To send an ICMP request or determine if a host is availableICMP is a network layer protocol that delivers flow control, error messages, routing, and other data between Internet hosts. ICMP is primarily used by application developers for a network ping, which is also known as Packet Internet Groper. A ping is the process of sending an echo message to an IP address and reading the reply to verify a connection between TCP/IP hosts.
Use the following Winsock API functions to write a ping application: IcmpCreateFile, IcmpSendEcho, and IcmpCloseHandle.
To send an ICMP request or determine if a host is availableIt returns any ICMP response from the intended host recipient, or returns an error if the network is inaccessible. A time-out value may be specified to limit the wait time in case the destination is inaccessible.