Enhanced Multiplayer Hub

🎮 Enhanced Multiplayer Hub

Val Town compatible multiplayer coordination server with:

✅ Server registration & discovery
✅ Binary block storage (chunked, compressed)
✅ Real-time presence & chat
✅ Profanity filtering

Endpoints:

POST /register - Register a new server
GET /server/{id} - Get server metadata
GET /server/{id}/chat - Get recent chat
POST /server/{id}/blocks?chunkIndex=N&totalChunks=M - Upload blocks
WebSocket /ws - Real-time communication

Enhanced multiplayer hub running on Deno

\n\n`;\n return new Response(html, {\n headers: {\n ...CORS_HEADERS,\n \"content-type\": \"text/html; charset=utf-8\",\n },\n });\n }\n\n // Register server\n if (url.pathname === \"/register\" && req.method === \"POST\") {\n const body = await req.text().catch(() => \"{}\");\n const data = safeJsonParse(body) as Record | null;\n if (!data) {\n return new Response(\"invalid json\", {\n status: 400,\n headers: CORS_HEADERS,\n });\n }\n\n const id = v4.generate().slice(0, 12);\n const rec: ServerRecord = {\n id,\n name: typeof data.name === \"string\"\n ? data.name.slice(0, 80)\n : `Server-${id.slice(0, 6)}`,\n seed: typeof data.seed === \"string\"\n ? data.seed\n : Math.random().toString(36).slice(2),\n motd: typeof data.motd === \"string\"\n ? data.motd.slice(0, 140)\n : \"A Multiplayer Server\",\n iconUrl: typeof data.iconUrl === \"string\" ? data.iconUrl : null,\n adminPassword: typeof data.adminPassword === \"string\"\n ? data.adminPassword\n : null,\n created_at: new Date().toISOString(),\n blocksChunks: new Map(),\n blocksBinary: null,\n blocksTotalBytes: 0,\n presence: new Map(),\n chatLog: [],\n wsClients: new Set(),\n };\n registry.set(id, rec);\n\n const {\n wsClients,\n blocksChunks,\n blocksBinary,\n presence,\n chatLog,\n ...publicRec\n } = rec;\n return new Response(JSON.stringify(publicRec), {\n headers: { ...CORS_HEADERS, \"content-type\": \"application/json\" },\n });\n }\n\n // Get server metadata\n const serverMatch = url.pathname.match(/^\\/server\\/([^\\/]+)$/);\n if (serverMatch && req.method === \"GET\") {\n const id = serverMatch[1];\n const rec = registry.get(id);\n if (!rec) {\n return new Response(\"Not found\", {\n status: 404,\n headers: CORS_HEADERS,\n });\n }\n const {\n wsClients,\n blocksChunks,\n blocksBinary,\n presence,\n chatLog,\n ...publicRec\n } = rec;\n return new Response(JSON.stringify(publicRec), {\n headers: { ...CORS_HEADERS, \"content-type\": \"application/json\" },\n });\n }\n\n // Get chat history\n const chatMatch = url.pathname.match(/^\\/server\\/([^\\/]+)\\/chat$/);\n if (chatMatch && req.method === \"GET\") {\n const id = chatMatch[1];\n const rec = registry.get(id);\n if (!rec) {\n return new Response(\"Not found\", {\n status: 404,\n headers: CORS_HEADERS,\n });\n }\n const now = Date.now();\n rec.chatLog = (rec.chatLog || []).filter((c) =>\n now - c.created_at <= CHAT_RETENTION_MS\n );\n return new Response(JSON.stringify({ chat: rec.chatLog || [] }), {\n headers: { ...CORS_HEADERS, \"content-type\": \"application/json\" },\n });\n }\n\n // Upload blocks (chunked)\n const blocksMatch = url.pathname.match(/^\\/server\\/([^\\/]+)\\/blocks$/);\n if (blocksMatch && req.method === \"POST\") {\n const id = blocksMatch[1];\n const rec = registry.get(id);\n if (!rec) {\n return new Response(\"Server not found\", {\n status: 404,\n headers: CORS_HEADERS,\n });\n }\n\n const params = url.searchParams;\n const chunkIndex = Number(params.get(\"chunkIndex\") ?? \"-1\");\n const totalChunks = Number(params.get(\"totalChunks\") ?? \"-1\");\n const uncompressedBytes = Number(params.get(\"uncompressedBytes\") ?? \"0\");\n\n if (chunkIndex < 0 || totalChunks <= 0 || uncompressedBytes <= 0) {\n return new Response(\"Missing or invalid chunk parameters\", {\n status: 400,\n headers: CORS_HEADERS,\n });\n }\n\n const chunk = new Uint8Array(await req.arrayBuffer());\n if (chunk.length === 0 || chunk.length > MAX_CHUNK_BYTES) {\n return new Response(\"Invalid chunk size\", {\n status: 400,\n headers: CORS_HEADERS,\n });\n }\n\n // Store compressed\n const compressed = await gzipEncode(chunk);\n rec.blocksChunks = rec.blocksChunks || new Map();\n rec.blocksChunks.set(chunkIndex, compressed);\n rec.blocksTotalBytes = uncompressedBytes;\n\n // Check if complete\n if (rec.blocksChunks.size === totalChunks) {\n const totalCompressed = Array.from(rec.blocksChunks.values())\n .reduce((sum, c) => sum + c.byteLength, 0);\n\n if ((rec.blocksTotalBytes || 0) > MAX_TOTAL_STORED) {\n rec.blocksChunks.clear();\n return new Response(\"Total size exceeds limit\", {\n status: 413,\n headers: CORS_HEADERS,\n });\n }\n\n // Notify room\n const room = wsRooms.get(id);\n if (room) {\n const notice = JSON.stringify({\n type: \"blocks:updated\",\n serverId: id,\n totalChunks,\n totalCompressed,\n });\n room.forEach((s) => {\n try {\n s.send(notice);\n } catch {}\n });\n }\n }\n\n return new Response(\n JSON.stringify({ ok: true, storedChunk: chunkIndex }),\n {\n headers: { ...CORS_HEADERS, \"content-type\": \"application/json\" },\n },\n );\n }\n\n // WebSocket endpoint (condensed for brevity - same as enhanced version)\n if (url.pathname === \"/ws\") {\n if (req.headers.get(\"upgrade\") !== \"websocket\") {\n return new Response(\"WebSocket upgrade required\", {\n status: 400,\n headers: CORS_HEADERS,\n });\n }\n\n const { socket, response } = Deno.upgradeWebSocket(req);\n\n socket.onopen = () => {\n socket.send(\n JSON.stringify({\n type: \"welcome\",\n message: \"Connected to enhanced multiplayer hub\",\n }),\n );\n };\n\n const rateState = { lastMsgTs: 0, count: 0 };\n\n socket.onmessage = async (e) => {\n let msg;\n try {\n msg = typeof e.data === \"string\" ? JSON.parse(e.data) : null;\n if (!msg || typeof msg.type !== \"string\") throw new Error();\n } catch {\n socket.send(\n JSON.stringify({ type: \"error\", message: \"invalid_json\" }),\n );\n return;\n }\n\n // Rate limiting\n const now = Date.now();\n if (now - rateState.lastMsgTs > 5000) {\n rateState.count = 0;\n rateState.lastMsgTs = now;\n }\n rateState.count++;\n if (rateState.count > 40) {\n socket.close(1008, \"rate limit exceeded\");\n return;\n }\n\n try {\n switch (msg.type) {\n case \"chat\": {\n const id = msg.serverId || (socket as any).__serverRoom;\n if (!id) break;\n const rec = registry.get(id);\n if (!rec) break;\n\n const raw = typeof msg.message === \"string\"\n ? msg.message.slice(0, 512)\n : \"\";\n const censored = censorMessage(raw);\n const entry: ChatEntry = {\n id: v4.generate(),\n username: msg.username || (socket as any).__username ||\n \"Anonymous\",\n message: censored,\n created_at: Date.now(),\n };\n\n rec.chatLog = rec.chatLog || [];\n rec.chatLog.push(entry);\n rec.chatLog = rec.chatLog.filter((c) =>\n Date.now() - c.created_at <= CHAT_RETENTION_MS\n );\n\n const payload = JSON.stringify({\n type: \"chat\",\n serverId: id,\n comment: entry,\n });\n const set = wsRooms.get(id);\n if (set) {\n set.forEach((s) => {\n try {\n s.send(payload);\n } catch {}\n });\n }\n break;\n }\n\n // Handle other message types (announce, info, join, presence)\n // ... 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