sctp_recvmsg(3socket) [sunos man page]
sctp_recvmsg(3SOCKET) Sockets Library Functions sctp_recvmsg(3SOCKET) NAME
sctp_recvmsg - receive message from an SCTP socket SYNOPSIS
cc [ flag... ] file... -lsocket -lnsl -lsctp [ library... ] #include <sys/types.h> #include <sys/socket.h> #include <netinet/sctp.h> ssize_t sctp_recvmsg(int s, void *msg, size_t len, struct sockaddr *from, socklen_t *fromlen, struct sctp_sndrcvinfo *sinfo, int *msg_flags); DESCRIPTION
The sctp_recvmsg() function receives a message from the SCTP endpoint s. In addition to specifying the message buffer msg and the length len of the buffer, the following parameters can be set: from Pointer to an address, filled in with the sender's address fromlen Size of the buffer associated with the from parameter sinfo Pointer to an sctp_sndrcvinfo structure, filled in upon the receipt of the message msg_flags Message flags such as MSG_CTRUNC, MSG_NOTIFICATION, MSG_EOR The sinfo parameter is filled in only when the caller has enabled sctp_data_io_events by calling setsockopt() with the socket option SCTP_EVENTS. RETURN VALUES
Upon successful completion, the sctp_recvmsg() function returns the number of bytes received. The function returns -1 if an error occurs. ERRORS
The sctp_recvmsg() function fails under the following conditions. EBADF The s argument is an invalid file descriptor. ENOTSOCK The s argument is not a socket. EOPNOTSUPP MSG_OOB is set as a flag. ENOTCONN There is no established association. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
accept(3SOCKET), bind(3SOCKET), connect(3SOCKET), in.h(3HEAD), libsctp(3LIB), listen(3SOCKET), recvmsg(3SOCKET), sctp_opt_info(3SOCKET), setsockopt(3SOCKET), socket(3SOCKET), socket.h(3HEAD), sctp(7P) SunOS 5.10 14 Jul 2004 sctp_recvmsg(3SOCKET)
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sctp_sendmsg(3SOCKET) Sockets Library Functions sctp_sendmsg(3SOCKET) NAME
sctp_sendmsg - send message from an SCTP socket SYNOPSIS
cc [ flag... ] file... -lsocket -lnsl -lsctp [ library... ] #include <sys/types.h> #include <sys/socket.h> #include <netinet/sctp.h> ssize_t sctp_sendmsg(int s, const void *msg, size_t len, const struct sockaddr *to, socklen_t tolen, uint32_t ppid, uint32_t flags, uint16_t stream_no, uint32_t timetolive, uint32_t context); DESCRIPTION
The sctp_sendmsg() function sends a message from the SCTP endpoint s. In addition to specifying msg as the message buffer and len as the length of the buffer, the following parameters can be set: to Destination address tolen Length of the destination address ppid Application-specified payload protocol identifier stream_no Target stream for the message timetolive Time period in milliseconds after which the message expires if transmission for the message has not been started. A value of 0 indicates that the message does not expire. When the MSG_PR_SCTP flag is set the message expires, even if transmission has started, unless the entire message is transmitted within the timetolive period. context Value returned when an error occurs in sending a message The flags parameter is formed from the bitwise OR of zero or more of the following flags: MSG_UNORDERED This flag requests un-ordered delivery of the message. If this flag is clear the message is considered an ordered send. MSG_ABORT When set, this flag causes the specified association to abort by sending an ABORT to the peer. The flag is used only for one-to-many style SCTP socket associations. MSG_EOF When set, this flag invokes a graceful shutdown on a specified association. The flag is used only for one-to-many style SCTP socket associations. MSG_PR_SCTP This flag indicates that the message is treated as partially reliable. The message expires unless the entire message is successfully transmitted within the time period specified in the timetolive parameter. MSG_PR_SCTP implements timed reliability service for SCTP messages. As yet, no common standard has been defined for the service and the interface is considered unstable. The initial call to sctp_sendmsg() can be used to create an association, but it cannot be used subsequently on an existing association. Since sctp_sendmsg() always uses 0 internally as the association ID, it is not suitable for use on one-to-many sockets. RETURN VALUES
Upon successful completion, the sctp_sendmsg() function returns the number of bytes sent. The function returns -1 if an error occurs. ERRORS
The sctp_sendmsg() function will fail if: EBADF The s argument is an invalid file descriptor. ENOTSOCK The s argument is not a socket. EOPNOTSUPP MSG_OOB is set as a flag. EOPNOTSUPP MSG_ABORT or MSG_EOF is set on a one-to-one style SCTP socket. EPIPE The socket is shutting down and no more writes are allowed. EAGAIN The socket is non-blocking and the transmit queue is full. ENOTCONN There is no established association. EINVAL Control message length is incorrect. EINVAL Specified destination address does not belong to the association. EAFNOSUPPORT Address family of the specified destination address is other than AF_INET or AF_INET6. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
accept(3SOCKET), bind(3SOCKET), connect(3SOCKET), in.h(3HEAD), libsctp(3LIB), listen(3SOCKET), sendmsg(3SOCKET), socket(3SOCKET), socket.h(3HEAD), attributes(5), sctp(7P) SunOS 5.11 22 Aug 2007 sctp_sendmsg(3SOCKET)