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<?xml version="1.0" encoding="UTF-8"?>
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  <title>sslechoclient.html Example File | Qt WebSockets 5.7</title>
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<td >Qt 5.7</td><td ><a href="qtwebsockets-index.html">Qt WebSockets</a></td><td ><a href="qtwebsockets-sslechoserver-example.html">SSL Echo Server Example</a></td><td >sslechoclient.html Example File</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">sslechoclient.html Example File</h1>
<span class="subtitle">sslechoserver/sslechoclient.html</span>
<!-- $$$sslechoserver/sslechoclient.html-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  &lt;!DOCTYPE html&gt;
  &lt;html&gt;
      &lt;head&gt;
          &lt;title&gt;WebSocket Echo Client&lt;/title&gt;
          &lt;meta charset=&quot;utf-8&quot;&gt;
      &lt;/head&gt;
      &lt;body&gt;
          &lt;h1&gt;WebSocket Echo Client&lt;/h1&gt;
          &lt;p&gt;
              &lt;button onClick=&quot;initWebSocket();&quot;&gt;Connect&lt;/button&gt;
              &lt;button onClick=&quot;stopWebSocket();&quot;&gt;Disconnect&lt;/button&gt;
              &lt;button onClick=&quot;checkSocket();&quot;&gt;State&lt;/button&gt;
          &lt;/p&gt;
          &lt;p&gt;
              &lt;textarea id=&quot;debugTextArea&quot; style=&quot;width:400px;height:200px;&quot;&gt;&lt;/textarea&gt;
          &lt;/p&gt;
          &lt;p&gt;
              &lt;input type=&quot;text&quot; id=&quot;inputText&quot; onkeydown=&quot;if(event.keyCode==13)sendMessage();&quot;/&gt;
              &lt;button onClick=&quot;sendMessage();&quot;&gt;Send&lt;/button&gt;
          &lt;/p&gt;

          &lt;script type=&quot;text/javascript&quot;&gt;
              var debugTextArea = document.getElementById(&quot;debugTextArea&quot;);
              var wsUri = &quot;wss://localhost:1234&quot;;
              var websocket = null;

              function debug(message) {
                  debugTextArea.value += message + &quot;\n&quot;;
                  debugTextArea.scrollTop = debugTextArea.scrollHeight;
              }

              function sendMessage() {
                  var msg = document.getElementById(&quot;inputText&quot;).value;
                  if ( websocket != null )
                  {
                      document.getElementById(&quot;inputText&quot;).value = &quot;&quot;;
                      websocket.send( msg );
                      console.log( &quot;string sent :&quot;, '&quot;'+msg+'&quot;' );
                  }
              }

              function initWebSocket() {
                  try {
                      if (typeof MozWebSocket == 'function')
                          WebSocket = MozWebSocket;
                      if ( websocket &amp;&amp; websocket.readyState == 1 )
                          websocket.close();
                      websocket = new WebSocket( wsUri );
                      websocket.onopen = function (evt) {
                          debug(&quot;CONNECTED&quot;);
                      };
                      websocket.onclose = function (evt) {
                          debug(&quot;DISCONNECTED&quot;);
                      };
                      websocket.onmessage = function (evt) {
                          console.log( &quot;Message received :&quot;, evt.data );
                          debug( evt.data );
                      };
                      websocket.onerror = function (evt) {
                          debug('ERROR: ' + evt.data);
                      };
                  } catch (exception) {
                      debug('ERROR: ' + exception);
                  }
              }

              function stopWebSocket() {
                  if (websocket)
                      websocket.close();
              }

              function checkSocket() {
                  if (websocket != null) {
                      var stateStr;
                      switch (websocket.readyState) {
                          case 0: {
                              stateStr = &quot;CONNECTING&quot;;
                              break;
                          }
                          case 1: {
                              stateStr = &quot;OPEN&quot;;
                              break;
                          }
                          case 2: {
                              stateStr = &quot;CLOSING&quot;;
                              break;
                          }
                          case 3: {
                              stateStr = &quot;CLOSED&quot;;
                              break;
                          }
                          default: {
                              stateStr = &quot;UNKNOW&quot;;
                              break;
                          }
                      }
                      debug(&quot;WebSocket state = &quot; + websocket.readyState + &quot; ( &quot; + stateStr + &quot; )&quot;);
                  } else {
                      debug(&quot;WebSocket is null&quot;);
                  }
              }
          &lt;/script&gt;
      &lt;/body&gt;
  &lt;/html&gt;

</pre>
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