How to receive 100-continue with async API

[xiaoma565]

I readed example https://www.boost.org/doc/libs/1_85_0/libs/beast/doc/html/beast/more_examples/expect_100_continue_server.html with how to receive 100-continue message.
But my code was call by async API.
My code is here

void ClientConnection::DoReadHeader()
{
    auto self(shared_from_this());
    p_.emplace();
    p_->body_limit(boost::none);
    if (timeout_ > 0) {
        stream_.expires_after(std::chrono::seconds(timeout_));
    } else {
        stream_.expires_at(boost::asio::steady_timer::time_point::max());
    }
    boost::beast::http::async_read_header(stream_, buffer_, *p_,
        boost::beast::bind_front_handler(&ClientConnection::OnReadHeader, self));
}

void ClientConnection::OnReadHeader(boost::beast::error_code ec, std::size_t bytes)
{
    boost::ignore_unused(bytes);
    auto self(shared_from_this());
    if (ec) {
        if (ec != boost::beast::http::error::end_of_stream) {
            LOG_E("[ClientConnection] OnReadHeader error : %s", ec.what().c_str());
        }
        auto fun = clientHandler_.GetFun(ClientHandlerType::HEADER_RES_ERROR);
        if (fun != nullptr) {
            fun(self);
        }
        return DoClose();
    }
    auto fun = clientHandler_.GetFun(ClientHandlerType::HEADER_RES);
    if (fun != nullptr) {
        fun(self);
    }
    if (p_->chunked()) {
        p_->on_chunk_header(headerCb);
        p_->on_chunk_body(bodyCb);
        if (!p_->is_done()) {
            if (timeout_ > 0) {
                stream_.expires_after(std::chrono::seconds(timeout_));
            } else {
                stream_.expires_at(boost::asio::steady_timer::time_point::max());
            }
            boost::beast::http::async_read(stream_, buffer_, *p_,
                boost::beast::bind_front_handler(&ClientConnection::OnChunkBody, self));
        }
    } else {
        if (!p_->is_done()) {
            if (timeout_ > 0) {
                stream_.expires_after(std::chrono::seconds(timeout_));
            } else {
                stream_.expires_at(boost::asio::steady_timer::time_point::max());
            }
            boost::beast::http::async_read(stream_, buffer_, *p_,
                boost::beast::bind_front_handler(&ClientConnection::OnReadBody, self));
        }
    }
}

ClientConnection.zip

[ashtum]

The provided code is incomplete and cannot be compiled or tested. Could you provide more details on the issue?