C# 如何使用ONVIF对AXIS相机进行身份验证

我有3台ONVIF摄像机（博世、Pansonic和AXIS）。我使用WS-Discovery查找摄像头，并可以使用GetDeviceInformation从摄像头获取信息。我的问题是，当我试图从AXIS相机获取信息时，AXIS相机返回（400）错误的请求，而另外两个相机工作得很好

我已从SourceForge安装了ONVIF设备管理器。如果我在程序中输入登录凭据，我可以从AXIS摄像机流式传输实时视频。如果我没有输入任何登录凭据，我可以找到相机，但不能流式传输任何视频。基于此，我得出结论，相机配置正确

我认为这与绑定上的登录凭据有关，但无法找出问题所在

我的代码如下所示

private void CustomBinding2()
{
        try
        {
            const string SERVICE_ADDRESS_DIRECT = "http://192.168.1.72/onvif/device_service"; //400 bad request
            const string USERNAME = "cbk";
            const string PASSWORD = "12";

            HttpTransportBindingElement httpTransportBindingElement = new HttpTransportBindingElement();
            httpTransportBindingElement.MaxReceivedMessageSize = Int32.MaxValue;
            httpTransportBindingElement.KeepAliveEnabled = false;
            httpTransportBindingElement.MaxBufferSize = Int32.MaxValue;
            httpTransportBindingElement.ProxyAddress = null;
            httpTransportBindingElement.BypassProxyOnLocal = true;
            httpTransportBindingElement.UseDefaultWebProxy = false;
            httpTransportBindingElement.TransferMode = TransferMode.StreamedResponse;
            httpTransportBindingElement.AuthenticationScheme = AuthenticationSchemes.Basic;

            TextMessageEncodingBindingElement messegeElement = new TextMessageEncodingBindingElement();
            messegeElement.MessageVersion = MessageVersion.CreateVersion(EnvelopeVersion.Soap12, AddressingVersion.None);

            CustomBinding binding = new CustomBinding(messegeElement, httpTransportBindingElement);
            binding.CloseTimeout = TimeSpan.FromSeconds(30.0);
            binding.OpenTimeout = TimeSpan.FromSeconds(30.0);
            binding.SendTimeout = TimeSpan.FromMinutes(10.0);
            binding.ReceiveTimeout = TimeSpan.FromMinutes(3.0);

            EndpointAddress serviceAddress = new EndpointAddress(SERVICE_ADDRESS_DIRECT);

            ChannelFactory<Device> channelFactory = new ChannelFactory<Device>(binding, serviceAddress);
            channelFactory.Credentials.UserName.UserName = USERNAME;
            channelFactory.Credentials.UserName.Password = PASSWORD;

            Device channel = channelFactory.CreateChannel();

            string model, firmwareVersion, serialNumber, hardwareId;
            channel.GetDeviceInformation(out model, out firmwareVersion, out serialNumber, out hardwareId);
            MessageBox.Show(string.Format("Model: {0}", model));
        }
        catch (Exception e)
        {
            MessageBox.Show(e.Message);
        }
}

private void CustomBinding2（）
{
尝试
{
常量字符串服务\u地址\u直接=”http://192.168.1.72/onvif/device_service“；//400错误的请求
常量字符串USERNAME=“cbk”；
const string PASSWORD=“12”；
HttpTransportBindingElement HttpTransportBindingElement=新的HttpTransportBindingElement（）；
httpTransportBindingElement.MaxReceivedMessageSize=Int32.MaxValue；
httpTransportBindingElement.KeepAliveEnabled=false；
httpTransportBindingElement.MaxBufferSize=Int32.MaxValue；
httpTransportBindingElement.ProxyAddress=null；
httpTransportBindingElement.BypassProxyOnLocal=true；
httpTransportBindingElement.UseDefaultWebProxy=false；
httpTransportBindingElement.TransferMode=TransferMode.StreamdResponse；
httpTransportBindingElement.AuthenticationScheme=AuthenticationSchemes.Basic；
TextMessageEncodingBindingElement消息元素=新的TextMessageEncodingBindingElement（）；
messegeElement.MessageVersion=MessageVersion.CreateVersion（EnveloperVersion.Soap12，AddressingVersion.None）；
CustomBinding=新的CustomBinding（messegeElement、httpTransportBindingElement）；
binding.CloseTimeout=TimeSpan.FromSeconds（30.0）；
binding.OpenTimeout=TimeSpan.FromSeconds（30.0）；
binding.SendTimeout=TimeSpan.FromMinutes（10.0）；
binding.ReceiveTimeout=TimeSpan.FromMinutes（3.0）；
EndpointAddress serviceAddress=新的EndpointAddress（服务地址直接）；
ChannelFactory ChannelFactory=新的ChannelFactory（绑定，服务地址）；
channelFactory.Credentials.UserName.UserName=用户名；
channelFactory.Credentials.UserName.Password=密码；
设备通道=channelFactory.CreateChannel（）；
字符串模型，固件版本，序列号，硬件ID；
获取设备信息（输出型号、输出固件版本、输出序列号、输出硬件ID）；
Show（string.Format（“Model:{0}”，Model））；
}
捕获（例外e）
{
MessageBox.Show（e.Message）；
}
}

