使用JMeter测试基于WebSocket协议的服务

:first-child{margin-top:0!important}img.plugin{box-shadow:0 1px 3px rgba(0,0,0,.1);border-radius:3px}iframe{border:0}figure{-webkit-margin-before:0;-webkit-margin-after:0;-webkit-margin-start:0;-webkit-margin-end:0}kbd{border:1px solid #aaa;-moz-border-radius:2px;-webkit-border-radius:2px;border-radius:2px;-moz-box-shadow:1px 2px 2px #ddd;-webkit-box-shadow:1px 2px 2px #ddd;box-shadow:1px 2px 2px #ddd;background-color:#f9f9f9;background-image:-moz-linear-gradient(top,#eee,#f9f9f9,#eee);background-image:-o-linear-gradient(top,#eee,#f9f9f9,#eee);background-image:-webkit-linear-gradient(top,#eee,#f9f9f9,#eee);background-image:linear-gradient(top,#eee,#f9f9f9,#eee);padding:1px 3px;font-family:inherit;font-size:.85em}.oembeded .oembed_photo{display:inline-block}img[data-echo]{margin:25px 0;width:100px;height:100px;background:url(../img/ajax.gif) center center no-repeat #fff}.spinner{display:inline-block;width:10px;height:10px;margin-bottom:-.1em;border:2px solid rgba(0,0,0,.5);border-top-color:transparent;border-radius:100%;-webkit-animation:spin 1s infinite linear;animation:spin 1s infinite linear}.spinner:after{content:'';display:block;width:0;height:0;position:absolute;top:-6px;left:0;border:4px solid transparent;border-bottom-color:rgba(0,0,0,.5);-webkit-transform:rotate(45deg);transform:rotate(45deg)}@-webkit-keyframes spin{to{-webkit-transform:rotate(360deg)}}@keyframes spin{to{transform:rotate(360deg)}}p.toc{margin:0!important}p.toc ul{padding-left:10px}p.toc>ul{padding:10px;margin:0 10px;display:inline-block;border:1px solid #ededed;border-radius:5px}p.toc li,p.toc ul{list-style-type:none}p.toc li{width:100%;padding:0;overflow:hidden}p.toc li a::after{content:"."}p.toc li a:before{content:"• "}p.toc h5{text-transform:uppercase}p.toc .title{float:left;padding-right:3px}p.toc .number{margin:0;float:right;padding-left:3px;background:#fff;display:none}input.task-list-item{margin-left:-1.62em}.markdown{font-family:"Hiragino Sans GB","Microsoft YaHei",STHeiti,SimSun,"Lucida Grande","Lucida Sans Unicode","Lucida Sans",'Segoe UI',AppleSDGothicNeo-Medium,'Malgun Gothic',Verdana,Tahoma,sans-serif;padding:20px}.markdown a{text-decoration:none;vertical-align:baseline}.markdown a:hover{text-decoration:underline}.markdown h1{font-size:2.2em;font-weight:700;margin:1.5em 0 1em}.markdown h2{font-size:1.8em;font-weight:700;margin:1.275em 0 .85em}.markdown h3{font-size:1.6em;font-weight:700;margin:1.125em 0 .75em}.markdown h4{font-size:1.4em;font-weight:700;margin:.99em 0 .66em}.markdown h5{font-size:1.2em;font-weight:700;margin:.855em 0 .57em}.markdown h6{font-size:1em;font-weight:700;margin:.75em 0 .5em}.markdown h1+p,.markdown h1:first-child,.markdown h2+p,.markdown h2:first-child,.markdown h3+p,.markdown h3:first-child,.markdown h4+p,.markdown h4:first-child,.markdown h5+p,.markdown h5:first-child,.markdown h6+p,.markdown h6:first-child{margin-top:0}.markdown hr{border:1px solid #ccc}.markdown p{margin:1em 0;word-wrap:break-word}.markdown ol{list-style-type:decimal}.markdown li{display:list-item;line-height:1.4em}.markdown blockquote{margin:1em 20px}.markdown blockquote>:first-child{margin-top:0}.markdown blockquote>:last-child{margin-bottom:0}.markdown blockquote cite:before{content:'\2014 \00A0'}.markdown .code{border-radius:3px;word-wrap:break-word}.markdown pre{border-radius:3px;word-wrap:break-word;border:1px solid #ccc;overflow:auto;padding:.5em}.markdown pre code{border:0;display:block}.markdown pre>code{font-family:Consolas,Inconsolata,Courier,monospace;font-weight:700;white-space:pre;margin:0}.markdown code{border-radius:3px;word-wrap:break-word;border:1px solid #ccc;padding:0 5px;margin:0 2px}.markdown img{max-width:100%}.markdown mark{color:#000;background-color:#fcf8e3}.markdown table{padding:0;border-collapse:collapse;border-spacing:0;margin-bottom:16px}.markdown table tr td,.markdown table tr th{border:1px solid #ccc;margin:0;padding:6px 13px}.markdown table tr th{font-weight:700}.markdown table tr th>:first-child{margin-top:0}.markdown table tr th>:last-child{margin-bottom:0}.markdown table tr td>:first-child{margin-top:0}.markdown table tr td>:last-child{margin-bottom:0}@import url(http://fonts.googleapis.com/css?family=Roboto+Condensed:300italic,400italic,700italic,400,300,700);.haroopad{padding:20px;color:#222;font-size:15px;font-family:"Roboto Condensed",Tauri,"Hiragino Sans GB","Microsoft YaHei",STHeiti,SimSun,"Lucida Grande","Lucida Sans Unicode","Lucida Sans",'Segoe UI',AppleSDGothicNeo-Medium,'Malgun Gothic',Verdana,Tahoma,sans-serif;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}.haroopad a{color:#3269a0}.haroopad a:hover{color:#4183c4}.haroopad h2{border-bottom:1px solid #e6e6e6}.haroopad h6{color:#777}.haroopad hr{border:1px solid #e6e6e6}.haroopad blockquote>code,.haroopad h1>code,.haroopad h2>code,.haroopad h3>code,.haroopad h4>code,.haroopad h5>code,.haroopad h6>code,.haroopad li>code,.haroopad p>code,.haroopad td>code{font-family:Consolas,"Liberation Mono",Menlo,Courier,monospace;font-size:85%;background-color:rgba(0,0,0,.02);padding:.2em .5em;border:1px solid #efefef}.haroopad pre>code{font-size:1em;letter-spacing:-1px;font-weight:700}.haroopad blockquote{border-left:4px solid #e6e6e6;padding:0 15px;color:#777}.haroopad