500紧急求助！！！谁能帮我解决网络连接问题

[fly21cloud]

我现在分别通过Modem拨号、GPRS、CDMA 1x连接上了网络，我要分别通过这三条连接进行不同的操作，请问我如何控制使用某一条连接？？？
一获得解决方法立即给分！

[microyzy]

是啊

[shilong]

不同的连接IP应该不同
根据IP地址来绑定socket,就达到了控制的目的
use RasEnumConnections to get the list of current connections.

RASCONN * pRasConn = NULL;
DWORD cb;
DWORD dwConnections;
CString sIP_Address;

// use NULL to get the buffer size that we should use
RasEnumConnections(
NULL, &cb, &dwConnections );

// allocate enough memory for the RASCONN array
pRasConn = (RASCONN*)malloc(sizeof(RASCONN)*cb);

// set the first Entry for RasEnumConnections
pRasConn[0].dwSize = sizeof(RASCONN);

// Now get the array of Connections
RasEnumConnections(
pRasConn, &cb, &dwConnections );

// find the first modem connection
for ( int jj=0; jj<dwConnections; jj++ ){
if ( strnicmp(pRasConn[jj].szDeviceType,"modem") == 0 ) {
// we need the PPP Projection
RASPPPIP pppProjection;
pppProjection.dwSize = sizeof(RASPPPIP);
RasGetProjectionInfo(
pRasConn[jj].hrasconn,
RASP_PppIp,
&pppProjection,
&cb );
sIP_Address.Format("%s",
szIpAddress );
break;
}
}

sIP_Address now holds the IP address of the modem device. You could actually do this to get the IP address of all your devices.

[fly21cloud]

我想在指定的拨号连接上建立SOCKET连接，要求此后针对此SOCKET的操作都要在此指定的拨号连接上进行，而不会通过另一个拨号连接进行。
比如说我想在第一个拨号连接上进行Ping操作，同时另外两个拨号连接也存在，如何保证此Ping操作不会通过另外两个网络连接实现？

[Skt32]

请说详细一点

[shilong]

晕,怎么从VC版转这来了?我都变成2个小三角FT~