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fixes #2499 - UPnP not working in Emby, but works in other applications

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pull/1154/head
Luke Pulverenti 7 years ago
parent ab61dcaf90
commit 86226ff97c
5 changed files with 136 additions and 31 deletions
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1
Mono.Nat/ISearcher.cs
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@ -33,6 +33,7 @@ using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.Threading.Tasks;
namespace Mono.Nat
{

4
Mono.Nat/NatUtility.cs
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@ -208,14 +208,14 @@ namespace Mono.Nat
}
}
public static void Handle(IPAddress localAddress, UpnpDeviceInfo deviceInfo, IPEndPoint endpoint, NatProtocol protocol)
public static async Task Handle(IPAddress localAddress, UpnpDeviceInfo deviceInfo, IPEndPoint endpoint, NatProtocol protocol)
{
switch (protocol)
{
case NatProtocol.Upnp:
var searcher = new UpnpSearcher(Logger, HttpClient);
searcher.DeviceFound += Searcher_DeviceFound;
searcher.Handle(localAddress, deviceInfo, endpoint);
await searcher.Handle(localAddress, deviceInfo, endpoint).ConfigureAwait(false);
break;
default:
throw new ArgumentException("Unexpected protocol: " + protocol);

52
Mono.Nat/Pmp/Searchers/PmpSearcher.cs
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@ -42,13 +42,13 @@ namespace Mono.Nat
{
internal class PmpSearcher : ISearcher
{
static PmpSearcher instance = new PmpSearcher();
public static PmpSearcher Instance
{
get { return instance; }
}
static PmpSearcher instance = new PmpSearcher();
public static PmpSearcher Instance
{
get { return instance; }
}
private int timeout;
private DateTime nextSearch;
@ -143,21 +143,21 @@ namespace Mono.Nat
}
public async void Search()
{
foreach (UdpClient s in sockets)
{
try
{
await Search(s).ConfigureAwait(false);
}
catch
{
// Ignore any search errors
}
}
}
async Task Search (UdpClient client)
{
foreach (UdpClient s in sockets)
{
try
{
await Search(s).ConfigureAwait(false);
}
catch
{
// Ignore any search errors
}
}
}
async Task Search(UdpClient client)
{
// Sort out the time for the next search first. The spec says the
// timeout should double after each attempt. Once it reaches 64 seconds
@ -175,10 +175,10 @@ namespace Mono.Nat
// The nat-pmp search message. Must be sent to GatewayIP:53531
byte[] buffer = new byte[] { PmpConstants.Version, PmpConstants.OperationCode };
foreach (IPEndPoint gatewayEndpoint in gatewayLists[client])
{
await client.SendAsync(buffer, buffer.Length, gatewayEndpoint).ConfigureAwait(false);
}
foreach (IPEndPoint gatewayEndpoint in gatewayLists[client])
{
await client.SendAsync(buffer, buffer.Length, gatewayEndpoint).ConfigureAwait(false);
}
}
bool IsSearchAddress(IPAddress address)

5
Mono.Nat/Upnp/Searchers/UpnpSearcher.cs
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@ -39,6 +39,7 @@ using System.Net.NetworkInformation;
using MediaBrowser.Common.Net;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Dlna;
using System.Threading.Tasks;
namespace Mono.Nat
{
@ -61,7 +62,7 @@ namespace Mono.Nat
{
}
public void Handle(IPAddress localAddress, UpnpDeviceInfo deviceInfo, IPEndPoint endpoint)
public async Task Handle(IPAddress localAddress, UpnpDeviceInfo deviceInfo, IPEndPoint endpoint)
{
// No matter what, this method should never throw an exception. If something goes wrong
// we should still be in a position to handle the next reply correctly.
@ -82,6 +83,8 @@ namespace Mono.Nat
UpnpNatDevice d = new UpnpNatDevice(localAddress, deviceInfo, endpoint, string.Empty, _logger, _httpClient);
NatUtility.Log("Fetching service list: {0}", d.HostEndPoint);
await d.GetServicesList().ConfigureAwait(false);
OnDeviceFound(new DeviceEventArgs(d));
}
catch (Exception ex)

