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Attempt to read a certain amount of data from a stream before returning.
template<
typename SyncReadStream,
typename Allocator>
std::size_t read(
SyncReadStream & s,
basic_streambuf< Allocator > & b,
boost::system::error_code & ec);
This function is used to read a certain number of bytes of data from a stream. The call will block until one of the following conditions is true:
This operation is implemented in terms of zero or more calls to the stream's read_some function.
The stream from which the data is to be read. The type must support the SyncReadStream concept.
The basic_streambuf
object into which the data will be read.
Set to indicate what error occurred, if any.
The number of bytes transferred.
This overload is equivalent to calling:
boost::asio::read(
s, b,
boost::asio::transfer_all(), ec);