CONNECT(2)                                                          CONNECT(2)



NAME
     connect - initiate a connection on a socket

SYNOPSIS
     #include <sys/types.h>
     #include <sys/socket.h>

     int connect (int s, const struct sockaddr *name, int namelen);

DESCRIPTION
     The parameter s is a socket.  If it is of type SOCK_DGRAM, then this call
     specifies the peer with which the socket is to be associated; this
     address is that to which datagrams are to be sent, and the only address
     from which datagrams are to be received.  If the socket is of type
     SOCK_STREAM, then this call attempts to make a connection to another
     socket.  The other socket is specified by name, which is an address in
     the communications space of the socket.  Each communications space
     interprets the name parameter in its own way.  Generally, stream sockets
     may successfully connect only once; datagram sockets may use connect
     multiple times to change their association.  Datagram sockets may
     dissolve the association by connecting to an invalid address, such as a
     zero-filled address.

RETURN VALUE
     If the connection or binding succeeds, then 0 is returned.  Otherwise a
     -1 is returned, and a more specific error code is stored in errno.

ERRORS
     The call fails if:

     [EBADF]             S is not a valid descriptor.

     [ENOTSOCK]          S is a descriptor for a file, not a socket.

     [EADDRNOTAVAIL]     The specified address is not available on this
                         machine.

     [EAFNOSUPPORT]      Addresses in the specified address family cannot be
                         used with this socket.

     [EISCONN]           The socket is already connected.

     [ETIMEDOUT]         Connection establishment timed out without
                         establishing a connection.

     [ECONNREFUSED]      The attempt to connect was forcefully rejected.

     [ENETUNREACH]       The network isn't reachable from this host.

     [EADDRINUSE]        The address is already in use.





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CONNECT(2)                                                          CONNECT(2)



     [EFAULT]            The name parameter specifies an area outside the
                         process address space.

     [EINPROGRESS]       The socket is non-blocking and the connection cannot
                         be completed immediately.  It is possible to
                         select(2) for completion by selecting the socket for
                         writing.

     [EALREADY]          The socket is non-blocking and a previous connection
                         attempt has not yet been completed.

     See also the protocol-specific manual pages for other error values.

SEE ALSO
     accept(2), select(2), socket(2), tcp(7P), udp(7P), unix(7F)

NOTE
     ABI-compliant versions of the above call can be obtained from
     libsocket.so.




































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