ONVIF:如何从支持ONVIF的IP摄像机的IP地址中形成DeviceIO Web服务地址 [英] ONVIF : How to form the DeviceIO web service address from the IP address of an ONVIF supported IP camera

问题描述

我具有支持ONVIF的IP摄像机的IP地址，如何形成DeviceIO Web服务的地址?

I have the IP address of an ONVIF supported IP camera,how do I form the address of the DeviceIO web service?

推荐答案

一种可靠的方法如下:

1. 使用WS-Discovery探测相机
2. 从ProbeMatch中提取字段XAddr.通常是http://<ip_addr>/onvif/device_service，但不能保证总是这样.
3. 验证您的相机是否支持GetCapabilities或是否具有新的GetServices.
4. 从GetCapabilitiesRepsonse或GetServicesResponse中的任何一个验证您的设备是否支持设备I/O服务并获取相应的XAddr.

1. Probe the camera, by using the WS-Discovery
2. Extract the field XAddr from the ProbeMatch. Usually it is http://<ip_addr>/onvif/device_service, but it is not guaranteed always to be like this.
3. Verify if your camera supports GetCapabilities or it has the new GetServices.
4. Either from GetCapabilitiesRepsonse or GetServicesResponse verify if your device supports the Device I/O service and get the corresponding XAddr.

请注意，初始握手可能会比较棘手，因为如果摄像机仅支持UsernameToken进行身份验证，则需要将客户端与设备时钟同步.看看ONVIF 应用程序员的指南以获取更多详细信息.

Beware that the initial handshake may be tricky, because if the camera only supports UsernameToken for authtentication, you'll need to syncronize your client with the device's clock. Have a look at the ONVIF Application Programmer's Guide for further details.

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