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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _WINPING_H_
#define _WINPING_H_
#ifdef WIN32
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include "talk/base/basictypes.h"
#include <winsock2.h>
#define _WINSOCKAPI_
#include <windows.h>
#undef SetPort
// This class wraps a Win32 API for doing ICMP pinging. This API, unlike the
// the normal socket APIs (as implemented on Win9x), will return an error if
// an ICMP packet with the dont-fragment bit set is too large. This means this
// class can be used to detect the MTU to a given address.
typedef struct ip_option_information {
UCHAR Ttl; // Time To Live
UCHAR Tos; // Type Of Service
UCHAR Flags; // IP header flags
UCHAR OptionsSize; // Size in bytes of options data
PUCHAR OptionsData; // Pointer to options data
} IP_OPTION_INFORMATION, * PIP_OPTION_INFORMATION;
typedef HANDLE (WINAPI *PIcmpCreateFile)();
typedef BOOL (WINAPI *PIcmpCloseHandle)(HANDLE icmp_handle);
typedef DWORD (WINAPI *PIcmpSendEcho)(
HANDLE IcmpHandle,
ULONG DestinationAddress,
LPVOID RequestData,
WORD RequestSize,
PIP_OPTION_INFORMATION RequestOptions,
LPVOID ReplyBuffer,
DWORD ReplySize,
DWORD Timeout);
class WinPing {
public:
WinPing();
~WinPing();
// Determines whether the class was initialized correctly.
bool IsValid() { return valid_; }
// Attempts to send a ping with the given parameters.
enum PingResult { PING_FAIL, PING_TOO_LARGE, PING_TIMEOUT, PING_SUCCESS };
PingResult Ping(
uint32 ip, uint32 data_size, uint32 timeout_millis, uint8 ttl,
bool allow_fragments);
private:
HMODULE dll_;
HANDLE hping_;
PIcmpCreateFile create_;
PIcmpCloseHandle close_;
PIcmpSendEcho send_;
char* data_;
uint32 dlen_;
char* reply_;
uint32 rlen_;
bool valid_;
};
#endif // WIN32
#endif // _WINPING_H_
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