getpeername - phpMan

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 param-
       eter 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 appropri-
       ately.

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 opera-
              tion.

       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)

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