105
Mono.Nat/Upnp/UpnpNatDevice.cs
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@ -90,6 +90,104 @@ namespace Mono.Nat.Upnp
}
}
public async Task GetServicesList()
{
// Create a HTTPWebRequest to download the list of services the device offers
var message = new GetServicesMessage(this.serviceDescriptionUrl, this.hostEndPoint, _logger);
using (var response = await _httpClient.SendAsync(message.Encode(), message.Method).ConfigureAwait(false))
{
OnServicesReceived(response);
}
}
private void OnServicesReceived(HttpResponseInfo response)
{
int abortCount = 0;
int bytesRead = 0;
byte[] buffer = new byte[10240];
StringBuilder servicesXml = new StringBuilder();
XmlDocument xmldoc = new XmlDocument();
using (var s = response.Content)
{
if (response.StatusCode != HttpStatusCode.OK)
{
NatUtility.Log("{0}: Couldn't get services list: {1}", HostEndPoint, response.StatusCode);
return; // FIXME: This the best thing to do??
}
while (true)
{
bytesRead = s.Read(buffer, 0, buffer.Length);
servicesXml.Append(Encoding.UTF8.GetString(buffer, 0, bytesRead));
try
{
xmldoc.LoadXml(servicesXml.ToString());
break;
}
catch (XmlException)
{
// If we can't receive the entire XML within 500ms, then drop the connection
// Unfortunately not all routers supply a valid ContentLength (mine doesn't)
// so this hack is needed to keep testing our recieved data until it gets successfully
// parsed by the xmldoc. Without this, the code will never pick up my router.
if (abortCount++ > 50)
{
return;
}
NatUtility.Log("{0}: Couldn't parse services list", HostEndPoint);
System.Threading.Thread.Sleep(10);
}
}
NatUtility.Log("{0}: Parsed services list", HostEndPoint);
XmlNamespaceManager ns = new XmlNamespaceManager(xmldoc.NameTable);
ns.AddNamespace("ns", "urn:schemas-upnp-org:device-1-0");
XmlNodeList nodes = xmldoc.SelectNodes("//*/ns:serviceList", ns);
foreach (XmlNode node in nodes)
{
//Go through each service there
foreach (XmlNode service in node.ChildNodes)
{
//If the service is a WANIPConnection, then we have what we want
string type = service["serviceType"].InnerText;
NatUtility.Log("{0}: Found service: {1}", HostEndPoint, type);
StringComparison c = StringComparison.OrdinalIgnoreCase;
// TODO: Add support for version 2 of UPnP.
if (type.Equals("urn:schemas-upnp-org:service:WANPPPConnection:1", c) ||
type.Equals("urn:schemas-upnp-org:service:WANIPConnection:1", c))
{
this.controlUrl = service["controlURL"].InnerText;
NatUtility.Log("{0}: Found upnp service at: {1}", HostEndPoint, controlUrl);
try
{
Uri u = new Uri(controlUrl);
if (u.IsAbsoluteUri)
{
EndPoint old = hostEndPoint;
this.hostEndPoint = new IPEndPoint(IPAddress.Parse(u.Host), u.Port);
NatUtility.Log("{0}: Absolute URI detected. Host address is now: {1}", old, HostEndPoint);
this.controlUrl = controlUrl.Substring(u.GetLeftPart(UriPartial.Authority).Length);
NatUtility.Log("{0}: New control url: {1}", HostEndPoint, controlUrl);
}
}
catch
{
NatUtility.Log("{0}: Assuming control Uri is relative: {1}", HostEndPoint, controlUrl);
}
NatUtility.Log("{0}: Handshake Complete", HostEndPoint);
return;
}
}
}
//If we get here, it means that we didn't get WANIPConnection service, which means no uPnP forwarding
//So we don't invoke the callback, so this device is never added to our lists
}
}
/// <summary>
/// The EndPoint that the device is at
/// </summary>
@ -122,10 +220,13 @@ namespace Mono.Nat.Upnp
get { return serviceType; }
}
public override Task CreatePortMap(Mapping mapping)
public override async Task CreatePortMap(Mapping mapping)
{
CreatePortMappingMessage message = new CreatePortMappingMessage(mapping, localAddress, this);
return _httpClient.SendAsync(message.Encode(), message.Method);
using (await _httpClient.SendAsync(message.Encode(), message.Method).ConfigureAwait(false))
{
}
}
public override bool Equals(object obj)

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