e</span></span>), </span> <span class="parameter" id="connect-param-supportedProtocols"><span class="type-annotation"><a href="dart-core/List-class.html">List</a><span class="signature">&lt;<a href="dart-core/String-class.html">String</a>&gt;</span></span> <span class="parameter-name">supportedProtocols</span>, </span> <span class="parameter" id="connect-param-timeout"><span class="type-annotation"><a href="dart-core/Duration-class.html">Duration</a></span> <span class="parameter-name">timeout</span></span>