Server crashes on ECONNRESET (unhandled TCP reset) #138

Problem

The JSS server process crashes when a TCP connection is reset by the client (e.g. browser navigation, haproxy health checks, aborted preflight requests). This results in pm2 restarting the process repeatedly (953+ restarts observed) and intermittent 502 Bad Gateway errors for users.

Error log

Error: read ECONNRESET
    at TCP.onStreamRead (node:internal/stream_base_commons:216:20) {
  errno: -104,
  code: 'ECONNRESET',
  syscall: 'read'
}

Expected behavior

ECONNRESET is normal network noise (clients closing connections early). The server should handle this gracefully without crashing.

Suggested fix

Catch the error at the process level or on the HTTP server socket:

process.on('uncaughtException', (err) => {
  if (err.code === 'ECONNRESET') return
  console.error('Uncaught exception:', err)
  process.exit(1)
})

Or ideally, handle it on the server/socket 'error' event so it never becomes uncaught.

Environment

• JSS v0.0.91
• Node.js on Ubuntu
• Behind haproxy reverse proxy
• pm2 process manager