sysaccept

/*
 * call-seq:
 *      socket.sysaccept => [client_socket_fd, client_sockaddr]
 * 
 * Accepts an incoming connection returnings an array containg the (integer)
 * file descriptor for the incoming connection, _client_socket_fd_,
 * and a string that contains the +struct+ sockaddr information
 * about the caller, _client_sockaddr_.
 * 
 * === Example
 *      # In one script, start this first
 *      require 'socket'
 *      include Socket::Constants
 *      socket = Socket.new( AF_INET, SOCK_STREAM, 0 )
 *      sockaddr = Socket.pack_sockaddr_in( 2200, 'localhost' )
 *      socket.bind( sockaddr )
 *      socket.listen( 5 )
 *      client_fd, client_sockaddr = socket.sysaccept
 *      client_socket = Socket.for_fd( client_fd )
 *      puts "The client said, '#{client_socket.readline.chomp}'"
 *      client_socket.puts "Hello from script one!"
 *      socket.close
 * 
 *      # In another script, start this second
 *      require 'socket'
 *      include Socket::Constants
 *      socket = Socket.new( AF_INET, SOCK_STREAM, 0 )
 *      sockaddr = Socket.pack_sockaddr_in( 2200, 'localhost' )
 *      socket.connect( sockaddr )
 *      socket.puts "Hello from script 2." 
 *      puts "The server said, '#{socket.readline.chomp}'"
 *      socket.close
 * 
 * Refer to Socket#accept for the exceptions that may be thrown if the call
 * to _sysaccept_ fails. 
 * 
 * === See
 * * Socket#accept
 */
static VALUE
sock_sysaccept(sock)
    VALUE sock;
{
    rb_io_t *fptr;
    VALUE sock2;
    char buf[1024];
    socklen_t len = sizeof buf;

    GetOpenFile(sock, fptr);
    sock2 = s_accept(0,fileno(fptr->f),(struct sockaddr*)buf,&len);

    return rb_assoc_new(sock2, rb_str_new(buf, len));
}