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NAME

       getpeername - get name of connected peer socket

SYNOPSIS

       #include <sys/socket.h>

       int getpeername(int s, struct sockaddr *name, socklen_t *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  provided  is
       too small.

RETURN VALUE

       On  success,  zero is returned.  On error, -1 is returned, and errno is
       set appropriately.

ERRORS

       EBADF  The argument s is not a valid descriptor.

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

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

       ENOTCONN
              The socket is not connected.

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

CONFORMING TO

       SVr4,  4.4BSD  (the  getpeername()  function  call  first  appeared  in
       4.2BSD).

NOTE

       The  third argument of getpeername() is in reality an ‘int *’ (and this
       is what 4.x BSD and  libc4  and  libc5  have).   Some  POSIX  confusion
       resulted  in  the  present  socklen_t,  also  used  by glibc.  See also
       accept(2).

SEE ALSO

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