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add ticker for periodic websocket ping #576

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add ticker for periodic websocket ping #576

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19 changes: 19 additions & 0 deletions internal/cmd/ocean/spark_connect.go
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Original file line number Diff line number Diff line change
Expand Up @@ -274,6 +274,9 @@ func handleSocketConnection(ctx context.Context, conn net.Conn, wsConn *websocke
return fromUpstream(conn, wsConn)
})

// Send websocket ping periodically to keep connection alive
g.Go(func() error { return sendPing(ctx, wsConn) })

return g.Wait()
}

Expand Down Expand Up @@ -315,3 +318,19 @@ func toUpstream(downstream io.Writer, upstream *websocket.Conn) error {

return nil
}

func sendPing(ctx context.Context, wsConn *websocket.Conn) error {
ticker := time.NewTicker(5 * time.Second)
defer ticker.Stop()

for {
select {
case <-ctx.Done():
return nil
case <-ticker.C:
if err := wsConn.WriteMessage(websocket.PingMessage, nil); err != nil {
return err
}
}
}
}