Vite template

2025-05-12 20:05:01 +00:00
parent f13672ad63
commit fd3ab9d22e
4629 changed files with 1018429 additions and 0 deletions
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+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const express_1 = __importDefault(require("express"));
+const node_crypto_1 = require("node:crypto");
+const mcp_js_1 = require("../../server/mcp.js");
+const streamableHttp_js_1 = require("../../server/streamableHttp.js");
+const zod_1 = require("zod");
+const types_js_1 = require("../../types.js");
+// Create an MCP server with implementation details
+const getServer = () => {
+    const server = new mcp_js_1.McpServer({
+        name: 'json-response-streamable-http-server',
+        version: '1.0.0',
+    }, {
+        capabilities: {
+            logging: {},
+        }
+    });
+    // Register a simple tool that returns a greeting
+    server.tool('greet', 'A simple greeting tool', {
+        name: zod_1.z.string().describe('Name to greet'),
+    }, async ({ name }) => {
+        return {
+            content: [
+                {
+                    type: 'text',
+                    text: `Hello, ${name}!`,
+                },
+            ],
+        };
+    });
+    // Register a tool that sends multiple greetings with notifications
+    server.tool('multi-greet', 'A tool that sends different greetings with delays between them', {
+        name: zod_1.z.string().describe('Name to greet'),
+    }, async ({ name }, { sendNotification }) => {
+        const sleep = (ms) => new Promise(resolve => setTimeout(resolve, ms));
+        await sendNotification({
+            method: "notifications/message",
+            params: { level: "debug", data: `Starting multi-greet for ${name}` }
+        });
+        await sleep(1000); // Wait 1 second before first greeting
+        await sendNotification({
+            method: "notifications/message",
+            params: { level: "info", data: `Sending first greeting to ${name}` }
+        });
+        await sleep(1000); // Wait another second before second greeting
+        await sendNotification({
+            method: "notifications/message",
+            params: { level: "info", data: `Sending second greeting to ${name}` }
+        });
+        return {
+            content: [
+                {
+                    type: 'text',
+                    text: `Good morning, ${name}!`,
+                }
+            ],
+        };
+    });
+    return server;
+};
+const app = (0, express_1.default)();
+app.use(express_1.default.json());
+// Map to store transports by session ID
+const transports = {};
+app.post('/mcp', async (req, res) => {
+    console.log('Received MCP request:', req.body);
+    try {
+        // Check for existing session ID
+        const sessionId = req.headers['mcp-session-id'];
+        let transport;
+        if (sessionId && transports[sessionId]) {
+            // Reuse existing transport
+            transport = transports[sessionId];
+        }
+        else if (!sessionId && (0, types_js_1.isInitializeRequest)(req.body)) {
+            // New initialization request - use JSON response mode
+            transport = new streamableHttp_js_1.StreamableHTTPServerTransport({
+                sessionIdGenerator: () => (0, node_crypto_1.randomUUID)(),
+                enableJsonResponse: true, // Enable JSON response mode
+                onsessioninitialized: (sessionId) => {
+                    // Store the transport by session ID when session is initialized
+                    // This avoids race conditions where requests might come in before the session is stored
+                    console.log(`Session initialized with ID: ${sessionId}`);
+                    transports[sessionId] = transport;
+                }
+            });
+            // Connect the transport to the MCP server BEFORE handling the request
+            const server = getServer();
+            await server.connect(transport);
+            await transport.handleRequest(req, res, req.body);
+            return; // Already handled
+        }
+        else {
+            // Invalid request - no session ID or not initialization request
+            res.status(400).json({
+                jsonrpc: '2.0',
+                error: {
+                    code: -32000,
+                    message: 'Bad Request: No valid session ID provided',
+                },
+                id: null,
+            });
+            return;
+        }
+        // Handle the request with existing transport - no need to reconnect
+        await transport.handleRequest(req, res, req.body);
+    }
+    catch (error) {
+        console.error('Error handling MCP request:', error);
+        if (!res.headersSent) {
+            res.status(500).json({
+                jsonrpc: '2.0',
+                error: {
+                    code: -32603,
+                    message: 'Internal server error',
+                },
+                id: null,
+            });
+        }
+    }
+});
+// Handle GET requests for SSE streams according to spec
+app.get('/mcp', async (req, res) => {
+    // Since this is a very simple example, we don't support GET requests for this server
+    // The spec requires returning 405 Method Not Allowed in this case
+    res.status(405).set('Allow', 'POST').send('Method Not Allowed');
+});
+// Start the server
+const PORT = 3000;
+app.listen(PORT, () => {
+    console.log(`MCP Streamable HTTP Server listening on port ${PORT}`);
+});
+// Handle server shutdown
+process.on('SIGINT', async () => {
+    console.log('Shutting down server...');
+    process.exit(0);
+});
+//# sourceMappingURL=jsonResponseStreamableHttp.js.map