инициировать подключение к сокету SCTP, используя несколько адресов назначения (initiate a connection on an SCTP socket using multiple destination addresses.)
Имя (Name)
sctp_connectx - initiate a connection on an SCTP socket using
multiple destination addresses.
Синопсис (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);
Описание (Description)
sctp_connectx initiates a connection to a set of addresses passed
in the array addrs to/from the socket sd. addrcnt is the number
of addresses in the array.
If sd is an IPv4 socket, the addresses passed must be IPv4
addresses. If sd is an IPv6 socket, the addresses passed can be
either IPv4 or IPv6 addresses.
addrs is a pointer to an array of one or more socket addresses.
Each address is contained in its appropriate structure(i.e.
struct sockaddr_in or struct sockaddr_in6). The family of the
address type must be used to distinguish the address length. The
caller specifies the number of addresses in the array with
addrcnt.
id is a pointer to the association id and, if provided, will be
set to the identifier of the newly created association.
Возвращаемое значение (Return value)
On success, 0 is returned. On failure, -1 is returned, and errno
is set appropriately.
Ошибки (Error)
EBADF sd is not a valid descriptor.
ENOTSOCK
sd is a descriptor for a file, not a socket.
EFAULT Error while copying in or out from the user address space.
EINVAL Invalid port or address.
EACCES The address is protected, and the user is not the super-
user.
EISCONN
The socket is already connected.
ECONNREFUSED
No one listening on the remote address.
ETIMEDOUT
Timeout while attempting connection. The server may be too
busy to accept new connections. Note that for IP sockets
the timeout may be very long when syncookies are enabled
on the server.
ENETUNREACH
Network is unreachable.
EADDRINUSE
Local address is already in use.
EINPROGRESS
The socket is non-blocking and the connection cannot be
completed immediately. It is possible to select(2) or
poll(2) for completion by selecting the socket for
writing. After select indicates writability, use
getsockopt(2) to read the SO_ERROR option at level
SOL_SOCKET to determine whether connect completed
successfully (SO_ERROR is zero) or unsuccessfully
(SO_ERROR is one of the usual error codes listed here,
explaining the reason for the failure).
EALREADY
The socket is non-blocking and a previous connection
attempt has not yet been completed.
EAGAIN No more free local ports or insufficient entries in the
routing cache. For PF_INET see the
net.ipv4.ip_local_port_range sysctl in ip(7) on how to
increase the number of local ports.
EAFNOSUPPORT
The passed address didn't have the correct address family
in its sa_family field.
EACCES, EPERM
The user tried to connect to a broadcast address without
having the socket broadcast flag enabled or the connection
request failed because of a local firewall rule.
Смотри также (See also)
sctp(7) sctp_bindx(3), sctp_sendmsg(3), sctp_sendv(3),
sctp_send(3), sctp_recvmsg(3), sctp_recvv(3), sctp_peeloff(3),
sctp_getpaddrs(3), sctp_getladdrs(3), sctp_opt_info(3),
