c# - 如何使用 Onvif 库 c# 获取设备信息？

Question

我正在制作一个 c# windows 应用程序，它使用开源库 Onvif 收集连接到我的网络的设备。

我是这样做的。

    ServicePointManager.Expect100Continue = false;
    var endPointAddress = new EndpointAddress("http://ip_address:port/onvif/device_service");
    var httpBinding = new HttpTransportBindingElement();            
    var bind = new CustomBinding(httpBinding);
    var temp = new DeviceClient(bind, endPointAddress);
    var request = new GetDeviceInformationRequest();
    var response = temp.GetDeviceInformation(request); ////// Error Here described bellow
    string firm = response.FirmwareVersion;
    string manu = response.Manufacturer;
    string serial = response.SerialNumber;
    string model = response.Model;

错误消息::在 http://something:port/onvif/device_service 上没有监听可以接受消息的端点。这通常是由不正确的地址或 SOAP 操作引起的

谁能帮帮我？

我想我没有与服务器建立正确的连接，是这样吗？如果是那么如何解决？

Answer 1

也许 WS-DISCOVERY 会为您提供额外的信息。我会尽量不使用相机 IP 后的任何端口。

当测试向组播地址 239.255.255.250，端口 3702 (WS-Discovery) 发送 UDP 时，这是摄像头的回答:

<?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" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:d="http://schemas.xmlsoap.org/ws/2005/04/discovery" xmlns:dn="http://www.onvif.org/ver10/network/wsdl">
  <SOAP-ENV:Header>
    <wsa:MessageID>uuid:cb3dea50-aa60-11e1-88b9-00408cb972aa</wsa:MessageID>
    <wsa:RelatesTo>uuid:5bca11ff-61b8-4d07-8a26-90274ad51db8</wsa:RelatesTo>
    <wsa:To SOAP-ENV:mustUnderstand="true">http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:To>
    <wsa:Action SOAP-ENV:mustUnderstand="true">http://schemas.xmlsoap.org/ws/2005/04/discovery/ProbeMatches</wsa:Action>
    <d:AppSequence SOAP-ENV:mustUnderstand="true" MessageNumber="1" InstanceId="1338367479"></d:AppSequence>
  </SOAP-ENV:Header>
  <SOAP-ENV:Body>
    <d:ProbeMatches>
      <d:ProbeMatch>
        <wsa:EndpointReference>
          <wsa:Address>urn:uuid:65a142fc-a41e-11e1-9cc8-00408cb972aa</wsa:Address>
        </wsa:EndpointReference>
        <d:Types>dn:NetworkVideoTransmitter</d:Types>
        <d:Scopes>
            onvif://www.onvif.org/type/video_encoder 
            onvif://www.onvif.org/type/ptz 
            onvif://www.onvif.org/hardware/P5534-E 
            onvif://www.onvif.org/name/AXIS%20P5534-E 
            onvif://www.onvif.org/location/ 
        </d:Scopes>
        <d:XAddrs>
            h##p://zeroconfIP/onvif/device_service 
            h##p://unicastIP/onvif/device_service
        </d:XAddrs>
        <d:MetadataVersion>1</d:MetadataVersion>
      </d:ProbeMatch>
    </d:ProbeMatches>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

尝试发现响应并查看是否有任何 XAddrs 不是您期望的默认值。