package Net::HTTP::Methods;

require 5.005;  # 4-arg substr

...

sub my_read {
    die if @_ > 3;
    my $self = shift;
    my $len = $_[1];
    for (${*$self}{'http_buf'}) {
	if (length) {
	    $_[0] = substr($_, 0, $len, "");
	    return length($_[0]);
	}
	else {
	    die "read timeout" unless $self->can_read; #Break Point#
	    return $self->sysread($_[0], $len);
	}
    }
}

...

sub can_read {
    my $self = shift;
    return 1 unless defined(fileno($self));
    return 1 if $self->isa('IO::Socket::SSL') && $self->pending;

    # With no timeout, wait forever.  An explict timeout of 0 can be
    # used to just check if the socket is readable without waiting.
    my $timeout = @_ ? shift : (${*$self}{io_socket_timeout} || undef);

    my $fbits = '';
    vec($fbits, fileno($self), 1) = 1;
  SELECT:
    {
        my $before;
        $before = time if $timeout;
        my $nfound = select($fbits, undef, undef, $timeout);
        if ($nfound < 0) {
            if ($!{EINTR} || $!{EAGAIN}) {
                # don't really think EAGAIN can happen here
                if ($timeout) {
                    $timeout -= time - $before;
                    $timeout = 0 if $timeout < 0;
                }
                redo SELECT;
            }
            die "select failed: $!";
        }
        return $nfound > 0;
    }
}