src/icmp/IcmpSquid.h

   1 /*
   2  * Copyright (C) 1996-2021 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 37    ICMP Routines */
  10
  11 #ifndef _INCLUDE_ICMPSQUID_H
  12 #define _INCLUDE_ICMPSQUID_H
  13
  14 #include "Icmp.h"
  15
  16 /**
  17  * Implements a non-blocking pseudo-ICMP engine for squid internally.
  18  *
  19  * Rather than doing all the work itself it passes each request off to
  20  * an external pinger helper and returns results form that helper to squid.
  21  *
  22  * Provides ECHO-REQUEST, ECHO-REPLY in a protocol-neutral manner.
  23  */
  24 class IcmpSquid : public Icmp
  25 {
  26 public:
  27     IcmpSquid();
  28     virtual ~IcmpSquid();
  29
  30     virtual int Open();
  31     virtual void Close();
  32
  33     void DomainPing(Ip::Address &to, const char *domain);
  34
  35 #if USE_ICMP
  36     virtual void SendEcho(Ip::Address &to, int opcode, const char* payload=NULL, int len=0);
  37     virtual void Recv(void);
  38 #endif
  39 };
  40
  41 // global engine within squid.
  42 extern IcmpSquid icmpEngine;
  43
  44 #endif /* _INCLUDE_ICMPSQUID_H */
  45