification intervals after client connects
startNotificationIntervals(transport.sessionId);
// Handle close of connection
server.onclose = async () => {
console.error("Client Disconnected: ", transport.sessionId);
transports.delete(transport.sessionId);
await cleanup();
};
}
});
app.post("/message", async (req, res) => {
const sessionId = (req?.query?.sessionId as string);
const transport = transports.get(sessionId);
if (transport) {
console.error("Client Message from", sessionId);
await transport.handlePostMessage(req, res);
} else {
console.error(`No transport found for sessionId ${sessionId}`)
}
});
const PORT = process.env.PORT || 3001;
app.listen(PORT, () => {
console.error(`Server is running on port ${PORT}`);
});