opendarwin man page for getpeername

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

NAME
     getpeername -- get name of connected peer

SYNOPSIS
     #include <sys/socket.h>

     int
     getpeername(int s, struct sockaddr *name, int *namelen);

DESCRIPTION
     Getpeername() returns the name of the peer connected to socket s.	The namelen parameter should be initialized to indicate the amount of
     space pointed to by name.	On return it contains the actual size of the name returned (in bytes).	The name is truncated if the buffer pro-
     vided is too small.

DIAGNOSTICS
     A 0 is returned if the call succeeds, -1 if it fails.

ERRORS
     The call succeeds unless:

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

     [ENOTSOCK] 	The argument s is a file, not a socket.

     [ENOTCONN] 	The socket is not connected.

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

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

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

HISTORY
     The getpeername() function call appeared in 4.2BSD.

4.2 Berkeley Distribution					   June 4, 1993 					 4.2 Berkeley Distribution