Unit pingsend

DescriptionusesClasses, Interfaces and ObjectsFunctions and ProceduresTypesConstantsVariables

Description

ICMP PING implementation.

Allows create PING and TRACEROUTE. Or you can diagnose your network.

Warning: this unit using RAW sockets. On some systems you must have special rights for using this sort of sockets. So, it working allways when you have administator/root rights. Otherwise you can have problems!

Note: IPv6 not working under .NET. It is lack of Microsoft's .NET framework.

Classes, Interfaces and Objects

NameDescription
record TIcmpEchoHeader  
record TICMP6Packet  
Class TPINGSend Implementation of ICMP PING and ICMPv6 PING.

Functions and Procedures

Overview

function PingHost(const Host: string): Integer;
function TraceRouteHost(const Host: string): string;

Description

function PingHost(const Host: string): Integer;

A very useful function and example of its use would be found in the TPINGSend object. Use it to ping to any host. If successful, returns the ping time in milliseconds. Returns -1 if an error occurred.

function TraceRouteHost(const Host: string): string;

A very useful function and example of its use would be found in the TPINGSend object. Use it to TraceRoute to any host.

Types

NameDescription
TICMPError

List of possible ICMP reply packet types.

  • IE_NoError:
  • IE_Other:
  • IE_TTLExceed:
  • IE_UnreachOther:
  • IE_UnreachRoute:
  • IE_UnreachAdmin:
  • IE_UnreachAddr:
  • IE_UnreachPort:

Constants

NameDescription
ICMP_ECHO = 8;  
ICMP_ECHOREPLY = 0;  
ICMP_UNREACH = 3;  
ICMP_TIME_EXCEEDED = 11;  
ICMP6_ECHO = 128;  
ICMP6_ECHOREPLY = 129;  
ICMP6_UNREACH = 1;  
ICMP6_TIME_EXCEEDED = 3;  

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