NAME

       getpeername — get name of connected peer

LIBRARY

       Standard C Library (libc, -lc)

SYNOPSIS

       #include <sys/types.h>
       #include <sys/socket.h>

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

DESCRIPTION

       The  getpeername()  system call 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 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 s is not a valid descriptor.

       [ECONNRESET]       The connection has been reset by the peer.

       [EINVAL]           The value of the namelen argument is not valid.

       [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 argument points to memory not in a valid part of the process address space.

SEE ALSO

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

HISTORY

       The getpeername() system call appeared in 4.2BSD.

Debian                                            June 4, 1993                                    GETPEERNAME(2)