Function verifyTestData

test/data-integrity.test.js:30–55

(buf)

// Verify the test data is intact
function verifyTestData(buf) {
    const errors = [];
    for (let i = 0; i < buf.length; i += 4) {
        const remaining = Math.min(4, buf.length - i);
        if (remaining < 4) break; // Ignore partial last chunk
        
        const expected = Math.floor(i / 4);
        const actual = buf.readUInt32BE(i);
        
        if (actual !== expected) {
            errors.push({
                offset: i,
                expected,
                actual,
                // Get surrounding context
                context: buf.slice(Math.max(0, i - 8), Math.min(buf.length, i + 12)).toString('hex')
            });
            
            if (errors.length >= 10) {
                errors.push({ message: '... more errors truncated ...' });
                break;
            }
        }
    }
    return errors;
}

async function runTest() {
    const TEST_SIZE = 64 * 1024; // 64KB - enough to span multiple TCP segments