ICMP_ECHO_REPLY (Compact 2013)

3/26/2014

This structure describes the data that is returned in response to an echo request (IcmpSendEcho).

Syntax

struct icmp_echo_reply {
  IPAddr Address;
  unsigned long Status;
  unsigned long RoundTripTime;
  unsigned short DataSize; 
  unsigned short Reserved; 
  void FAR* Data;
  struct ip_option_information Options; 
} ICMP_ECHO_REPLY, *PICMP_ECHO_REPLY; 

Members

• Address
  The replying IP address

• Status
  The status of the echo request, in the form of an IP_STATUS code. The possible values for this member are defined in the ipexport.h header file:

  Value	Meaning
  IP_SUCCESS 11000	The request was successful
  IP_BUF_TOO_SMALL 11001	The reply buffer was too small
  IP_DEST_NET_UNREACHABLE 11002	The destination network was unreachable
  IP_DEST_HOST_UNREACHABLE 11003	The destination host was unreachable
  IP_DEST_PROT_UNREACHABLE 11004	The destination protocol was unreachable
  IP_DEST_PORT_UNREACHABLE 11005	The destination port was unreachable
  IP_NO_RESOURCES 11006	Insufficient IP resources were available.
  IP_BAD_OPTION 11007	A bad IP option was specified.
  IP_HW_ERROR 11008	A hardware error occurred.
  IP_PACKET_TOO_BIG 11009	The packet was too big
  IP_REQ_TIMED_OUT 11010	The request timed out
  IP_BAD_REQ 11011	A bad request
  IP_BAD_ROUTE 11012	A bad route
  IP_TTL_EXPIRED_TRANSIT 11013	The Time to Live (TTL) expired in transit
  IP_TTL_EXPIRED_REASSEM 11014	The Time to Live expired during fragment reassembly
  IP_PARAM_PROBLEM 11015	A parameter problem
  IP_SOURCE_QUENCH 11016	Datagrams are arriving too fast to be processed and datagrams may have been discarded
  IP_OPTION_TOO_BIG 11017	An IP option was too big
  IP_BAD_DESTINATION 11018	A bad destination
  IP_GENERAL_FAILURE 11050	A general failure. This error can be returned for some malformed ICMP packets.

• RoundTripTime
  The roundtrip time (RTT) in milliseconds

• DataSize
  The data size, in bytes, of the reply

• Reserved
  Reserved for system use

• Data
  A pointer to the reply data

• Options
  The IP options in the IP header of the reply, in the form of an IP_OPTION_INFORMATION structure

Requirements

See Also

Reference

ICMP Structures
IcmpSendEcho