OptionalackHow long to wait for the first acknowledgment, in milliseconds, two seconds when omitted. Each wait after it doubles, and RFC 7252 forbids a first wait shorter than two seconds on a network without congestion control.
OptionalbindThe local address to bind. Defaults to an ephemeral port when omitted.
The peer hostname or IP address.
OptionalmaxHow many times to retransmit an unacknowledged request.
The peer UDP port, conventionally 5683 for plaintext CoAP.
OptionalreliabilityWhether requests are acknowledged and retried. Defaults to confirmable.
The settings a CoAP endpoint is built from.