henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2004--2005, Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifndef TALK_BASE_WINPING_H__ |
| 29 | #define TALK_BASE_WINPING_H__ |
| 30 | |
| 31 | #ifdef WIN32 |
| 32 | |
| 33 | #include "talk/base/win32.h" |
| 34 | #include "talk/base/basictypes.h" |
| 35 | #include "talk/base/IPAddress.h" |
| 36 | |
| 37 | namespace talk_base { |
| 38 | |
| 39 | // This class wraps a Win32 API for doing ICMP pinging. This API, unlike the |
| 40 | // the normal socket APIs (as implemented on Win9x), will return an error if |
| 41 | // an ICMP packet with the dont-fragment bit set is too large. This means this |
| 42 | // class can be used to detect the MTU to a given address. |
| 43 | |
| 44 | typedef struct ip_option_information { |
| 45 | UCHAR Ttl; // Time To Live |
| 46 | UCHAR Tos; // Type Of Service |
| 47 | UCHAR Flags; // IP header flags |
| 48 | UCHAR OptionsSize; // Size in bytes of options data |
| 49 | PUCHAR OptionsData; // Pointer to options data |
| 50 | } IP_OPTION_INFORMATION, * PIP_OPTION_INFORMATION; |
| 51 | |
| 52 | typedef HANDLE (WINAPI *PIcmpCreateFile)(); |
| 53 | |
| 54 | typedef BOOL (WINAPI *PIcmpCloseHandle)(HANDLE icmp_handle); |
| 55 | |
| 56 | typedef HANDLE (WINAPI *PIcmp6CreateFile)(); |
| 57 | |
| 58 | typedef BOOL (WINAPI *PIcmp6CloseHandle)(HANDLE icmp_handle); |
| 59 | |
| 60 | typedef DWORD (WINAPI *PIcmpSendEcho)( |
| 61 | HANDLE IcmpHandle, |
| 62 | ULONG DestinationAddress, |
| 63 | LPVOID RequestData, |
| 64 | WORD RequestSize, |
| 65 | PIP_OPTION_INFORMATION RequestOptions, |
| 66 | LPVOID ReplyBuffer, |
| 67 | DWORD ReplySize, |
| 68 | DWORD Timeout); |
| 69 | |
| 70 | typedef DWORD (WINAPI *PIcmp6SendEcho2)( |
| 71 | HANDLE IcmpHandle, |
| 72 | HANDLE Event, |
| 73 | FARPROC ApcRoutine, |
| 74 | PVOID ApcContext, |
| 75 | struct sockaddr_in6 *SourceAddress, |
| 76 | struct sockaddr_in6 *DestinationAddress, |
| 77 | LPVOID RequestData, |
| 78 | WORD RequestSize, |
| 79 | PIP_OPTION_INFORMATION RequestOptions, |
| 80 | LPVOID ReplyBuffer, |
| 81 | DWORD ReplySize, |
| 82 | DWORD Timeout |
| 83 | ); |
| 84 | |
| 85 | class WinPing { |
| 86 | public: |
| 87 | WinPing(); |
| 88 | ~WinPing(); |
| 89 | |
| 90 | // Determines whether the class was initialized correctly. |
| 91 | bool IsValid() { return valid_; } |
| 92 | |
| 93 | // Attempts to send a ping with the given parameters. |
| 94 | enum PingResult { PING_FAIL, PING_INVALID_PARAMS, |
| 95 | PING_TOO_LARGE, PING_TIMEOUT, PING_SUCCESS }; |
| 96 | PingResult Ping( |
| 97 | IPAddress ip, uint32 data_size, uint32 timeout_millis, uint8 ttl, |
| 98 | bool allow_fragments); |
| 99 | |
| 100 | private: |
| 101 | HMODULE dll_; |
| 102 | HANDLE hping_; |
| 103 | HANDLE hping6_; |
| 104 | PIcmpCreateFile create_; |
| 105 | PIcmpCloseHandle close_; |
| 106 | PIcmpSendEcho send_; |
| 107 | PIcmp6CreateFile create6_; |
| 108 | PIcmp6SendEcho2 send6_; |
| 109 | char* data_; |
| 110 | uint32 dlen_; |
| 111 | char* reply_; |
| 112 | uint32 rlen_; |
| 113 | bool valid_; |
| 114 | }; |
| 115 | |
| 116 | } // namespace talk_base |
| 117 | |
| 118 | #endif // WIN32 |
| 119 | |
| 120 | #endif // TALK_BASE_WINPING_H__ |