解决了问题

欺骗我最多的事情之一是AXIS摄像头和客户端（PC）必须在+-5秒内实现时间同步。如果我更改PC时间，我只会收到400个错误请求。如果时间匹配，一切正常

            DateTime UTCTime = DateTime.UtcNow;

            tbInfo.AppendText(string.Format("Client Local Time: {0}\n", DateTime.Now.ToString("HH:mm:ss")));
            tbInfo.AppendText(string.Format("Client UTC Time: {0}\n", UTCTime.ToString("HH:mm:ss")));
            tbInfo.AppendText("\n\n");

            HttpTransportBindingElement httpTransport = new HttpTransportBindingElement();

            TransportSecurityBindingElement transportSecurity = new TransportSecurityBindingElement();
            transportSecurity.EndpointSupportingTokenParameters.SignedEncrypted.Add(new UsernameTokenParameters());
            transportSecurity.AllowInsecureTransport = true;
            transportSecurity.IncludeTimestamp = false;

            TextMessageEncodingBindingElement textMessageEncoding = new TextMessageEncodingBindingElement(MessageVersion.Soap12, Encoding.UTF8);

            CustomBinding binding = new CustomBinding(transportSecurity, textMessageEncoding, httpTransport);

            EndpointAddress serviceAddress = new EndpointAddress(addressDirect);
            ChannelFactory<Device> channelFactory = new ChannelFactory<Device>(binding, serviceAddress);

            UsernameClientCredentials credentials = new UsernameClientCredentials(new UsernameInfo(username, password));

            channelFactory.Endpoint.Behaviors.Remove(typeof(ClientCredentials));
            channelFactory.Endpoint.Behaviors.Add(credentials);

            Device channel = channelFactory.CreateChannel();

            var unitTime = channel.GetSystemDateAndTime(new GetSystemDateAndTimeRequest());
            tbInfo.AppendText(string.Format("Camera Local Time: {0}:{1}:{2}\n", unitTime.SystemDateAndTime.LocalDateTime.Time.Hour, unitTime.SystemDateAndTime.LocalDateTime.Time.Minute, unitTime.SystemDateAndTime.LocalDateTime.Time.Second));
            tbInfo.AppendText(string.Format("Camera UTC Time: {0}:{1}:{2}\n", unitTime.SystemDateAndTime.UTCDateTime.Time.Hour, unitTime.SystemDateAndTime.UTCDateTime.Time.Minute, unitTime.SystemDateAndTime.UTCDateTime.Time.Second));

            var info = channel.GetDeviceInformation(new GetDeviceInformationRequest());
            MessageBox.Show(string.Format("Model: {0}", info.Model));

DateTime UTCTime=DateTime.UtcNow；
tbInfo.AppendText（string.Format（“客户端本地时间：{0}\n”，DateTime.Now.ToString（“HH:mm:ss”））；
tbInfo.AppendText（string.Format（“客户端UTC时间：{0}\n”，UTCTime.ToString（“HH:mm:ss”））；
tbInfo.AppendText（“\n\n”）；
HttpTransportBindingElement httpTransport=新的HttpTransportBindingElement（）；
TransportSecurityBindingElement transportSecurity=新的TransportSecurityBindingElement（）；
transportSecurity.EndpointSupportingTokenParameters.SignedEncrypted.Add（新用户名TokenParameters（））；
transportSecurity.AllowInsecureTransport=true；
transportSecurity.IncludeTimestamp=false；
TextMessageEncodingBindingElement textMessageEncoding=新的TextMessageEncodingBindingElement（MessageVersion.Soap12，Encoding.UTF8）；
CustomBinding=新的CustomBinding（transportSecurity、textMessageEncoding、httpTransport）；
EndpointAddress serviceAddress=新的EndpointAddress（addressDirect）；
ChannelFactory ChannelFactory=新的ChannelFactory（绑定，服务地址）；
UsernameClientCredentials=newusernameclientcredentials（newusernameinfo（username，password））；
移除（typeof（ClientCredentials））；
channelFactory.Endpoint.Behaviors.Add（凭据）；
设备通道=channelFactory.CreateChannel（）；
var unitTime=channel.GetSystemDateAndTime（新的GetSystemDateAndTimeRequest（））；
tbInfo.AppendText（string.Format（“摄影机本地时间：{0}:{1}:{2}\n”，unitTime.SystemDateAndTime.LocalDateTime.Time.Hour，unitTime.SystemDateAndTime.LocalDateTime.Time.Minute，unitTime.SystemDateAndTime.LocalDateTime.Time.Second））；
tbInfo.AppendText（string.Format（“相机UTC时间：{0}:{1}:{2}\n”，unitTime.SystemDateAndTime.UTCDateTime.Time.Hour，unitTime.SystemDateAndTime.UTCDateTime.Time.Minute，unitTime.SystemDateAndTime.UTCDateTime.Time.Second））；
var info=channel.GetDeviceInformation（新的GetDeviceInformation请求（））；
Show（string.Format（“Model:{0}”，info.Model））；

能否提供有关此代码段中使用的UsernameTokenParameters类的更多信息？我找不到这门课的来源。。。