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#### buffered_stream::in_avail

Determine the amount of data that may be read without blocking.

    std::size_t in_avail();

    std::size_t in_avail(
        boost::system::error_code & ec);

| Copyright © 2003 - 2008 Christopher M. Kohlhoff Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)