private bool CheckAvailability()
{
#if DOTNETCORE
return(false);
#endif
switch (m_status)
{
case UPnPStatus.NotAvailable:
return(false);
case UPnPStatus.Available:
return(true);
case UPnPStatus.Discovering:
if (m_discoveryComplete.WaitOne(c_discoveryTimeOutMillis))
{
return(true);
}
if (NetTime.Now > m_discoveryResponseDeadline)
{
m_status = UPnPStatus.NotAvailable;
}
return(false);
}
return(false);
}
internal void Discover(NetPeer peer)
{
string content =
"M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n";
m_discoveryResponseDeadline = NetTime.Now + 6.0; // arbitrarily chosen number, router gets 6 seconds to respond
m_status = UPnPStatus.Discovering;
byte[] raw = System.Text.Encoding.UTF8.GetBytes(content);
m_peer.LogDebug("Attempting UPnP discovery");
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
if (peer.Configuration.BroadcastAddress.Equals(IPAddress.Broadcast))
{
foreach (IPAddress address in NetUtility.GetBroadcastAddresses())
{
peer.RawSend(raw, 0, raw.Length, new NetEndPoint(address, 1900));
}
}
else
{
peer.RawSend(raw, 0, raw.Length, new NetEndPoint(peer.Configuration.BroadcastAddress, 1900));
}
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, false);
}
private bool CheckAvailability()
{
switch (Status)
{
case UPnPStatus.NotAvailable:
return(false);
case UPnPStatus.Available:
return(true);
case UPnPStatus.Discovering:
while (!discoveryComplete.WaitOne(DiscoveryTimeOutMs))
{
if (DateTime.UtcNow > discoveryResponseDeadline)
{
Status = UPnPStatus.NotAvailable;
return(false);
}
}
return(true);
}
return(false);
}
public NetUPnPDiscoveryEventArgs(
NetUPnP upnp, UPnPStatus status, TimeSpan discoveryStartTime, TimeSpan discoveryEndTime)
{
UPnP = upnp ?? throw new ArgumentNullException(nameof(upnp));
Status = status;
DiscoveryStartTime = discoveryStartTime;
DiscoveryEndTime = discoveryEndTime;
}
internal void Invalidate(TimeSpan endTime)
{
_discoveryStartTime = default;
_serviceName = "";
_serviceUri = null;
Status = UPnPStatus.NotAvailable;
StatusChanged?.Invoke(this, new NetUPnPDiscoveryEventArgs(this, Status, _discoveryStartTime, endTime));
}
internal void CheckForDiscoveryTimeout()
{
if ((m_status != UPnPStatus.Discovering) || (NetTime.Now < m_discoveryResponseDeadline))
{
return;
}
m_peer.LogDebug("UPnP discovery timed out");
m_status = UPnPStatus.NotAvailable;
}
internal void ExtractServiceUri(Uri location)
{
TimeSpan discoveryEndTime = NetTime.Now;
try
{
var desc = new XmlDocument();
using (WebResponse rep = WebRequest.Create(location).GetResponse())
using (Stream stream = rep.GetResponseStream())
desc.Load(stream);
var nsMgr = new XmlNamespaceManager(desc.NameTable);
nsMgr.AddNamespace("tns", "urn:schemas-upnp-org:device-1-0");
XmlNode?typen = desc.SelectSingleNode("//tns:device/tns:deviceType/text()", nsMgr);
if (typen?.Value == null || !typen.Value.Contains("InternetGatewayDevice", StringComparison.Ordinal))
{
Invalidate(discoveryEndTime);
return;
}
_serviceName = "WANIPConnection";
XmlNode?node = desc.SelectSingleNode(
"//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" +
_serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
{
//try another service name
_serviceName = "WANPPPConnection";
node = desc.SelectSingleNode(
"//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" +
_serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
}
if (node?.Value == null)
{
Invalidate(discoveryEndTime);
return;
}
Uri controlUri = new(node.Value, UriKind.RelativeOrAbsolute);
_serviceUri = controlUri.IsAbsoluteUri
? controlUri
: new Uri(new Uri(location.GetLeftPart(UriPartial.Authority)), controlUri);
Status = UPnPStatus.Available;
StatusChanged?.Invoke(this, new NetUPnPDiscoveryEventArgs(this, Status, _discoveryStartTime, discoveryEndTime));
}
catch
{
Invalidate(discoveryEndTime);
throw;
}
}
internal void CheckForDiscoveryTimeout()
{
if (NetTime.Now < m_discoveryResponseDeadline)
{
return;
}
lock (DiscoveryResults)
m_status = DiscoveryResults.Count > 0 ? UPnPStatus.Available : UPnPStatus.NotAvailable;
m_discoveryComplete.Set();
m_peer.LogDebug("UPnP service ready");
}
internal void CheckForDiscoveryTimeout()
{
if (m_status == UPnPStatus.NotAvailable || NetTime.Now < m_discoveryResponseDeadline)
{
return;
}
lock (m_discoveryResults) {
m_status = (m_discoveryResults.Count > 0 ? UPnPStatus.Available : UPnPStatus.NotAvailable);
}
m_discoveryComplete.Set();
m_peer.LogDebug("UPnP discovery timed out");
}
internal void ExtractServiceUrl(string resp)
{
#if !DOTNETCORE
#if !DEBUG
try
{
#endif
XmlDocument desc = new XmlDocument();
using (var response = await WebRequest.Create(resp).GetResponseAsync())
desc.Load(response.GetResponseStream());
XmlNamespaceManager nsMgr = new XmlNamespaceManager(desc.NameTable);
nsMgr.AddNamespace("tns", "urn:schemas-upnp-org:device-1-0");
//XmlNode typen = desc.SelectSingleNode("//tns:device/tns:deviceType/text()", nsMgr);
//var a = desc.DocumentElement;
a.
