typescript.http_missing_timeout

Stability Medium

Detects HTTP client calls without timeout configuration.

Why It Matters

HTTP requests without timeouts can hang forever:

Stuck requests — Unresponsive servers block your code
Resource leaks — Connections held indefinitely
User experience — Applications become unresponsive
Cascade failures — One slow service blocks everything

Fetch API has no default timeout.

Example

// ❌ Before
const response = await fetch(url);

If the server is slow, this waits forever.

// ✅ After
const controller = new AbortController();
const timeout = setTimeout(() => controller.abort(), 30000);

try {
    const response = await fetch(url, { signal: controller.signal });
    return response;
} finally {
    clearTimeout(timeout);
}

What Unfault Detects

fetch() without AbortController
axios without timeout config
HTTP clients missing timeout

Auto-Fix

Unfault adds AbortController-based timeout.

Library Patterns

// Axios - built-in timeout
const response = await axios.get(url, {
    timeout: 30000
});

// Got - built-in timeout
const response = await got(url, {
    timeout: { request: 30000 }
});

// Helper function
async function fetchWithTimeout(url: string, ms: number) {
    const controller = new AbortController();
    const timeout = setTimeout(() => controller.abort(), ms);

    try {
        return await fetch(url, { signal: controller.signal });
    } finally {
        clearTimeout(timeout);
    }
}