/// <summary>
/// Gets the absolute URL for a service
/// </summary>
/// <param name="device">UPnP device to control</param>
/// <param name="service">UPnP service</param>
/// <returns>the absolute URL for the service</returns>
protected Uri GetControlUri(Device device, Service service)
{
var requestUri = new Uri(service.ControlURL, UriKind.RelativeOrAbsolute);
if (!requestUri.IsAbsoluteUri || requestUri.IsFile) // In Mono.Android, requestUri is not a relative uri but a file
{
requestUri = new Uri(new Uri(device.URLBase), requestUri);
}
return requestUri;
}
private IService ConvertService(UPnP.Service service)
{
if (service.ServiceId == ContentDirectory.Service.ServiceId)
{
return new ContentDirectory.Service(this, service);
}
else
{
// ignore unsupported service.
return null;
}
}
/// <summary>
/// Action call
/// </summary>
/// <param name="httpClient">HTTPClient</param>
/// <param name="service">UPnP service</param>
/// <param name="controlURL">control URL</param>
/// <param name="action">action</param>
/// <param name="headers">optional HTTP headers</param>
/// <returns>HTTP response message</returns>
protected async Task<HttpResponseMessage> PostActionAsync(HttpClient httpClient, Service service, Uri controlURL, object action,
params Tuple<string, string>[] headers)
{
var xmlRootAttribute = action.GetType().GetTypeInfo().GetCustomAttribute<XmlRootAttribute>();
xmlRootAttribute.Namespace = service.ServiceType;
var request = new StringContent(String.Format(SOAP_ENVELOPE, XmlSerializerUtility.Serialize(action, xmlRootAttribute,
new XmlQualifiedName("u", service.ServiceType))), Encoding.UTF8, "text/xml");
request.Headers.Add("SOAPAction", $"\"{service.ServiceType}#{xmlRootAttribute.ElementName}\"");
if (headers != null)
{
foreach (var header in headers)
{
request.Headers.Add(header.Item1, header.Item2);
}
}
return await httpClient.PostAsync(controlURL, request);
}