Tcpip.Tcpval pp_error : error Fmt.tval pp_write_error : write_error Fmt.tmodule Keepalive : sig ... endConfiguration for TCP keep-alives. Keep-alive messages are probes sent on an idle connection. If no traffic is received after a certain number of probes are sent, then the connection is assumed to have been lost.
module type S = sig ... endTransmission Control Protocol layer: reliable ordered streaming communication.