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<h1>WebSocket</h1>
<p>cpp-httplib supports WebSocket as well. Unlike HTTP request/response, WebSocket lets the server and client exchange messages in both directions. It's great for chat apps and real-time notifications.</p>
<p>Let's build an echo server and client right away.</p>
<h2>Echo Server</h2>
<p>Here's an echo server that sends back whatever message it receives.</p>
<div class="code-dark"><pre style="background-color:#2d2d2d;">
<span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;">&quot;</span><span style="color:#99cc99;">httplib.h</span><span style="color:#d3d0c8;">&quot;
</span><span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;">&lt;</span><span style="color:#99cc99;">iostream</span><span style="color:#d3d0c8;">&gt;
</span><span style="color:#d3d0c8;">
</span><span style="color:#cc99cc;">int </span><span style="color:#6699cc;">main</span><span style="color:#d3d0c8;">() {
</span><span style="color:#d3d0c8;"> httplib::Server svr;
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;"> svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">&quot;, [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &amp;, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#d3d0c8;"> std::string msg;
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">(ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg); </span><span style="color:#747369;">// Send back the received message as-is
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;"> });
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;"> std::cout &lt;&lt; &quot;</span><span style="color:#99cc99;">Listening on port 8080...</span><span style="color:#d3d0c8;">&quot; &lt;&lt; std::endl;
</span><span style="color:#d3d0c8;"> svr.</span><span style="color:#6699cc;">listen</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">0.0.0.0</span><span style="color:#d3d0c8;">&quot;, </span><span style="color:#f99157;">8080</span><span style="color:#d3d0c8;">);
</span><span style="color:#d3d0c8;">}
</span></pre>
</div><div class="code-light"><pre style="background-color:#eff1f5;">
<span style="color:#b48ead;">#include </span><span style="color:#4f5b66;">&quot;</span><span style="color:#a3be8c;">httplib.h</span><span style="color:#4f5b66;">&quot;
</span><span style="color:#b48ead;">#include </span><span style="color:#4f5b66;">&lt;</span><span style="color:#a3be8c;">iostream</span><span style="color:#4f5b66;">&gt;
</span><span style="color:#4f5b66;">
</span><span style="color:#b48ead;">int </span><span style="color:#8fa1b3;">main</span><span style="color:#4f5b66;">() {
</span><span style="color:#4f5b66;"> httplib::Server svr;
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;"> svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">&quot;, [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &amp;, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#4f5b66;"> std::string msg;
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">(ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg); </span><span style="color:#a7adba;">// Send back the received message as-is
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;"> });
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;"> std::cout &lt;&lt; &quot;</span><span style="color:#a3be8c;">Listening on port 8080...</span><span style="color:#4f5b66;">&quot; &lt;&lt; std::endl;
</span><span style="color:#4f5b66;"> svr.</span><span style="color:#8fa1b3;">listen</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">0.0.0.0</span><span style="color:#4f5b66;">&quot;, </span><span style="color:#d08770;">8080</span><span style="color:#4f5b66;">);
</span><span style="color:#4f5b66;">}
</span></pre>
</div>
<p>You register a WebSocket handler with <code>svr.WebSocket()</code>. It works just like <code>svr.Get()</code> and <code>svr.Post()</code> from Chapter 3.</p>
<p>Inside the handler, <code>ws.read(msg)</code> waits for a message. When the connection closes, <code>read()</code> returns <code>false</code>, so the loop exits. <code>ws.send(msg)</code> sends a message back.</p>
<h2>Connecting from a Client</h2>
