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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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SCTP_SENDV(3) Linux SCTP_SENDV(3)
sctp_sendv - Send messages from a SCTP socket with an extensible
way.
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/sctp.h>
int sctp_sendv(int sd, const struct iovec * iov, int iovcnt,
struct sockaddr *addrs, int addrcnt, void * info,
socklen_t infolen, unsigned int infotype, int flags);
sctp_sendv provides an extensible way for an application to
communicate different send attributes to the SCTP stack when
sending a message. There are three types of attributes that can be
used to describe a message to be sent. They are struct
sctp_sndinfo, struct sctp_prinfo, and struct sctp_authinfo. The
following structure, sctp_sendv_spa, is defined to be used when
more than one of the above attributes are needed to describe a
message to be sent.
struct sctp_sendv_spa {
uint32_t sendv_flags;
struct sctp_sndinfo sendv_sndinfo;
struct sctp_prinfo sendv_prinfo;
struct sctp_authinfo sendv_authinfo;
};
The sendv_flags field holds a bitwise OR of
SCTP_SEND_SNDINFO_VALID, SCTP_SEND_PRINFO_VALID, and
SCTP_SEND_AUTHINFO_VALID indicating if the
sendv_sndinfo/sendv_prinfo/sendv_authinfo fields contain valid
information.
sd is the socket descriptor. iov is the gather buffer, the data
in the buffer is treated as a single user message. iovcnt is the
number of elements in iov. addrs is an array of addresses to be
used to set up an association or a single address to be used to
send the message, and NULL is passed in if the caller neither
wants to set up an association nor wants to send the message to a
specific address. addrcnt is the number of addresses in the addrs
array. info is a pointer to the buffer containing the attribute
associated with the message to be sent, and the type is indicated
by the info_type parameter. infolen is the length of info, in
bytes. infotype identifies the type of the information provided
in info ,and the current defined values are as follows:
SCTP_SENDV_NOINFO
No information is provided. The parameter info is a NULL
pointer, and infolen is 0.
SCTP_SENDV_SNDINFO
The parameter info is pointing to a struct sctp_sndinfo.
SCTP_SENDV_PRINFO
The parameter info is pointing to a struct sctp_prinfo.
SCTP_SENDV_AUTHINFO
The parameter info is pointing to a struct sctp_authinfo.
SCTP_SENDV_SPA
The parameter info is pointing to a struct sctp_sendv_spa.
flags The same flags as used by the sendmsg() call flags (e.g.,
MSG_DONTROUTE).
On success, sctp_sendv returns the number of bytes sent or -1 if
an error occurred.
sctp(7) sctp_bindx(3), sctp_connectx(3), sctp_send(3),
sctp_recvmsg(3), sctp_recvv(3), sctp_peeloff(3),
sctp_getpaddrs(3), sctp_getladdrs(3), sctp_opt_info(3),
This page is part of the lksctp-tools (Linux kernel SCTP tools)
project. Information about the project can be found at [unknown
-- if you know, please contact man-pages@man7.org] If you have a
bug report for this manual page, send it to sctp@vger.kernel.org.
This page was obtained from the project's upstream Git repository
⟨https://github.com/sctp/lksctp-tools.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2024-09-26.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
Linux 4.16 2018-04-29 SCTP_SENDV(3)
Pages that refer to this page: sctp_bindx(3), sctp_connectx(3), sctp_getladdrs(3), sctp_getpaddrs(3), sctp_opt_info(3), sctp_peeloff(3), sctp_recvmsg(3), sctp_recvv(3), sctp_send(3), sctp_sendmsg(3), sctp(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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