mirror of https://github.com/coder/coder.git
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package httpapi
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import (
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"context"
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"time"
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"nhooyr.io/websocket"
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"cdr.dev/slog"
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)
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// Heartbeat loops to ping a WebSocket to keep it alive.
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// Default idle connection timeouts are typically 60 seconds.
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// See: https://docs.aws.amazon.com/elasticloadbalancing/latest/application/application-load-balancers.html#connection-idle-timeout
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func Heartbeat(ctx context.Context, conn *websocket.Conn) {
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ticker := time.NewTicker(15 * time.Second)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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}
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err := conn.Ping(ctx)
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if err != nil {
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return
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}
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}
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}
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// Heartbeat loops to ping a WebSocket to keep it alive. It calls `exit` on ping
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// failure.
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func HeartbeatClose(ctx context.Context, logger slog.Logger, exit func(), conn *websocket.Conn) {
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ticker := time.NewTicker(15 * time.Second)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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}
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err := conn.Ping(ctx)
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if err != nil {
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_ = conn.Close(websocket.StatusGoingAway, "Ping failed")
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logger.Info(ctx, "failed to heartbeat ping", slog.Error(err))
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exit()
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return
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}
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}
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}
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