How to add some custom key to the http headers

[sorrylala]

I want to add some custom keys to the http headers of ws，I use websocketpp client，how can I do this, thank you!

[hzqst]

Just for reference.

				websocketpp::lib::error_code ec;

				auto conn = m_WebSocketClientPtr->get_connection(m_WebSocketConnectLocation, ec);

				if (!m_ClientId.empty())
				{
					conn->replace_header("ClientId", m_ClientId);
				}