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[v2] Decouple server from express and hono - http framework-agnostic MCP server (#1326)

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Konstantin Konstantinov 2026-01-16 12:13:25 +02:00 • committed by GitHub
commit f495077e08
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1 changed files with 8193 additions and 15757 deletions
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8
examples/server/src/ssePollingExample.ts
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@ -14,8 +14,10 @@
*/
import { randomUUID } from 'node:crypto';
import { createMcpExpressApp } from '@modelcontextprotocol/express';
import { NodeStreamableHTTPServerTransport } from '@modelcontextprotocol/node';
import type { CallToolResult } from '@modelcontextprotocol/server';
import { createMcpExpressApp, McpServer, StreamableHTTPServerTransport } from '@modelcontextprotocol/server';
import { McpServer } from '@modelcontextprotocol/server';
import cors from 'cors';
import type { Request, Response } from 'express';
@ -111,7 +113,7 @@ app.use(cors());
const eventStore = new InMemoryEventStore();
// Track transports by session ID for session reuse
const transports = new Map<string, StreamableHTTPServerTransport>();
const transports = new Map<string, NodeStreamableHTTPServerTransport>();
// Handle all MCP requests
app.all('/mcp', async (req: Request, res: Response) => {
@ -121,7 +123,7 @@ app.all('/mcp', async (req: Request, res: Response) => {
let transport = sessionId ? transports.get(sessionId) : undefined;
if (!transport) {
transport = new StreamableHTTPServerTransport({
transport = new NodeStreamableHTTPServerTransport({
sessionIdGenerator: () => randomUUID(),
eventStore,
retryInterval: 2000, // Default retry interval for priming events