<p>Let's connect to the server using <code>httplib::ws::WebSocketClient</code>.</p>
<div class="code-dark"><pre style="background-color:#2d2d2d;">
<span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;">&quot;</span><span style="color:#99cc99;">httplib.h</span><span style="color:#d3d0c8;">&quot;
</span><span style="color:#cc99cc;">#include </span><span style="color:#d3d0c8;">&lt;</span><span style="color:#99cc99;">iostream</span><span style="color:#d3d0c8;">&gt;
</span><span style="color:#d3d0c8;">
</span><span style="color:#cc99cc;">int </span><span style="color:#6699cc;">main</span><span style="color:#d3d0c8;">() {
</span><span style="color:#d3d0c8;"> httplib::ws::WebSocketClient </span><span style="color:#6699cc;">client</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">ws://localhost:8080/ws</span><span style="color:#d3d0c8;">&quot;);
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(!client.</span><span style="color:#6699cc;">connect</span><span style="color:#d3d0c8;">()) {
</span><span style="color:#d3d0c8;"> std::cout &lt;&lt; &quot;</span><span style="color:#99cc99;">Connection failed</span><span style="color:#d3d0c8;">&quot; &lt;&lt; std::endl;
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">return </span><span style="color:#f99157;">1</span><span style="color:#d3d0c8;">;
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;"> </span><span style="color:#747369;">// Send a message
</span><span style="color:#d3d0c8;"> client.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">Hello, WebSocket!</span><span style="color:#d3d0c8;">&quot;);
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;"> </span><span style="color:#747369;">// Receive a response from the server
</span><span style="color:#d3d0c8;"> std::string msg;
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(client.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
</span><span style="color:#d3d0c8;"> std::cout &lt;&lt; msg &lt;&lt; std::endl; </span><span style="color:#747369;">// Hello, WebSocket!
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;"> client.</span><span style="color:#6699cc;">close</span><span style="color:#d3d0c8;">();
</span><span style="color:#d3d0c8;">}
</span></pre>
</div><div class="code-light"><pre style="background-color:#eff1f5;">
<span style="color:#b48ead;">#include </span><span style="color:#4f5b66;">&quot;</span><span style="color:#a3be8c;">httplib.h</span><span style="color:#4f5b66;">&quot;
</span><span style="color:#b48ead;">#include </span><span style="color:#4f5b66;">&lt;</span><span style="color:#a3be8c;">iostream</span><span style="color:#4f5b66;">&gt;
</span><span style="color:#4f5b66;">
</span><span style="color:#b48ead;">int </span><span style="color:#8fa1b3;">main</span><span style="color:#4f5b66;">() {
</span><span style="color:#4f5b66;"> httplib::ws::WebSocketClient </span><span style="color:#8fa1b3;">client</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">ws://localhost:8080/ws</span><span style="color:#4f5b66;">&quot;);
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(!client.</span><span style="color:#8fa1b3;">connect</span><span style="color:#4f5b66;">()) {
</span><span style="color:#4f5b66;"> std::cout &lt;&lt; &quot;</span><span style="color:#a3be8c;">Connection failed</span><span style="color:#4f5b66;">&quot; &lt;&lt; std::endl;
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">return </span><span style="color:#d08770;">1</span><span style="color:#4f5b66;">;
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;"> </span><span style="color:#a7adba;">// Send a message
</span><span style="color:#4f5b66;"> client.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">Hello, WebSocket!</span><span style="color:#4f5b66;">&quot;);
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;"> </span><span style="color:#a7adba;">// Receive a response from the server
</span><span style="color:#4f5b66;"> std::string msg;
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(client.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
</span><span style="color:#4f5b66;"> std::cout &lt;&lt; msg &lt;&lt; std::endl; </span><span style="color:#a7adba;">// Hello, WebSocket!
