e&#39;s <code>struct mg_http_message</code>, containing parsed information about an HTTP request or response.</p><p><strong>Fields</strong></p><ul><li><code>method::MgStr</code>: The HTTP method (e.g., &quot;GET&quot;, &quot;POST&quot;).</li><li><code>uri::MgStr</code>: The request URI (e.g., &quot;/api/data&quot;).</li><li><code>query::MgStr</code>: The query string part of the URI (e.g., &quot;id=123&quot;).</li><li><code>proto::MgStr</code>: The protocol string (e.g., &quot;HTTP/1.1&quot;).</li><li><code