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basic_socket::available (2 of 2 overloads)

Determine the number of bytes available for reading.

std::size_t available(
    boost::system::error_code & ec) const;

This function is used to determine the number of bytes that may be read without blocking.



Set to indicate what error occurred, if any.

Return Value

The number of bytes that may be read without blocking, or 0 if an error occurs.