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;"> client.</span><span style="color:#8fa1b3;">close</span><span style="color:#4f5b66;">();
</span><span style="color:#4f5b66;">}
</span></pre>
</div>
<p>Pass a URL in <code>ws://host:port/path</code> format to the constructor. Call <code>connect()</code> to start the connection, then use <code>send()</code> and <code>read()</code> to exchange messages.</p>
<h2>Text and Binary</h2>
<p>WebSocket has two types of messages: text and binary. You can tell them apart by the return value of <code>read()</code>.</p>
<div class="code-dark"><pre style="background-color:#2d2d2d;">
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">&quot;, [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &amp;, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#d3d0c8;"> std::string msg;
</span><span style="color:#d3d0c8;"> httplib::ws::ReadResult ret;
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">((ret = ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg))) {
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(ret == httplib::ws::Binary) {
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg.</span><span style="color:#6699cc;">data</span><span style="color:#d3d0c8;">(), msg.</span><span style="color:#6699cc;">size</span><span style="color:#d3d0c8;">()); </span><span style="color:#747369;">// Send as binary
</span><span style="color:#d3d0c8;"> } </span><span style="color:#cc99cc;">else </span><span style="color:#d3d0c8;">{
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg); </span><span style="color:#747369;">// Send as text
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;">});
</span></pre>
</div><div class="code-light"><pre style="background-color:#eff1f5;">
<span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">&quot;, [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &amp;, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#4f5b66;"> std::string msg;
</span><span style="color:#4f5b66;"> httplib::ws::ReadResult ret;
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">((ret = ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg))) {
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(ret == httplib::ws::Binary) {
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg.</span><span style="color:#8fa1b3;">data</span><span style="color:#4f5b66;">(), msg.</span><span style="color:#8fa1b3;">size</span><span style="color:#4f5b66;">()); </span><span style="color:#a7adba;">// Send as binary
</span><span style="color:#4f5b66;"> } </span><span style="color:#b48ead;">else </span><span style="color:#4f5b66;">{
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg); </span><span style="color:#a7adba;">// Send as text
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;">});
</span></pre>
</div>
<ul>
<li><code>ws.send(const std::string &amp;)</code> — sends as a text message</li>
<li><code>ws.send(const char *, size_t)</code> — sends as a binary message</li>
</ul>
<p>The client-side API is the same.</p>
<h2>Accessing Request Information</h2>
<p>You can read HTTP request information from the handshake through the first argument <code>req</code> in the handler. This is handy for checking authentication tokens.</p>
<div class="code-dark"><pre style="background-color:#2d2d2d;">
<span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">&quot;, [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &amp;req, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">auto</span><span style="color:#d3d0c8;"> token = req.</span><span style="color:#6699cc;">get_header_value</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">Authorization</span><span style="color:#d3d0c8;">&quot;);
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">if </span><span style="color:#d3d0c8;">(token.</span><span style="color:#6699cc;">empty</span><span style="color:#d3d0c8;">()) {
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">close</span><span style="color:#d3d0c8;">(httplib::ws::CloseStatus::PolicyViolation, &quot;</span><span style="color:#99cc99;">unauthorized</span><span style="color:#d3d0c8;">&quot;);
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">return</span><span style="color:#d3d0c8;">;
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;"> std::string msg;
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">(ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg);
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;">});
</span></pre>
</div><div class="code-light"><pre style="background-color:#eff1f5;">
<span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">&quot;, [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &amp;req, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">auto</span><span style="color:#4f5b66;"> token = req.</span><span style="color:#8fa1b3;">get_header_value</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">Authorization</span><span style="color:#4f5b66;">&quot;);
