getpeername(1) [v7 man page]

GETPEERNAME(1)						      General Commands Manual						    GETPEERNAME(1)

NAME

       getpeername - get name of connected TCP/IP peer

SYNOPSIS

       getpeername [-n] [-p protocol]

DESCRIPTION

       getpeername  prints  the  IP address and service name (port number) of the remote peer connected to standard input.  The IP address and the
       service name are printed on the same line, separated by one space.

OPTIONS

       -n     Don't translate IP addresses and port numbers to names.

       -p protocol
	      Force getpeername to use protocol as the protocol when translating port numbers to service names.  Protocol  can	be  tcp  and  udp.
	      Normally, getpeername automatically determines what type of socket it is connected to.

SEE ALSO

       getpeername(3).

BUGS

       Only works on IP sockets.

								   1997 April 13						    GETPEERNAME(1)

GETPEERNAME(2)						      BSD System Calls Manual						    GETPEERNAME(2)

NAME

     getpeername -- get address of connected peer

SYNOPSIS

     #include <sys/socket.h>

     int
     getpeername(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len);

DESCRIPTION

     The getpeername() function returns the address of the peer connected to the specified socket.

     The address_len parameter should be initialized to indicate the amount of space pointed to by address.  On return it contains the actual size
     of the address returned (in bytes).

     The address is truncated if the buffer provided is too small.

RETURN VALUES

     The getpeername() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to
     indicate the error.

ERRORS

     The call succeeds unless:

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

     [EFAULT]		The address parameter points to memory not in a valid part of the process address space.

     [EINVAL]		socket has been shut down.

     [ENOBUFS]		Insufficient resources were available in the system to perform the operation.

     [ENOTCONN] 	Either the socket is not connected or it has not had the peer pre-specified.

     [ENOTSOCK] 	The argument socket refers to something other than a socket (e.g., a file).

     [EOPNOTSUPP]	getpeername() is not supported for the protocol in use by socket.

SEE ALSO

     accept(2), bind(2), getsockname(2), socket(2)

HISTORY

     The getpeername() function call appeared in 4.2BSD.

4.2 Berkeley Distribution					   June 4, 1993 					 4.2 Berkeley Distribution