flex rtmp wowza不能发布视频

Question

请教个问题。我用flex + rtmp + wowza想实现视频的推送和接收。我使用如下的代码推送视频，但是在wowza服务器上却直接停止了我的推送操作，请问这是什么原因呢？

 <?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
    <fx:Declarations>
        <!-- 将非可视元素（例如服务、值对象）放在此处 -->
    </fx:Declarations>

    <fx:Script>
        <![CDATA[

            private var connection:NetConnection; 
            private var stream:NetStream; 
            private var m_camera:Camera;


            public function VideoExample():void 
            { 
                connection = new NetConnection(); 
                connection.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
                connection.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
                connection.connect(txtURL.text);
            } 

            private function netStatusHandler(event:NetStatusEvent):void { 
                switch (event.info.code)
                {
                    case "NetConnection.Connect.Success":
                        trace("成功连接FMS服务器！");
                        publishStreamVideo(); // 接收视频
                        break;
                    case "NetConnection.Connect.Rejected":
                        trace ("访问FMS服务器权限不足,连接被拒绝！");
                        break;
                    case "NetConnection.Connect.InvalidApp":
                        trace("指定的应用程序名称没有找到");
                        break;
                    case "NetConnection.Connect.Failed":
                        trace("连接失败！");
                        break;
                    case "NetConnection.Connect.AppShutDown":
                        trace("服务器端应用程序已经关闭(由于资源耗用过大等原因)或者服务器已经关闭！");
                        break;
                    case "NetConnection.Connect.Closed":
                        trace("与FMS的连接中断！");
                        break;
                }
            } 

            // 发布视频
            private function publishStreamVideo():void 
            { 
                var stream:NetStream = new NetStream(connection); 

                var microPhone:Microphone = Microphone.getMicrophone();

                stream.attachAudio(microPhone);
                stream.attachCamera(m_camera);
                stream.client = this;
                stream.publish(txtID.text);
            } 

            private function securityErrorHandler(event:SecurityErrorEvent):void 
            {
                trace("securityErrorHandler: " + event); 
            } 

            private function asyncErrorHandler(event:AsyncErrorEvent):void 
            { 
                trace("securityErrorHandler: " + event); 
            } 

            // 推送视频
            protected function button1_clickHandler(event:MouseEvent):void
            {
                VideoExample();
            }

            // 连接摄像头
            protected function btnOpenCamera_clickHandler(event:MouseEvent):void
            {
                m_camera = Camera.getCamera();

                var m_video:Video = new Video(m_camera.width * 2, m_camera.height * 2);
                m_video.attachCamera(m_camera);
                sprct.addChild(m_video);
            }

        ]]>
    </fx:Script>

    <s:TextInput id="txtURL" x="78" y="49" width="244" text="rtmp://localhost/videochat"/>
    <s:TextInput id="txtID" x="78" y="79" width="244" text="testing"/>
    <s:Button x="351" y="76" label="推送视频" click="button1_clickHandler(event)" />
    <s:VideoDisplay id="sprct" x="79" y="101" width="351" height="238"/>
    <s:Button id="btnOpenCamera" x="351" y="48" label="打开摄像头" click="btnOpenCamera_clickHandler(event)"/>
</s:Application>