WSAEWOULDBLOCK    102 src/simh/sim_sock.c         {WSAEWOULDBLOCK,  "Operation would block"},
WSAEWOULDBLOCK    984 src/simh/sim_sock.c         if ((WSAGetLastError () != WSAEWOULDBLOCK) &&
WSAEWOULDBLOCK   1010 src/simh/sim_sock.c     if (err != WSAEWOULDBLOCK)
WSAEWOULDBLOCK   1144 src/simh/sim_sock.c     if (err == WSAEWOULDBLOCK)                          /* no data */
WSAEWOULDBLOCK   1168 src/simh/sim_sock.c     if (err == WSAEWOULDBLOCK)                          /* no data */