getpeername

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



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.

       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.

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 BSD 4.* and libc4 and libc5 have).  Some POSIX confusion  resulted
       in the present socklen_t.  The draft standard has not been adopted yet,
       but glibc2  already  follows  it  and  also  has  socklen_t.  See  also
       accept(2).

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



BSD Man Page                      1993-07-30                    GETPEERNAME(2)