internal static extern int select(int nfds, [In, Out] fd_set readfds, [In, Out] fd_set writefds, [In, Out] fd_set exceptfds, ref TimeVal timeout);
int ISocketsDriver.select(int nfds, IntPtr readfds, IntPtr writefds, IntPtr exceptfds, ref TimeVal timeout)
{
List <Socket> readList;
List <Socket> writeList;
List <Socket> exceptList;
int ret = 0;
TinyCLRSockets.fd_set read = IntPtrToTinyCLRFdSet(readfds);
TinyCLRSockets.fd_set write = IntPtrToTinyCLRFdSet(writefds);
TinyCLRSockets.fd_set except = IntPtrToTinyCLRFdSet(exceptfds);
if (!TinyCLRFdSetToFdSet(read, out readList))
{
return(ReturnError(SocketError.NotSocket));
}
if (!TinyCLRFdSetToFdSet(write, out writeList))
{
return(ReturnError(SocketError.NotSocket));
}
if (!TinyCLRFdSetToFdSet(except, out exceptList))
{
return(ReturnError(SocketError.NotSocket));
}
if ((readList != null && readList.Count > 0) ||
(writeList != null && writeList.Count > 0) ||
(exceptList != null && exceptList.Count > 0))
{
try
{
//Socket.Select(readList, writeList, exceptList, timeout.tv_usec);
InternalSelect(readList, writeList, exceptList);
}
catch (SocketException se)
{
ret = ReturnError(se.SocketErrorCode);
}
}
if (!FilterFd_set(readList, read))
{
return(ReturnError(SocketError.NotSocket));
}
if (!FilterFd_set(writeList, write))
{
return(ReturnError(SocketError.NotSocket));
}
if (!FilterFd_set(exceptList, except))
{
return(ReturnError(SocketError.NotSocket));
}
TinyCLRFdSetToIntPtr(read, readfds);
TinyCLRFdSetToIntPtr(write, writefds);
TinyCLRFdSetToIntPtr(except, exceptfds);
if (ret != (int)SocketError.SocketError)
{
if (readList != null)
{
ret += readList.Count;
}
if (writeList != null)
{
ret += writeList.Count;
}
if (exceptList != null)
{
ret += exceptList.Count;
}
}
return(ret);
}
