Change Address of net.Dial()

<p>Is there anyway to change the address of a net.Dial()? For example, I declared <em>conn, err := net.Dial(&#34;tcp&#34;, &#34;localhost:3000&#34;)</em>. Is there anyway to change <em>localhost:3000</em> to <em>localhost:8000</em>?</p> <hr/>**评论：**<br/><br/>glasswings: <pre><p>Change <code>&#34;localhost:3000&#34;</code> to <code>&#34;localhost:8000&#34;</code>, no?</p> <p>You can&#39;t change the port of an existing connection though.</p></pre>boomshroom: <pre><p>If you want to select the port based on an integer, you could use something like:</p> <pre><code>net.Dial(&#34;tcp&#34;, fmt.Sprintf(&#34;localhost:%d&#34;, port)) </code></pre> <p>To change the address is similar:</p> <pre><code>net.Dial(&#34;tcp&#34;, fmt.Sprintf(&#34;%d.%d.%d.%d:3000&#34;, addr&amp;0xFF, (addr&gt;&gt;8)&amp;0xFF, (addr&gt;&gt;16)&amp;0xFF, (addr&gt;&gt;24)&amp;0xFF)) </code></pre> <p>assuming the address is in little endian.</p></pre>