On the wire · 05:11:25 UTC Live 585 · Prematch 14,343 · Markets 57,075 Vol. I · No. 5 · Friday 13 November 2026 wss://pinnfeed.io/v1/stream

Answer · WebSocket · Heartbeat

WebSocket ping / pong heartbeat

Updated 10 November 2026 · PinnFeed · 1 min read

Answer: reply to every server {"type":"ping"} with {"type":"pong"}. Miss ~60 s of pongs and the connection closes. Same rule in Python and Node samples.

One-liner handlers#

if msg["type"] == "ping":
    await ws.send('{"type":"pong"}')

if (msg.type === 'ping') ws.send('{"type":"pong"}');

See stale-price / reconnect.

Trial CTA#

Builder (€99/mo) for WebSocket and closing history. 3-day trial; card required, charged after day 3 unless cancelled. Free REST: signup. Related: answers hub, docs.

Questions people ask#

Is this WebSocket protocol ping?#

Application JSON ping/pong on the PinnFeed stream, documented in WebSocket docs.

Does REST need pong?#

No. Heartbeats are WebSocket-only.

Is this educational content for adults?#

Yes (18+).

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