TCP長連線和Keepalive詳解
阿新 • • 發佈：2019-02-16
// 開啟KeepAliveBOOL bKeepAlive = TRUE;
int nRet = ::setsockopt(socket_handle, SOL_SOCKET, SO_KEEPALIVE, (char*)&bKeepAlive, sizeof(bKeepAlive));
if (nRet == SOCKET_ERROR)
{
return FALSE;
}
// 設定KeepAlive引數tcp_keepalive alive_in = {0};
tcp_keepalive alive_out = {0};
alive_in.keepalivetime =5000; // 開始首次KeepAlive探測前的TCP空閉時間
unsigned long ulBytesReturn =0;
nRet = WSAIoctl(socket_handle, SIO_KEEPALIVE_VALS, &alive_in, sizeof(alive_in),
&alive_out, sizeof(alive_out), &ulBytesReturn, NULL, NULL);
if (nRet == SOCKET_ERROR)
{
return FALSE;
}
int nRet = ::setsockopt(socket_handle, SOL_SOCKET, SO_KEEPALIVE, (char*)&bKeepAlive, sizeof(bKeepAlive));
if (nRet == SOCKET_ERROR)
{
return FALSE;
}
// 設定KeepAlive引數tcp_keepalive alive_in = {0};
tcp_keepalive alive_out = {0};
alive_in.keepalivetime =5000; // 開始首次KeepAlive探測前的TCP空閉時間
unsigned long ulBytesReturn =0;
nRet = WSAIoctl(socket_handle, SIO_KEEPALIVE_VALS, &alive_in, sizeof(alive_in),
&alive_out, sizeof(alive_out), &ulBytesReturn, NULL, NULL);
if (nRet == SOCKET_ERROR)
{
return FALSE;
}