如何使用回调示例vc实现icmpsendecho2异步

问题描述

我需要使用 IcmpSendEcho2 API 命令异步使用ApcRoutine 回调例程.

I have a need to use the IcmpSendEcho2 API command asynchronously using theApcRoutine callback routine.

我的一个问题是 ApcRoutine 的签名是什么样的我需要定义回调例程吗?

A question I have is what would the signature look like for the ApcRoutinecallback routine I need to define?

当我调用 IcmpSendEcho2 时，第三个参数会是什么样子?

When I call IcmpSendEcho2 what would the third parameter look like?

我有大约 15 个代理请求要发送.我应该只用 IcmpSendEcho2 请求一次还是多次.

I have some 15 proxy request to be sent. should I request with IcmpSendEcho2 only once or multiple times.

如果我需要一次发送许多 IcmpSendEcho2 请求.怎么会回调 ApcRoutine 知道完成了哪个 IcmpSendEcho2 调用.我猜这个ApcContext 参数在哪里发挥作用?

If I will need to send many IcmpSendEcho2 requests at one time. How willthe callback ApcRoutine know which IcmpSendEcho2 call is done. I guess thisis where the ApcContext parameter comes into play?

我在 MSDN 或其他地方找不到任何示例代码来演示如何到异步使用 IcmpSendEcho2 命令.

I can't find any example code on MSDN or elsewhere that demonstrates howtouse the IcmpSendEcho2 command asynchronously.

推荐答案

int ReplyCame(PVOID param)
{
 char* szAddr = (char*) param;

 printf("Replay Came for %s......\n", szAddr);

 return 0;
}

char* szAddr1 = "172.18.1.1";
char* szAddr2 = "172.18.1.4";

int _tmain(int argc, _TCHAR* argv[])
{
 char *SendData = "Data Buffer";
 LPVOID ReplyBuffer;

 HANDLE IcmpHandle = IcmpCreateFile();

 IPAddr addr1 = inet_addr(szAddr1);
 IPAddr addr2 = inet_addr(szAddr2);

 ReplyBuffer = (VOID*) malloc(sizeof(ICMP_ECHO_REPLY) + sizeof(SendData));

 IcmpSendEcho2(IcmpHandle, NULL, (FARPROC)ReplyCame, szAddr1, addr1,
SendData, sizeof(SendData), NULL, ReplyBuffer, 8*sizeof(ReplyBuffer) +
sizeof(ICMP_ECHO_REPLY), 1000);
 IcmpSendEcho2(IcmpHandle, NULL, (FARPROC)ReplyCame, szAddr2, addr2,
SendData, sizeof(SendData), NULL, ReplyBuffer, 8*sizeof(ReplyBuffer) +
sizeof(ICMP_ECHO_REPLY), 1000);

 SleepEx(5000, TRUE);

 return 0;
}

注意，如果你想使用replyBuffer，你需要先用IcmpParseReplies解析它.

Do notice that if you want to use the replyBuffer you need to parse it before with IcmpParseReplies.

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