Question

尝试在Android上实现onvif客户端以与IP摄像机配合使用。我想使用WS-Subscription实现事件订阅。出于某些目的，我的请求提供了正确的响应，但是我的服务器未接收任何消息。在下面查看我的要求。

====请求====

<?xml version="1.0" encoding="UTF-8"?>
 <s:Envelope
    xmlns:s="http://www.w3.org/2003/05/soap-envelope"
    xmlns:a="http://www.w3.org/2005/08/addressing">
    <s:Header>
        <a:Action s:mustUnderstand="1">http://docs.oasis-open.org/wsn/bw-2/NotificationProducer/SubscribeRequest</a:Action>
        <a:ReplyTo><a:Address>http://www.w3.org/2005/08/addressing/anonymous</a:Address></a:ReplyTo>
        <a:To s:mustUnderstand="1">http://192.168.0.239:8080/onvif/events</a:To>
    </s:Header>
    <s:Body
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:xsd="http://www.w3.org/2001/XMLSchema">
        <Subscribe
            xmlns="http://docs.oasis-open.org/wsn/b-2">
            <ConsumerReference>
                <a:Address>
                    http://192.168.0.247:9090/subscription-1
                </a:Address>
            </ConsumerReference>
            <InitialTerminationTime>
                PT60S
                </InitialTerminationTime>
            </Subscribe>
        </s:Body>
</s:Envelope>
            <tet:Timeout>PT1M</tet:Timeout>
            <tet:MessageLimit>10</tet:MessageLimit>
        </tet:PullMessages>
    </e:Body>
</e:Envelope>

====响应====

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope" xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding" 
...>
    <SOAP-ENV:Header>
        <wsa5:ReplyTo SOAP-ENV:mustUnderstand="true">
            <wsa5:Address>http://www.w3.org/2005/08/addressing/anonymous</wsa5:Address>
        </wsa5:ReplyTo>
        <wsa5:To SOAP-ENV:mustUnderstand="true">http://192.168.0.239:8080/onvif/events</wsa5:To>
        <wsa5:Action SOAP-ENV:mustUnderstand="true">http://docs.oasis-open.org/wsn/bw-2/NotificationProducer/SubscribeResponse</wsa5:Action>
    </SOAP-ENV:Header>
    <SOAP-ENV:Body>
        <wsnt:SubscribeResponse>
            <wsnt:SubscriptionReference>
                <wsa5:Address>http://192.168.0.239:8080/onvif/Subscription?Idx=0</wsa5:Address>
            </wsnt:SubscriptionReference>
            <wsnt:CurrentTime>2018-06-20T10:16:22Z</wsnt:CurrentTime>
            <wsnt:TerminationTime>2018-06-20T10:17:22Z</wsnt:TerminationTime>
        </wsnt:SubscribeResponse>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

====服务器====

class SimpleWebServer @Throws(IOException::class)
constructor() : NanoHTTPD(9090) {

    override fun serve(session: IHTTPSession): Response {
        val data = HashMap<String, String>()
        val method = session.method
        session.parseBody(data)
        // get the POST body
        val postBody = session.getQueryParameterString()
        // or you can access the POST request's parameters
        val postParameter = session.getParms()["parameter"]
        Log.d("SimpleWebServer", "$method : $postBody")

        return NanoHTTPD.newFixedLengthResponse("").also { response response.status = Response.Status.ACCEPTED } // Or postParameter.
    }
}

Answer 1

您的XML请求似乎不正确。 ONVIF core specs在第9.10节中提供了有关如何订阅事件的示例。它包含许多XML，因此不值得在此处复制。基本上，您要做的是以下任务列表：

调用GetEventPropertiesRequest到受支持事件的列表（§9.10.1）
调用CreatePullPointSubscription创建PullPoint（§9.10.3）
通过调用PullMessages（第9.10.5节）获取事件
（可选）Renew和/或从中拉出Unsubscribe。

有关如何使用通知流界面的说明，请查看ONVIF Application Programming Guide的§7.6

为什么ONVIF订阅方法不起作用？

1 个答案: