CIcmp MFC/VisualC++ Class

Class Variables
The CIcmp class contains the following public variables:
- LPIcmpHeader pIcmpHeader
-
- Pointer to an IcmpHeader structure;
- Usually mapped to the current ICMP buffer.
- LPIpHeader pIpHeader
-
- Pointer to an IpHeader structure;
- Usually mapped to the current receive buffer.
- SOCKET icmpSocket
-
- An asynchronous socket. See CSocket class for implementation;
- Contains the current socket for this CIcmp object;
- Default is INVALID_SOCKET for unopened/unassigned socket.
- SOCKADDR_IN icmpSockAddr
-
- Socket address structure for outgoing (send) socket communication;
- Refer to SOCKADDR_IN structure in VisualC++ help or MFC documentation.
- SOCKADDR_IN rcvSockAddr
-
- Socket address structure for incoming (recvfrom) socket communication;
- Refer to SOCKADDR_IN structure in VisualC++ help or MFC documentation.
- DWORD icmpRoundTripTime
-
- Time between sending a message and receiving the echo;
- in mSec.
- unsigned long icmpHostAddress
-
- Host address in network byte order;
- Maintained external to the CIcmp class;
- see inet_aton for format.
- DWORD icmpPingSentAt
-
- System time when the last ICMP message was sent;
- in mSec.
- DWORD icmpPingReceivedAt
-
- System time when the last ICMP message was received;
- in mSec.
- int icmpRcvLen
-
- integer length of the last message received;
- set by Receive.
- int icmpHops
-
- Number of hops (routers contacted) in a trace route operation;
- Set to zero by Connect method;
- Maintained external to class (by application program).
- int icmpMaxHops
-
- A limit set for trace route operations which fail to complete gracefully;
- Defaults to 30 in the CIcmp constructor;
- Maintained external to class (by application program).
- int icmpCurSeq
-
- Current ICMP message sequence number;
- Set by application program before calling Ping;
- Set by Receive after processing an incoming (recvfrom) message.
- int icmpCurId
-
- ICMP id field;
- Set to current process id by Connect;
- Assigned to outgoing ICMP message by Ping;
- Set to incoming ICMP id field by Receive
- int icmpPingTimer
-
- send (Ping) timeout in mSec;
- recvfrom (Receive) timeout in mSec.
- int icmpSocketError
-
- The WSAGetLastError for the last error which occurred;
- Preserved until the next socket error occurs.
- int icmpSocketErrorMod
-
- The entry level in the processing routine at which icmpSocketError occurred;
- Preserved until the next socket error occurs.

Copyright (c) 1997,1998. EarthWalk Designs.
Direct all inquiries to:Jay Wheeler
at EarthWalkDesigns.com