an>.<span class="ident">parse</span>().<span class="ident">unwrap</span>();

<span class="kw">let</span> <span class="ident">connect_future</span> <span class="op">=</span> <span class="ident">TcpStream</span>::<span class="ident">connect</span>(<span class="kw-2">&amp;</span><span class="ident">addr</span>);

<span class="kw">let</span> <span class="ident">task</span> <span class="op">=</span> <span class="ident">connect_future</span>
    .<span class="ident">and_then</span>(<span class="op">|</span><span 