connect(3SOCKET)					     Sockets Library Functions						  connect(3SOCKET)

NAME

       connect - initiate a connection on a socket

SYNOPSIS

       cc [ flag ... ] file ... -lsocket  -lnsl  [ library ... ]
       #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, connect() specifies the peer with which the socket is to be associated. This
       address is the address to which datagrams are to be sent if a receiver is not explicitly designated. This address is the only address  from
       which  datagrams are to be received. If the socket s is of type SOCK_STREAM, connect() attempts to make a connection to another socket. The
       other socket is specified by name. name is an address in the communication space of the socket. Each  communication  space  interprets  the
       name  parameter in its own way. If s is not bound, then s will be bound to an address selected by the underlying transport provider. Gener-
       ally, stream sockets can successfully connect() only once. Datagram sockets can use connect() multiple times to change  their  association.
       Datagram sockets can dissolve the association by connecting to a null address.

RETURN VALUES

       If the connection or binding succeeds, 0 is returned. Otherwise, -1 is returned and sets errno to indicate the error.

ERRORS

       The call fails if:

       EACCES		Search permission is denied for a component of the path prefix of the pathname in name.

       EADDRINUSE	The address is already in use.

       EADDRNOTAVAIL	The specified address is not available on the remote machine.

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

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

       EBADF		s is not a valid descriptor.

       ECONNREFUSED	The  attempt  to  connect  was	forcefully  rejected. The calling program should close(2) the socket descriptor, and issue
			another socket(3SOCKET) call to obtain a new descriptor before attempting another connect() call.

       EINPROGRESS	The socket is non-blocking, and the connection cannot be completed immediately. You can use  select(3C)  to  complete  the
			connection by selecting the socket for writing.

       EINTR		The  connection attempt was interrupted before any data arrived by the delivery of a signal. The connection, however, will
			be established asynchronously.

       EINVAL		namelen is not the size of a valid address for the specified address family.

       EIO		An I/O error occurred while reading from or writing to the file system.

       EISCONN		The socket is already connected.

       ELOOP		Too many symbolic links were encountered in translating the pathname in name.

       ENETUNREACH	The network is not reachable from this host.

       EHOSTUNREACH	The remote host is not reachable from this host.

       ENOENT		A component of the path prefix of the pathname in name does not exist.

       ENOENT		The socket referred to by the pathname in name does not exist.

       ENOSR		There were insufficient STREAMS resources available to complete the operation.

       ENXIO		The server exited before the connection was complete.

       ETIMEDOUT	Connection establishment timed out without establishing a connection.

       EWOULDBLOCK	The socket is marked as non-blocking, and the requested operation would block.

       The following errors are specific to connecting names in the UNIX domain.  These errors might not apply in future versions of the UNIX  IPC
       domain.

       ENOTDIR	     A component of the path prefix of the pathname in name is not a directory.

       ENOTSOCK      s is not a socket.

       ENOTSOCK      name is not a socket.

       EPROTOTYPE    The  file	that  is referred to by name is a socket of a type other than type s. For example, s is a SOCK_DGRAM socket, while
		     name refers to a SOCK_STREAM socket.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       close(2), accept(3SOCKET), getsockname(3SOCKET), select(3C), socket(3SOCKET), socket.h(3HEAD), attributes(5)

SunOS 5.11							    08 Mar 2005 						  connect(3SOCKET)