+<h3 id="HttpMessage_guessContentType">string HttpMessage::guessContentType(string magic_file[, int magic_mode = MAGIC_MIME])</h3>
+<p>Attempts to guess the content type of supplied payload through libmagic.</p>
+<p>Expects a string parameter specifying the magic.mime database to use.<br />
+Additionally accepts an optional int parameter, being flags for libmagic.</p>
+<p>Returns the guessed content type on success, or FALSE on failure.</p>
+<p>Throws HttpRuntimeException, HttpInvalidParamException <br />
+if http.only_exceptions is TRUE.</p>