table{background-color:#fafafa}.haroopad table tr td,.haroopad table tr th{border:1px solid #e6e6e6}.haroopad table tr:nth-child(2n){background-color:#f2f2f2}.hljs{display:block;overflow-x:auto;padding:.5em;background:#fdf6e3;color:#657b83;-webkit-text-size-adjust:none}.diff .hljs-header,.hljs-comment,.hljs-doctype,.hljs-javadoc,.hljs-pi,.lisp .hljs-string{color:#93a1a1}.css .hljs-tag,.hljs-addition,.hljs-keyword,.hljs-request,.hljs-status,.hljs-winutils,.method,.nginx .hljs-title{color:#859900}.hljs-command,.hljs-dartdoc,.hljs-hexcolor,.hljs-link_url,.hljs-number,.hljs-phpdoc,.hljs-regexp,.hljs-rules .hljs-value,.hljs-string,.hljs-tag .hljs-value,.tex .hljs-formula{color:#2aa198}.css .hljs-function,.hljs-built_in,.hljs-chunk,.hljs-decorator,.hljs-id,.hljs-identifier,.hljs-localvars,.hljs-title,.vhdl .hljs-literal{color:#268bd2}.hljs-attribute,.hljs-class .hljs-title,.hljs-constant,.hljs-link_reference,.hljs-parent,.hljs-type,.hljs-variable,.lisp .hljs-body,.smalltalk .hljs-number{color:#b58900}.css .hljs-pseudo,.diff .hljs-change,.hljs-attr_selector,.hljs-cdata,.hljs-header,.hljs-pragma,.hljs-preprocessor,.hljs-preprocessor .hljs-keyword,.hljs-shebang,.hljs-special,.hljs-subst,.hljs-symbol,.hljs-symbol .hljs-string{color:#cb4b16}.hljs-deletion,.hljs-important{color:#dc322f}.hljs-link_label{color:#6c71c4}.tex .hljs-formula{background:#eee8d5}.MathJax_Hover_Frame{border-radius:.25em;-webkit-border-radius:.25em;-moz-border-radius:.25em;-khtml-border-radius:.25em;box-shadow:0 0 15px #83A;-webkit-box-shadow:0 0 15px #83A;-moz-box-shadow:0 0 15px #83A;-khtml-box-shadow:0 0 15px #83A;border:1px solid #A6D!important;display:inline-block;position:absolute}.MathJax_Hover_Arrow{position:absolute;width:15px;height:11px;cursor:pointer}#MathJax_About{position:fixed;left:50%;width:auto;text-align:center;border:3px outset;padding:1em 2em;background-color:#DDD;color:#000;cursor:default;font-family:message-box;font-size:120%;font-style:normal;text-indent:0;text-transform:none;line-height:normal;letter-spacing:normal;word-spacing:normal;word-wrap:normal;white-space:nowrap;float:none;z-index:201;border-radius:15px;-webkit-border-radius:15px;-moz-border-radius:15px;-khtml-border-radius:15px;box-shadow:0 10px 20px gray;-webkit-box-shadow:0 10px 20px gray;-moz-box-shadow:0 10px 20px gray;-khtml-box-shadow:0 10px 20px gray;filter:progid:DXImageTransform.Microsoft.dropshadow(OffX=2, OffY=2, Color='gray', Positive='true')}.MathJax_Menu{position:absolute;background-color:#fff;color:#000;width:auto;padding:5px 0;border:1px solid #CCC;margin:0;cursor:default;font:menu;text-align:left;text-indent:0;text-transform:none;line-height:normal;letter-spacing:normal;word-spacing:normal;word-wrap:normal;white-space:nowrap;float:none;z-index:201;border-radius:5px;-webkit-border-radius:5px;-moz-border-radius:5px;-khtml-border-radius:5px;box-shadow:0 10px 20px gray;-webkit-box-shadow:0 10px 20px gray;-moz-box-shadow:0 10px 20px gray;-khtml-box-shadow:0 10px 20px gray;filter:progid:DXImageTransform.Microsoft.dropshadow(OffX=2, OffY=2, Color='gray', Positive='true')}.MathJax_MenuItem{padding:1px 2em;background:0 0}.MathJax_MenuArrow{position:absolute;right:.5em;color:#666}.MathJax_MenuActive .MathJax_MenuArrow{color:#fff}.MathJax_MenuArrow.RTL{left:.5em;right:auto}.MathJax_MenuCheck{position:absolute;left:.7em}.MathJax_MenuCheck.RTL{right:.7em;left:auto}.MathJax_MenuRadioCheck{position:absolute;left:.7em}.MathJax_MenuRadioCheck.RTL{right:.7em;left:auto}.MathJax_MenuLabel{padding:1px 2em 3px 1.33em;font-style:italic}.MathJax_MenuRule{border-top:1px solid #DDD;margin:4px 3px}.MathJax_MenuDisabled{color:GrayText}.MathJax_MenuActive{background-color:#606872;color:#fff}.MathJax_Menu_Close{position:absolute;width:31px;height:31px;top:-15px;left:-15px}#MathJax_Zoom{position:absolute;background-color:#F0F0F0;overflow:auto;display:block;z-index:301;padding:.5em;border:1px solid #000;margin:0;font-weight:400;font-style:normal;text-align:left;text-indent:0;text-transform:none;line-height:normal;letter-spacing:normal;word-spacing:normal;word-wrap:normal;white-space:nowrap;float:none;box-shadow:5px 5px 15px #AAA;-webkit-box-shadow:5px 5px 15px #AAA;-moz-box-shadow:5px 5px 15px #AAA;-khtml-box-shadow:5px 5px 15px #AAA;filter:progid:DXImageTransform.Microsoft.dropshadow(OffX=2, OffY=2, Color='gray', Positive='true')}#MathJax_ZoomOverlay{position:absolute;left:0;top:0;z-index:300;display:inline-block;width:100%;height:100%;border:0;padding:0;margin:0;background-color:#fff;opacity:0;filter:alpha(opacity=0)}#MathJax_ZoomFrame{position:relative;display:inline-block;height:0;width:0}#MathJax_ZoomEventTrap{position:absolute;left:0;top:0;z-index:302;display:inline-block;border:0;padding:0;margin:0;background-color:#fff;opacity:0;filter:alpha(opacity=0)}.MathJax_Preview{color:#888}#MathJax_Message{position:fixed;left:1px;bottom:2px;background-color:#E6E6E6;border:1px solid #959595;margin:0;padding:2px 8px;z-index:102;color:#000;font-size:80%;width:auto;white-space:nowrap}#MathJax_MSIE_Frame{position:absolute;top:0;left:0;width:0;z-index:101;border:0;margin:0;padding:0}.MathJax_Error{color:#C00;font-style:italic}footer{position:fixed;font-size:.8em;text-align:right;bottom:0;margin-left:-25px;height:20px;width:100%}
-->

