NAME

       sctp_sendmsg - Send a message from a SCTP socket.

SYNOPSIS

       #include <sys/types.h>
       #include <sys/socket.h>
       #include <netinet/sctp.h>

       int sctp_sendmsg(int sd, const void * msg, size_t len,
                        struct sockaddr *to, socklen_t tolen,
                        uint32_t ppid, uint32_t flags,
                        uint16_t stream_no, uint32_t timetolive,
                        uint32_t context);

DESCRIPTION

       sctp_sendmsg  is  a wrapper library function that can be used to send a message from a socket while using
       the advanced features of SCTP.  sd is the socket descriptor from which the message pointed to by  msg  of
       length  len  is  sent.   to  is  the  destination  address  of the message and tolen is the length of the
       destination address.  stream_no identifies the stream number that the application  wishes  to  send  this
       message to.  flags parameter is composed of a bitwise OR of the following values.

       SCTP_UNORDERED
              This flags requests the un-ordered delivery of the message.

       SCTP_ADDR_OVER
              This  flag,  in the one-to-many style, requests the SCTP stack to override the primary destination
              address with address specified in to.

       SCTP_ABORT
              Setting this flag causes the specified association to abort by sending an  ABORT  message  to  the
              peer(one-to-many  style  only). The ABORT chunk will contain an error cause 'User Initiated Abort'
              with cause code 12. The cause specific information of this error cause is provided in msg.

       SCTP_EOF
              Setting this flag invokes the SCTP graceful shutdown procedure on the specific association(one-to-
              many style only).

       timetolive  specifies  the time duration in milliseconds. The sending side will expire the message if the
       message has not been sent to the peer within this time period.  A value of 0 indicates  that  no  timeout
       should  occur  on  this message.  ppid is an opaque unsigned value that is passed to the remote end along
       with the message.  context is a 32 bit opaque value that is passed back to the upper layer along with the
       undelivered message if an error occurs on the send of the message.

RETURN VALUE

       On success, sctp_sendmsg returns the number of bytes sent or -1 if an error occurred.

SEE ALSO

       sctp(7)     sctp_bindx(3),     sctp_connectx(3),    sctp_send(3),    sctp_recvmsg(3),    sctp_peeloff(3),
       sctp_getpaddrs(3), sctp_getladdrs(3), sctp_opt_info(3),