www.delorie.com/gnu/docs/glibc/libc_334.html   search  
 
Buy the book!


The GNU C Library

[ < ] [ > ]   [ << ] [ Up ] [ >> ]         [Top] [Contents] [Index] [ ? ]

16.9.4 Who is Connected to Me?

Function: int getpeername (int socket, struct sockaddr *addr, socklen_t *length-ptr)
The getpeername function returns the address of the socket that socket is connected to; it stores the address in the memory space specified by addr and length-ptr. It stores the length of the address in *length-ptr.

See section 16.3 Socket Addresses, for information about the format of the address. In some operating systems, getpeername works only for sockets in the Internet domain.

The return value is 0 on success and -1 on error. The following errno error conditions are defined for this function:

EBADF
The argument socket is not a valid file descriptor.

ENOTSOCK
The descriptor socket is not a socket.

ENOTCONN
The socket socket is not connected.

ENOBUFS
There are not enough internal buffers available.


  webmaster     delorie software   privacy  
  Copyright 2003   by The Free Software Foundation     Updated Jun 2003