🛡️ Sentinel: [MEDIUM] Add explicit timeouts to external API fetch calls

[felirami]

User description

🚨 Severity: MEDIUM
💡 Vulnerability: Missing timeouts on external fetch calls.
🎯 Impact: The native fetch API lacks a default timeout. If the remote server hangs or is unresponsive, the connection remains open indefinitely, leading to server resource exhaustion and potential Denial of Service (DoS) for the Next.js API routes.
🔧 Fix: Added explicit timeouts using AbortSignal.timeout() to fetch calls in src/lib/network.ts and src/lib/snap-market.ts (NODE_PROBE_TIMEOUT_MS and MARKET_DATA_TIMEOUT_MS).
✅ Verification: Verified by running npm run lint, npm run typecheck, and npm run build locally, all of which pass without errors.

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PR created automatically by Jules for task 7622011122332107204 started by @felirami

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CodeAnt-AI Description

Add timeouts to external API checks

What Changed

• Network status checks now stop after a fixed time instead of waiting indefinitely for an unresponsive server
• Snap market data requests now also stop after a fixed time, reducing the chance of stalled data updates

Impact

✅ Fewer hung status checks
✅ Lower risk of stalled market data refreshes
✅ Reduced server resource exhaustion

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Note

Add explicit timeouts to external API fetch calls in network and market data modules

• Adds AbortSignal.timeout(NODE_PROBE_TIMEOUT_MS) to the getNetworkStatus fetch in network.ts so node info probes are bounded by the existing timeout constant.
• Introduces a new MARKET_DATA_TIMEOUT_MS constant (10,000 ms) and applies it via AbortSignal.timeout to the Dexscreener fetch in getSnapMarketData in snap-market.ts.
• Behavioral Change: timed-out requests in both functions now return ok=false with an error message rather than hanging indefinitely.

^{Macroscope summarized 729834f.}

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Project	Deployment	Actions	Updated (UTC)
hypersnaporg	Ready	Preview, Comment	Jun 15, 2026 8:46pm

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