windows - how to implement icmpsendecho2 asynchronous with callback example vc -


i have need use icmpsendecho2 api command asynchronously using apcroutine callback routine.

a question have signature apcroutine callback routine need define?

when call icmpsendecho2 third parameter like?

i have 15 proxy request sent. should request icmpsendecho2 once or multiple times.

if need send many icmpsendecho2 requests @ 1 time. how callback apcroutine know icmpsendecho2 call done. guess apccontext parameter comes play?

i can't find example code on msdn or elsewhere demonstrates how use icmpsendecho2 command asynchronously.

int replycame(pvoid param) {  char* szaddr = (char*) param;   printf("replay came %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; }

do notice if want use replybuffer need parse before icmpparsereplies.


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