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GETPEERNAME(2)             Linux Programmer's Manual            GETPEERNAME(2)



NAME
       getpeername - get name of connected peer socket

SYNOPSIS
       #include <&lt;sys/socket.h>&gt;

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

DESCRIPTION
       getpeername()  returns the name of the peer connected to socket s.  The
       namelen argument 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 argument points to memory not in a valid  part  of  the
              process address space.

       EINVAL namelen is invalid (e.g., is negative).

       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), POSIX.1-2001.

NOTES
       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)

COLOPHON
       This  page  is  part of release 3.05 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.



Linux                             1993-07-30                    GETPEERNAME(2)