TCP/IP Programming Manual

Recovery
Ensure that you have specified a valid hostname or address. If so, ensure that the remote host
can be reached from the local host.
EINPROGRESS (4102)
EINPROGRESS
Cause
Operation now in progress. A connect_nw call was attempted on a non-blocking socket where
connect_nw had already been called on that socket.
Effect
The call failed.
Recovery
Wait and retry the operation.
EINTR (4004)
EINTR
Cause
While a process was in the sleep mode waiting for an event, it received an unexpected signal,
not the wait-for event.
Effect
The call failed.
Recovery
Retry the call.
EINVAL (4022)
EINVAL
Cause
The specified socket was already bound to an address or the address_len was incorrect.
Effect
The call failed.
Recovery
Corrective action depends on the function and the circumstances. For a list of valid arguments,
see the description of the function that caused the error.
EIO (4005)
EIO
Cause
I/O error. Some physical I/O error has occurred. In some cases, this error may occur on a call
following the one to which it actually applies.
Effect
The call failed.
Recovery
Examine the preceding calls. Retry the call.
EISCONN (4122)
EISCONN
Cause
A call to sendto, t_sendto_nw, recvfrom, recvfrom_nw, or t_recvfrom_nw was made
on a socket that was connected.
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