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Exposing session id for browser clients #656

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Exposing session id for browser clients #656

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12 changes: 10 additions & 2 deletions src/examples/server/simpleStreamableHttp.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,8 @@ import { InMemoryEventStore } from '../shared/inMemoryEventStore.js';
import { setupAuthServer } from './demoInMemoryOAuthProvider.js';
import { OAuthMetadata } from 'src/shared/auth.js';

import cors from "cors";

// Check for OAuth flag
const useOAuth = process.argv.includes('--oauth');

Expand Down Expand Up @@ -418,12 +420,18 @@ const getServer = () => {
return server;
};

const MCP_PORT = 3000;
const AUTH_PORT = 3001;
const MCP_PORT = process.env.MCP_PORT ? parseInt(process.env.MCP_PORT, 10) : 3000;
const AUTH_PORT = process.env.MCP_AUTH_PORT ? parseInt(process.env.MCP_AUTH_PORT, 10) : 3001;

const app = express();
app.use(express.json());

// Allow CORS all domains, expose the Mcp-Session-Id header
app.use(cors({
origin: '*', // Allow all origins
exposedHeaders: ["Mcp-Session-Id"]
}));

// Set up OAuth if enabled
let authMiddleware = null;
if (useOAuth) {
Expand Down