On Fri, Feb 13, 2009 at 12:22 AM, Igor R
Yes, exactly. Code snippet may be uselese, but I'm using something like
this: boost::asio::read(sock, buf, boost::asio::transfer_at_least(800), myhandler);
and myhandler is never called (because no more data arrives).
So, probably 800 bytes do not arrive, or there's some other issue.
This handler called after each read operation and bytes_transferred each time is 400, but minimum_ is 800.
Look at the implementation of read(): (Note that bytes_transferred passed to the completion_condition is accumulated each time)
template
std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers, CompletionCondition completion_condition, boost::system::error_code& ec) { ec = boost::system::error_code(); boost::asio::detail::consuming_buffers< mutable_buffer, MutableBufferSequence> tmp(buffers); std::size_t total_transferred = 0; tmp.set_max_size(detail::adapt_completion_condition_result( completion_condition(ec, total_transferred))); while (tmp.begin() != tmp.end()) { std::size_t bytes_transferred = s.read_some(tmp, ec); tmp.consume(bytes_transferred); * total_transferred += bytes_transferred;* tmp.set_max_size(detail::adapt_completion_condition_result( completion_condition(ec, total_transferred))); } return total_transferred; }
Yes, my bad, sorry for noise. Actually, I've used streambuf to read HTTP response with content-length. But some data was already in buffer. I've changed my code to something like this: contentLength -= boost::asio::buffer_size(m_readBuffer.data()); boost::asio::async_read(m_socket, m_readBuffer, boost::asio::transfer_at_least(contentLength), myhandler); And now everything works fine. Thanks for help.
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