sctp_connectx(3) [freebsd man page]

SCTP_CONNECTX(3)					   BSD Library Functions Manual 					  SCTP_CONNECTX(3)

NAME

     sctp_connectx -- connect an SCTP socket with multiple destination addresses

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

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

     int
     sctp_connectx(int sd, struct sockaddr *addrs, int addrcnt, sctp_assoc_t *id);

DESCRIPTION

     The sctp_connectx() call attempts to initiate an association to a peer SCTP endpoint.  The call operates similarly to connect() but it also
     provides the ability to specify multiple destination addresses for the peer.  This allows a fault tolerant method of initiating an associa-
     tion.  When one of the peers addresses is unreachable, the subsequent listed addresses will also be used to set up the association with the
     peer.

     The user also needs to consider that any address listed in an sctp_connectx() call is also considered "confirmed".  A confirmed address is
     one in which the SCTP transport will trust is a part of the association and it will not send a confirmation heartbeat to it with a random
     nonce.

     If the peer SCTP stack does not list one or more of the provided addresses in its response message then the extra addresses sent in the
     sctp_connectx() call will be silently discarded from the association.  On successful completion the provided id will be filled in with the
     association identification of the newly forming association.

RETURN VALUES

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

ERRORS

     The sctp_connectx() function can return the following errors:

     [EINVAL]		An address listed has an invalid family or no addresses were provided.

     [E2BIG]		The size of the address list exceeds the amount of data provided.

     [EBADF]		The argument s is not a valid descriptor.

     [ENOTSOCK] 	The argument s is not a socket.

SEE ALSO

     connect(2), sctp(4)

BSD
								   June 19, 2007							       BSD

sctp_getpaddrs(3SOCKET) 				     Sockets Library Functions					   sctp_getpaddrs(3SOCKET)

NAME

       sctp_getpaddrs, sctp_freepaddrs - returns all peer addresses on an SCTP association

SYNOPSIS

       cc [ flag... ] file... -lsocket -lnsl -lsctp [ library... ]
       #include <sys/types.h>
       #include <sys/socket.h>
       #include <netinet/sctp.h>

       int sctp_getpaddrs(int sock, sctp_assoc_t id, void **addrs, void sctp_freepaddrs(void *addrs);

DESCRIPTION

       The  sctp_getpaddrs()  queries  the peer addresses in an SCTP association. The sctp_freepaddrs() function releases resources that are allo-
       cated to hold the addresses.

       The sctp_getpaddrs() function returns all the peer addresses in the SCTP association identified by sock. On completion addrs  points  to  a
       dynamically  allocated array of sockaddr_in structures for an Internet Protocol (IPv4) socket or an array of sockaddr_in6 structures for an
       Internet Protocol Version 6 (IPv6) socket. The addrs parameter must not be NULL.  For an IPv4 SCTP socket, the addresses  returned  in  the
       sockaddr_in  structures	are IPv4 addresses. For an IPv6 SCTP socket, the addresses in the sockaddr_in6 structures can be IPv6 addresses or
       IPv4-mapped IPv6 addresses.

       If sock is a one-to-many style SCTP socket, id specifies the association of interest. If sock is a one-to-one  style  SCTP  socket,  id	is
       ignored.

       The  sctp_freepaddrs()  function frees the resources allocated by sctp_getpaddrs(). The addrs parameter is the array of addresses allocated
       by sctp_getpaddrs().

RETURN VALUES

       Upon successful completion, the sctp_getpaddrs() function returns the number of addresses in  the  addrs  array.  Otherwise,  the  function
       returns -1 and sets errno to indicate the error.

ERRORS

       The sctp_getpaddrs() succeeds unless one of the following conditions exist.

       EBADF	       The sock argument is an invalid file descriptor.

       ENOTSOCK        The sock argument is not a socket.

       EINVAL	       The addrs argument is NULL.

       EINVAL	       The id argument is an invalid association identifier for a one-to-many style STP socket.

       ENOTCONN        The specified socket is not connected.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       bind(3SOCKET), in.h(3HEAD), libsctp(3LIB), sctp_freeladdrs(3SOCKET), sctp_getladdrs(3SOCKET), socket(3SOCKET), inet(7P), inet6(7P), ip(7P),
       ip6(7P)sctp(7P)

SunOS 5.10							    26 Feb 2004 					   sctp_getpaddrs(3SOCKET)