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#nullable disable
#pragma warning disable CS1591
using System;
using System.Globalization;
using System.Net.Http;
using System.Net.Mime;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Xml.Linq;
using Emby.Dlna.Common;
using MediaBrowser.Common.Net;
namespace Emby.Dlna.PlayTo
{
public class SsdpHttpClient
{
private const string USERAGENT = "Microsoft-Windows/6.2 UPnP/1.0 Microsoft-DLNA DLNADOC/1.50";
private const string FriendlyName = "Jellyfin";
private readonly CultureInfo _usCulture = new CultureInfo("en-US");
private readonly IHttpClientFactory _httpClientFactory;
public SsdpHttpClient(IHttpClientFactory httpClientFactory)
{
_httpClientFactory = httpClientFactory;
}
public async Task<XDocument> SendCommandAsync(
string baseUrl,
DeviceService service,
string command,
string postData,
string header = null,
CancellationToken cancellationToken = default)
{
var url = NormalizeServiceUrl(baseUrl, service.ControlUrl);
using var response = await PostSoapDataAsync(
url,
$"\"{service.ServiceType}#{command}\"",
postData,
header,
cancellationToken)
.ConfigureAwait(false);
await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
return await XDocument.LoadAsync(
stream,
LoadOptions.PreserveWhitespace,
cancellationToken).ConfigureAwait(false);
}
private static string NormalizeServiceUrl(string baseUrl, string serviceUrl)
{
// If it's already a complete url, don't stick anything onto the front of it
if (serviceUrl.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
return serviceUrl;
}
if (!serviceUrl.StartsWith('/'))
{
serviceUrl = "/" + serviceUrl;
}
return baseUrl + serviceUrl;
}
public async Task SubscribeAsync(
string url,
string ip,
int port,
string localIp,
int eventport,
int timeOut = 3600)
{
using var options = new HttpRequestMessage(new HttpMethod("SUBSCRIBE"), url);
options.Headers.UserAgent.ParseAdd(USERAGENT);
options.Headers.TryAddWithoutValidation("HOST", ip + ":" + port.ToString(_usCulture));
options.Headers.TryAddWithoutValidation("CALLBACK", "<" + localIp + ":" + eventport.ToString(_usCulture) + ">");
options.Headers.TryAddWithoutValidation("NT", "upnp:event");
options.Headers.TryAddWithoutValidation("TIMEOUT", "Second-" + timeOut.ToString(_usCulture));
using var response = await _httpClientFactory.CreateClient(NamedClient.Default)
.SendAsync(options, HttpCompletionOption.ResponseHeadersRead)
.ConfigureAwait(false);
}
public async Task<XDocument> GetDataAsync(string url, CancellationToken cancellationToken)
{
using var options = new HttpRequestMessage(HttpMethod.Get, url);
options.Headers.UserAgent.ParseAdd(USERAGENT);
options.Headers.TryAddWithoutValidation("FriendlyName.DLNA.ORG", FriendlyName);
using var response = await _httpClientFactory.CreateClient(NamedClient.Default).SendAsync(options, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
try
{
return await XDocument.LoadAsync(
stream,
LoadOptions.PreserveWhitespace,
cancellationToken).ConfigureAwait(false);
}
catch
{
return null;
}
}
private async Task<HttpResponseMessage> PostSoapDataAsync(
string url,
string soapAction,
string postData,
string header,
CancellationToken cancellationToken)
{
if (soapAction[0] != '\"')
{
soapAction = $"\"{soapAction}\"";
}
using var options = new HttpRequestMessage(HttpMethod.Post, url);
options.Headers.UserAgent.ParseAdd(USERAGENT);
options.Headers.TryAddWithoutValidation("SOAPACTION", soapAction);
options.Headers.TryAddWithoutValidation("Pragma", "no-cache");
options.Headers.TryAddWithoutValidation("FriendlyName.DLNA.ORG", FriendlyName);
if (!string.IsNullOrEmpty(header))
{
options.Headers.TryAddWithoutValidation("contentFeatures.dlna.org", header);
}
options.Content = new StringContent(postData, Encoding.UTF8, MediaTypeNames.Text.Xml);
return await _httpClientFactory.CreateClient(NamedClient.Default).SendAsync(options, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
}
}
}
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