Comtrol eCos - Manual (Page 573)

Chapter 38. TCP/IP Library Reference
and the size of the message to be sent made this
impossible.
[EAGAIN] The socket is marked non-blocking and the requested
operation would block.
[ENOBUFS] The system was unable to allocate an internal buffer.
The operation may succeed when buffers become avail-
able.
[ENOBUFS] The output queue for a network interface was full.
This generally indicates that the interface has
stopped sending, but may be caused by transient con-
gestion.
[EACCES] The SO_BROADCAST option is not set on the socket, and
a broadcast address was given as the destination.
[EHOSTUNREACH] The destination address specified an unreachable host.
[EINVAL] The flags parameter is invalid.
[EHOSTDOWN] The destination address specified a host that is down.
[ENETDOWN] The destination address specified a network that is
down.
[ECONNREFUSED] The destination host rejected the message (or a previ-
ous one). This error can only be returned by con-
nected sockets.
[ENOPROTOOPT] There was a problem sending the message. This error
can only be returned by connected sockets.
[EDESTADDRREQ] The socket is not connected, and no destination
address was specified.
[EISCONN] The socket is already connected, and a destination
address was specified.
In addition, send() and sendto() may return the following error:
[EINVAL] len was larger than SSIZE_MAX.
Also, sendmsg() may return the following errors:
[EINVAL] The sum of the iov_len values in the msg_iov array
overflowed an ssize_t.
[EMSGSIZE] The msg_iovlen member of msg was less than 0 or larger
than IOV_MAX.
[EAFNOSUPPORT] Addresses in the specified address family cannot be
used with this socket.
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