How do you handle reconnection logic in WebSockets?

Updated May 6, 2026

Short answer

Reconnection logic involves detecting disconnection events and retrying connection with backoff strategy.

Deep explanation

WebSockets do not automatically reconnect. Developers implement reconnection using exponential backoff to avoid overwhelming the server. The client listens to onclose and attempts reconnect after delays.

Real-world example

Chat applications automatically reconnect when internet drops.

Common mistakes

  • Reconnecting too aggressively without delay causing server overload.

Follow-up questions

  • What is exponential backoff?
  • Should you store unsent messages?

More WebSockets interview questions

View all →