...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Returns the payload size of the body.
static std::uint64_t size( value_type);
When this body is used with http::message::prepare_payload
, the Content-Length
will be set to the payload size, and any chunked Transfer-Encoding will
be removed.