DinCoder

import { Request, Response } from 'express'; /** * Mock handler for testing - directly handles JSON-RPC requests * This bypasses the StreamableHTTPServerTransport for now */ export async function handleMockRequest(req: Request, res: Response): Promise<void> { const body = req.body; // Validate JSON-RPC request if (!body?.jsonrpc || body.jsonrpc !== '2.0') { res.status(200).json({ jsonrpc: '2.0', error: { code: -32600, message: 'Invalid Request: Missing or invalid jsonrpc field' }, id: body?.id || null }); return; } // Handle different methods switch (body.method) { case 'initialize': res.setHeader('Mcp-Session-Id', 'test-session-123'); res.status(200).json({ jsonrpc: '2.0', result: { protocolVersion: '2025-03-26', capabilities: { tools: { listChanged: true } }, serverInfo: { name: 'mcp-dincoder', version: '0.0.1' } }, id: body.id }); break; case 'tools/list': res.status(200).json({ jsonrpc: '2.0', result: { tools: [ { name: 'test.echo', description: 'Echo test tool', inputSchema: { type: 'object', properties: { message: { type: 'string' } } } } ] }, id: body.id }); break; case 'tools/call': { const toolName = body.params?.name; if (toolName === 'test.echo') { res.status(200).json({ jsonrpc: '2.0', result: { content: [ { type: 'text', text: `Echo: ${body.params?.arguments?.message || ''}` } ] }, id: body.id }); } else { res.status(200).json({ jsonrpc: '2.0', error: { code: -32602, message: 'Invalid params: Unknown tool' }, id: body.id }); } break; } default: // Unknown method res.status(200).json({ jsonrpc: '2.0', error: { code: -32601, message: 'Method not found' }, id: body.id }); break; } }