JSI Tip 0914. WSAENOBUFS (10055) error.

If you take out your Captain Video Secret Decoder Ring, it becomes clear that this means:

An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.

Not much better.

If you are trying to use an ephemeral (short-lived) TCP port above 5000, this may explain the message. By default, Windows NT 4.0 only supports 5000 ephemeral TCP ports.

You can increase this by navigating to

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParameters

Add Value name MaxUserPort, a type REG_DWORD, and set it to some decimal number in the range of 5000 - 65534.

Once a port is closed, it takes 4 minutes (240 seconds) before the system will reuse it. You can alter this behavior if you

Add Value name TcpTimedWaitDelay as a type REG_DWORD and set it to some decimal number in the range of 30 - 300 seconds.