package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.notify.cmd; 
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import com.genersoft.iot.vmp.gb28181.bean.Device; 
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import com.genersoft.iot.vmp.gb28181.bean.ParentPlatform; 
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import com.genersoft.iot.vmp.gb28181.event.EventPublisher; 
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import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent; 
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import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.IMessageHandler; 
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import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.notify.NotifyMessageHandler; 
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import com.genersoft.iot.vmp.service.IDeviceService; 
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import com.genersoft.iot.vmp.storager.IRedisCatchStorage; 
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import com.genersoft.iot.vmp.storager.IVideoManagerStorage; 
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import com.genersoft.iot.vmp.utils.DateUtil; 
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import gov.nist.javax.sip.message.SIPRequest; 
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import org.dom4j.Element; 
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import org.slf4j.Logger; 
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import org.slf4j.LoggerFactory; 
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import org.springframework.beans.factory.InitializingBean; 
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import org.springframework.beans.factory.annotation.Autowired; 
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import org.springframework.stereotype.Component; 
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import org.springframework.util.ObjectUtils; 
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import org.springframework.util.StringUtils; 
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import javax.sip.InvalidArgumentException; 
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import javax.sip.RequestEvent; 
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import javax.sip.SipException; 
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import javax.sip.header.ViaHeader; 
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import javax.sip.message.Response; 
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import java.text.ParseException; 
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/** 
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 * 状态信息(心跳)报送 
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 */ 
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@Component 
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public class KeepaliveNotifyMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler { 
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    private Logger logger = LoggerFactory.getLogger(KeepaliveNotifyMessageHandler.class); 
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    private final static String cmdType = "Keepalive"; 
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    @Autowired 
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    private NotifyMessageHandler notifyMessageHandler; 
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    @Autowired 
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    private IDeviceService deviceService; 
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    @Override 
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    public void afterPropertiesSet() throws Exception { 
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        notifyMessageHandler.addHandler(cmdType, this); 
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    } 
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    @Override 
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    public void handForDevice(RequestEvent evt, Device device, Element element) { 
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        if (device == null) { 
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            // 未注册的设备不做处理 
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            return; 
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        } 
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        // 回复200 OK 
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        try { 
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            responseAck((SIPRequest) evt.getRequest(), Response.OK); 
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        } catch (SipException | InvalidArgumentException | ParseException e) { 
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            logger.error("[命令发送失败] 国标级联 心跳回复: {}", e.getMessage()); 
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        } 
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        // 判断RPort是否改变,改变则说明路由nat信息变化,修改设备信息 
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        // 获取到通信地址等信息 
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        ViaHeader viaHeader = (ViaHeader) evt.getRequest().getHeader(ViaHeader.NAME); 
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        String received = viaHeader.getReceived(); 
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        int rPort = viaHeader.getRPort(); 
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        // 解析本地地址替代 
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        if (ObjectUtils.isEmpty(received) || rPort == -1) { 
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            received = viaHeader.getHost(); 
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            rPort = viaHeader.getPort(); 
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        } 
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        if (device.getPort() != rPort) { 
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            device.setPort(rPort); 
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            device.setHostAddress(received.concat(":").concat(String.valueOf(rPort))); 
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        } 
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        device.setKeepaliveTime(DateUtil.getNow()); 
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        if (device.getOnline() == 1) { 
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            deviceService.updateDevice(device); 
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        }else { 
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            // 对于已经离线的设备判断他的注册是否已经过期 
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            if (!deviceService.expire(device)){ 
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                deviceService.online(device); 
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            } 
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        } 
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    } 
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    @Override 
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    public void handForPlatform(RequestEvent evt, ParentPlatform parentPlatform, Element element) { 
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        // 不会收到上级平台的心跳信息 
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    } 
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} 
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