SCTP_BINDX(3) | Library Functions Manual | SCTP_BINDX(3)

# NAME

`sctp_bindx` —
bind or unbind an SCTP socket to a list of addresses

# LIBRARY

Standard C Library (libc, -lc)

# SYNOPSIS

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

int
`sctp_bindx`(int s, struct sockaddr *addrs, int num, int type);

# DESCRIPTION

The `sctp_bindx`() call binds or unbinds a address or a list of addresses to an SCTP endpoint. This allows a user to bind a subset of addresses. The `sctp_bindx`() call operates similarly to `bind`() but allows a list of addresses and also allows a bind or an unbind. The argument s must be a valid SCTP socket descriptor. The argument addrs is a list of addresses (where the list may be only 1 in length) that the user wishes to bind or unbind to the socket. The argument type must be one of the following values.

`SCTP_BINDX_ADD_ADDR` This value indicates that the listed address(es) need to be added to the endpoint.

`SCTP_BINDX_DEL_ADDR` This value indicates that the listed address(es) need to be removed from the endpoint.

Note that when a user adds or deletes an address to an association if the dynamic address flag net.inet.sctp.auto_asconf is enabled any associations in the endpoint will attempt to have the address(es) added dynamically to the existing association.

# RETURN VALUES

The call returns 0 on success and -1 upon failure.

# ERRORS

The `sctp_bindx`() function can return the following errors:

[`EBADF`]
  The argument s is not a valid descriptor.
[`EINVAL`]
  This value is returned if the type field is not one of the allowed values (see above).
[`ENOMEM`]
  This value is returned if the number of addresses being added causes a memory allocation failure in the call.
[`ENOTSOCK`]
  The argument s is not a socket.

# SEE ALSO

bind(2), sctp(4)

Sockets API Extensions for the Stream Control Transmission Protocol (SCTP), RFC, 6458, December 2011.

# HISTORY

This function first appeared in NetBSD 9.0.

August 1, 2018 | NetBSD 9.5