{"version":3,"file":"http.mjs","names":["transport: StreamableHTTPServerTransport"],"sources":["../src/http.ts"],"sourcesContent":["/**\n * HTTP transport support for the Tusk Drift MCP server.\n * This module provides utilities for running the MCP server over HTTP.\n */\n\nimport type { Request, Response } from \"express\";\nimport { StreamableHTTPServerTransport } from \"@modelcontextprotocol/sdk/server/streamableHttp.js\";\nimport type { McpServer } from \"@modelcontextprotocol/sdk/server/mcp.js\";\n\n/**\n * Session manager for stateful MCP connections.\n * Stores active transports by session ID.\n */\nexport class McpSessionManager {\n private transports = new Map();\n\n /**\n * Get an existing transport by session ID.\n */\n get(sessionId: string): StreamableHTTPServerTransport | undefined {\n return this.transports.get(sessionId);\n }\n\n /**\n * Store a transport with its session ID.\n */\n set(sessionId: string, transport: StreamableHTTPServerTransport): void {\n this.transports.set(sessionId, transport);\n }\n\n /**\n * Remove a transport by session ID.\n */\n delete(sessionId: string): boolean {\n return this.transports.delete(sessionId);\n }\n\n /**\n * Check if a session exists.\n */\n has(sessionId: string): boolean {\n return this.transports.has(sessionId);\n }\n\n /**\n * Get all active session IDs.\n */\n getSessionIds(): string[] {\n return Array.from(this.transports.keys());\n }\n\n /**\n * Clear all sessions.\n */\n clear(): void {\n this.transports.clear();\n }\n}\n\n/**\n * Options for creating an HTTP handler.\n */\nexport interface HttpHandlerOptions {\n /**\n * Factory function to create a new MCP server for each session.\n * This allows per-session customization (e.g., different auth contexts).\n */\n createServer: () => McpServer | Promise;\n\n /**\n * Session manager for stateful connections.\n * If not provided, a new one will be created.\n */\n sessionManager?: McpSessionManager;\n\n /**\n * Optional callback when a new session is created.\n */\n onSessionCreated?: (sessionId: string) => void;\n\n /**\n * Optional callback when a session is closed.\n */\n onSessionClosed?: (sessionId: string) => void;\n\n /**\n * Optional error handler.\n */\n onError?: (error: unknown) => void;\n}\n\n/**\n * Create HTTP request handlers for the MCP server.\n * Returns handlers for POST, GET, and DELETE methods.\n */\nexport function createHttpHandlers(options: HttpHandlerOptions) {\n const {\n createServer,\n sessionManager = new McpSessionManager(),\n onSessionCreated,\n onSessionClosed,\n onError,\n } = options;\n\n /**\n * Handle POST requests (main MCP messages).\n */\n async function handlePost(req: Request, res: Response): Promise {\n const sessionId = req.headers[\"mcp-session-id\"] as string | undefined;\n let transport: StreamableHTTPServerTransport;\n\n if (sessionId && sessionManager.has(sessionId)) {\n // Reuse existing transport for stateful session\n transport = sessionManager.get(sessionId)!;\n } else {\n // Create new transport for this request\n transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: () => crypto.randomUUID(),\n onsessioninitialized: (newSessionId) => {\n sessionManager.set(newSessionId, transport);\n onSessionCreated?.(newSessionId);\n },\n });\n\n // Create and connect server\n const server = await createServer();\n\n // Clean up on close\n transport.onclose = () => {\n const sid = transport.sessionId;\n if (sid) {\n sessionManager.delete(sid);\n onSessionClosed?.(sid);\n }\n };\n\n await server.connect(transport);\n }\n\n // Handle the request\n try {\n await transport.handleRequest(req, res, req.body);\n } catch (error) {\n onError?.(error);\n if (!res.headersSent) {\n res.status(500).json({ error: \"Internal server error\" });\n }\n }\n }\n\n /**\n * Handle GET requests (SSE streaming).\n */\n async function handleGet(req: Request, res: Response): Promise {\n const sessionId = req.headers[\"mcp-session-id\"] as string | undefined;\n\n if (!sessionId || !sessionManager.has(sessionId)) {\n res.status(400).json({ error: \"Invalid or missing session ID\" });\n return;\n }\n\n const transport = sessionManager.get(sessionId)!;\n\n try {\n await transport.handleRequest(req, res);\n } catch (error) {\n onError?.(error);\n if (!res.headersSent) {\n res.status(500).json({ error: \"Internal server error\" });\n }\n }\n }\n\n /**\n * Handle DELETE requests (session termination).\n */\n async function handleDelete(req: Request, res: Response): Promise {\n const sessionId = req.headers[\"mcp-session-id\"] as string | undefined;\n\n if (!sessionId) {\n res.status(400).json({ error: \"Missing session ID\" });\n return;\n }\n\n if (sessionManager.has(sessionId)) {\n const transport = sessionManager.get(sessionId)!;\n await transport.close();\n sessionManager.delete(sessionId);\n onSessionClosed?.(sessionId);\n }\n\n res.status(204).send();\n }\n\n return {\n handlePost,\n handleGet,\n handleDelete,\n sessionManager,\n };\n}\n\n// 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