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Peek at the incoming data on the stream. Returns the number of bytes read. Throws an exception on failure.
template<
typename MutableBufferSequence>
std::size_t peek(
const MutableBufferSequence & buffers);
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Peek at the incoming data on the stream. Returns the number of bytes read, or 0 if an error occurred.
template<
typename MutableBufferSequence>
std::size_t peek(
const MutableBufferSequence & buffers,
boost::system::error_code & ec);
» more...