User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |

---

   sctp_connectx    ( 3 )

---

---

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),

---