Sends a web push notification with an encrypted payload.

Arguments

• subscription - the subscription JSON string received from the client
• message - the message string to send
• opts - Optional message options, currently:
  • ttl: time to live in seconds if the client is disconnected, defaults to 60 seconds
  • urgency: Urgency of the message, one of: :very-low, :low, :normal, :high
  • topic: a string with a topic, that is used to replace previous same topic notifications

Examples

case WebPushElixir.send_notification(subscription, "Hello!") do
  {:ok, _response} ->
    :ok

  {:error, :expired} ->
    Repo.delete(subscription)

  {:error, {:http_error, status, body}} ->
    Logger.error("HTTP error #{status}: #{body}")
end

Return Values

• {:ok, response} - notification sent successfully (HTTP 200-202)
• {:error, :expired} - subscription expired/not found (HTTP 404 or 410)
• {:error, {:http_error, status, body}} - HTTP error from push service