OptionaltimeoutRequest/connection timeout in seconds for HTTP I/O. Default: 60. Pass 0 to disable the timeout.
OptionaluseWhen true (default), OAuth-capable APIs authenticate against Sinch auth.
Set false to skip Sinch OAuth (e.g. custom Authorization via requestPlugins).
When false, OAuth-capable APIs require only projectId.
Transport-level settings shared by SinchClient and (later) request-level options.