问一个SNMPTRAP问题,监听启动成功,但收不到陷入,大家帮忙看一下代码
MFC工程里启动了一个线程,代码是从网上看的,处理函数如下:
INT operation;
LPSTR agent;
LPSTR community;
RFC1157VarBindList variableBindings;
LPSNMP_MGR_SESSION session;
HANDLE hNewTraps = NULL;
if (!SnmpMgrTrapListen(&hNewTraps))/*这一步在装了TRAP服务后是可以成功的*/
{
printf("error on SnmpMgrTrapListen %d\n", GetLastError());
}
else
{
printf("snmputil: listening for traps...\n");
}
while(1)
{
DWORD dwResult;
/*程序在执行完过这个函数后,一直等待*/
if ((dwResult = WaitForSingleObject(hNewTraps, 0xffffffff))/*这一步能执行到,并且没有返回错误*/
== 0xffffffff)
{
printf("error on WaitForSingleObject %d\n",
GetLastError());
}
else if (!ResetEvent(hNewTraps))
{
printf("error on ResetEvent %d\n", GetLastError());
}
else
{
AsnObjectIdentifier enterprise;
AsnNetworkAddress IPAddress;
AsnInteger genericTrap;
AsnInteger specificTrap;
AsnTimeticks timeStamp;
RFC1157VarBindList variableBindings;
UINT i;
char *string = NULL;
while(SnmpMgrGetTrap(&enterprise, &IPAddress, &genericTrap,
&specificTrap, ×tamp, &variableBindings))
{
printf("snmputil: trap generic=%d specific=%d\n",
genericTrap, specificTrap);
if (IPAddress.length == 4) {
printf(" from -> %d.%d.%d.%d\n",
(int)IPAddress.stream[0], (int)IPAddress.stream[1],
(int)IPAddress.stream[2], (int)IPAddress.stream[3]);
}
if (IPAddress.dynamic) {
SNMP_free(IPAddress.stream);
}
for(i=0; i < variableBindings.len; i++)
{
SnmpMgrOidToStr(&variableBindings.list[i].name, &string);
printf("Variable = %s\n", string);
if (string) SNMP_free(string);
printf("Value = ");
SnmpUtilPrintAsnAny(&variableBindings.list[i].value);
} // end for()
printf("\n");
SnmpUtilOidFree(&enterprise);
SnmpUtilVarBindListFree(&variableBindings);
}
}
} // end while()
/*监听函数能够成功,但是代理端发送TRAP后,用抓包工具可以抓到TRAP包,函数WaitForSingleObject却不能跳出,即收不到自陷,看了下windows的服务,SNMPTRAP正在运行,并且防火墙也关了,哪位大虾帮忙分析下原因*/