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">if </span><span style="color:#4f5b66;">(token.</span><span style="color:#8fa1b3;">empty</span><span style="color:#4f5b66;">()) {
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">close</span><span style="color:#4f5b66;">(httplib::ws::CloseStatus::PolicyViolation, &quot;</span><span style="color:#a3be8c;">unauthorized</span><span style="color:#4f5b66;">&quot;);
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">return</span><span style="color:#4f5b66;">;
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;"> std::string msg;
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">(ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg);
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;">});
</span></pre>
</div>
<h2>Using WSS</h2>
<p>WebSocket over HTTPS (WSS) is also supported. On the server side, just register a WebSocket handler on <code>httplib::SSLServer</code>.</p>
<div class="code-dark"><pre style="background-color:#2d2d2d;">
<span style="color:#d3d0c8;">httplib::SSLServer </span><span style="color:#6699cc;">svr</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">cert.pem</span><span style="color:#d3d0c8;">&quot;, &quot;</span><span style="color:#99cc99;">key.pem</span><span style="color:#d3d0c8;">&quot;);
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">WebSocket</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">/ws</span><span style="color:#d3d0c8;">&quot;, [](</span><span style="color:#cc99cc;">const</span><span style="color:#d3d0c8;"> httplib::Request &amp;, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#d3d0c8;"> std::string msg;
</span><span style="color:#d3d0c8;"> </span><span style="color:#cc99cc;">while </span><span style="color:#d3d0c8;">(ws.</span><span style="color:#6699cc;">read</span><span style="color:#d3d0c8;">(msg)) {
</span><span style="color:#d3d0c8;"> ws.</span><span style="color:#6699cc;">send</span><span style="color:#d3d0c8;">(msg);
</span><span style="color:#d3d0c8;"> }
</span><span style="color:#d3d0c8;">});
</span><span style="color:#d3d0c8;">
</span><span style="color:#d3d0c8;">svr.</span><span style="color:#6699cc;">listen</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">0.0.0.0</span><span style="color:#d3d0c8;">&quot;, </span><span style="color:#f99157;">8443</span><span style="color:#d3d0c8;">);
</span></pre>
</div><div class="code-light"><pre style="background-color:#eff1f5;">
<span style="color:#4f5b66;">httplib::SSLServer </span><span style="color:#8fa1b3;">svr</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">cert.pem</span><span style="color:#4f5b66;">&quot;, &quot;</span><span style="color:#a3be8c;">key.pem</span><span style="color:#4f5b66;">&quot;);
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">WebSocket</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">/ws</span><span style="color:#4f5b66;">&quot;, [](</span><span style="color:#b48ead;">const</span><span style="color:#4f5b66;"> httplib::Request &amp;, httplib::ws::WebSocket &amp;ws) {
</span><span style="color:#4f5b66;"> std::string msg;
</span><span style="color:#4f5b66;"> </span><span style="color:#b48ead;">while </span><span style="color:#4f5b66;">(ws.</span><span style="color:#8fa1b3;">read</span><span style="color:#4f5b66;">(msg)) {
</span><span style="color:#4f5b66;"> ws.</span><span style="color:#8fa1b3;">send</span><span style="color:#4f5b66;">(msg);
</span><span style="color:#4f5b66;"> }
</span><span style="color:#4f5b66;">});
</span><span style="color:#4f5b66;">
</span><span style="color:#4f5b66;">svr.</span><span style="color:#8fa1b3;">listen</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">0.0.0.0</span><span style="color:#4f5b66;">&quot;, </span><span style="color:#d08770;">8443</span><span style="color:#4f5b66;">);
</span></pre>
</div>
<p>On the client side, use the <code>wss://</code> scheme.</p>
<div class="code-dark"><pre style="background-color:#2d2d2d;">
<span style="color:#d3d0c8;">httplib::ws::WebSocketClient </span><span style="color:#6699cc;">client</span><span style="color:#d3d0c8;">(&quot;</span><span style="color:#99cc99;">wss://localhost:8443/ws</span><span style="color:#d3d0c8;">&quot;);
</span></pre>
</div><div class="code-light"><pre style="background-color:#eff1f5;">
<span style="color:#4f5b66;">httplib::ws::WebSocketClient </span><span style="color:#8fa1b3;">client</span><span style="color:#4f5b66;">(&quot;</span><span style="color:#a3be8c;">wss://localhost:8443/ws</span><span style="color:#4f5b66;">&quot;);
</span></pre>
</div>
<h2>Next Steps</h2>
<p>Now you know the basics of WebSocket. This wraps up the Tour.</p>
<p>The next page gives you a summary of features we didn't cover in the Tour.</p>
<p><strong>Next:</strong> <a href="../09-whats-next">What's Next</a></p>
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