http-client version 6.3.
Requests to API server are run from another server.. Both running Symfony. So there is no direct call to API from the browser and old browser is not an issue here since the call is made from server to server. Now the default crypto_method on http-client is set to TLS 1.2. Any ideas how these handshake errors can occur?
Majority of other requests are working fine, these handshake failures occur only once an hour or so. They affect random users and do not seem to be tied to a specific API endpoint.