由于JMeter没有针对WebSocket的sampler，所以就需要安装开源的插件，以使其支持WebSocket协议。

安装JMeter WebSocketSampler

首先，从github上clone源码下来，地址如下： https://github.com/maciejzaleski/JMeter-WebSocketSampler
之后，使用Maven构建此代码后，将jar包“JMeterWebSocketSampler-1.0.2-SNAPSHOT.jar”放到JMeter的“lib/ext/”目录中，此目录是JMeter用来放置扩展包的地方。
最后，将websocket sampler依赖的其他jar包放到“lib”目录下，此目录是JMeter用来放插件所依赖的jar包的地方。websocket sampler所依赖的jar包如下：
- jetty-http-9.1.1.v20140108.jar
- jetty-io-9.1.1.v20140108.jar
- jetty-util-9.1.1.v20140108.jar
- websocket-api-9.1.1.v20140108.jar
- websocket-client-9.1.1.v20140108.jar
- websocket-common-9.1.1.v20140108.jar
打开JMeter，通过”Add” -> “Sampler” -> “WebSocket Sampler”，添加一个取样器：

创建一个简单的websocket实现：

通过下面blog所说的步骤，构建一个基于websocket协议的聊天室：
http://waylau.com/netty-websocket-chat/
启动后如图：

使用JMeter测试websocket聊天室

配置WebSocket Sampler如下图：
运行后，查看JMeter显示结果：
查看聊天室，发现确实收到的此条消息：