if (!typen.Value.Contains("InternetGatewayDevice"))
{
return;
}
m_serviceName = "WANIPConnection";
XmlNode node = desc.SelectSingleNode("//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" + m_serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
{
//try another service name
m_serviceName = "WANPPPConnection";
node = desc.SelectSingleNode("//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" + m_serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
{
return;
}
}
m_serviceUrl = CombineUrls(resp, node.Value);
m_peer.LogDebug("UPnP service ready");
m_status = UPnPStatus.Available;
m_discoveryComplete.Set();
#if !DEBUG
}
catch
{
m_peer.LogVerbose("Exception ignored trying to parse UPnP XML response");
return;
}
#endif
#endif // !DOTNETCORE
}
internal void Discover()
{
string str =
"M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n";
discoveryResponseDeadline = DateTime.UtcNow.AddSeconds(6);
Status = UPnPStatus.Discovering;
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(str);
this.logger.WriteInfo("Attempting UPnP discovery");
socket.SendTo(buffer, new IPEndPoint(NetUtility.GetBroadcastAddress(), 1900));
}
internal void Discover(NetPeer peer)
{
string str =
"M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n";
m_discoveryResponseDeadline = NetTime.Now + 6.0; // arbitrarily chosen number, router gets 6 seconds to respond
m_status = UPnPStatus.Discovering;
byte[] arr = System.Text.Encoding.UTF8.GetBytes(str);
m_peer.LogDebug("Attempting UPnP discovery");
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
peer.RawSend(arr, 0, arr.Length, new NetEndPoint(NetUtility.GetBroadcastAddress(), 1900));
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, false);
}
internal bool ExtractServiceUrl(string resp)
{
try
{
XmlDocument desc = new XmlDocument();
using (WebResponse response = WebRequest.Create(resp).GetResponse())
{
desc.Load(response.GetResponseStream());
}
XmlNamespaceManager nsMgr = new XmlNamespaceManager(desc.NameTable);
nsMgr.AddNamespace("tns", "urn:schemas-upnp-org:device-1-0");
XmlNode typen = desc.SelectSingleNode("//tns:device/tns:deviceType/text()", nsMgr);
if (!typen.Value.Contains("InternetGatewayDevice"))
{
return(false);
}
serviceName = "WANIPConnection";
XmlNode node = desc.SelectSingleNode("//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" + serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
{
//try another service name
serviceName = "WANPPPConnection";
node = desc.SelectSingleNode("//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" + serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
{
return(false);
}
}
serviceUrl = CombineUrls(resp, node.Value);
this.logger.WriteInfo("UPnP service ready");
Status = UPnPStatus.Available;
discoveryComplete.Set();
return(true);
}
catch (Exception e)
{
this.logger.WriteError("Exception while parsing UPnP Service URL: " + e.Message);
return(false);
}
}
internal void Discover(NetPeer peer)
{
string str =
"M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n";
m_discoveryResponseDeadline = NetTime.Now + 6.0; // arbitrarily chosen number, router gets 6 seconds to respond
m_status = UPnPStatus.Discovering;
byte[] arr = System.Text.Encoding.UTF8.GetBytes(str);
m_peer.LogDebug("Attempting UPnP discovery");
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
peer.RawSend(arr, 0, arr.Length, new NetEndPoint(NetUtility.GetBroadcastAddress(), 1900));
peer.Socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, false);
}
private bool CheckAvailability()
{
if (m_status == UPnPStatus.Discovering)
{
m_discoveryComplete.WaitOne(c_discoveryTimeOutMillis);
lock (m_discoveryResults) {
if (m_discoveryResults.Count > 0)
{
m_status = UPnPStatus.Available;
}
else if (NetTime.Now > m_discoveryResponseDeadline)
{
m_status = UPnPStatus.NotAvailable;
}
}
}
return(m_status == UPnPStatus.Available);
}
public void Discover()
{
if (Peer.Socket == null)
{
throw new InvalidOperationException("The associated peer has no socket.");
}
string str =
"M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST:upnp:rootdevice\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n";
byte[] arr = _encoding.GetBytes(str);
_discoveryStartTime = NetTime.Now;
Status = UPnPStatus.Discovering;
Peer.Socket.EnableBroadcast = true;
Peer.RawSend(arr, 0, arr.Length, new IPEndPoint(IPAddress.Broadcast, 1900));
Peer.Socket.EnableBroadcast = false;
}
internal void ExtractServiceUrl(string resp)
{
#if !DEBUG
try
{
#endif
XmlDocument desc = new XmlDocument();
desc.Load(WebRequest.Create(resp).GetResponse().GetResponseStream());
XmlNamespaceManager nsMgr = new XmlNamespaceManager(desc.NameTable);
nsMgr.AddNamespace("tns", "urn:schemas-upnp-org:device-1-0");
XmlNode typen = desc.SelectSingleNode("//tns:device/tns:deviceType/text()", nsMgr);
if (!typen.Value.Contains("InternetGatewayDevice"))
return;
m_serviceName = "WANIPConnection";
XmlNode node = desc.SelectSingleNode("//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" + m_serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
{
//try another service name
m_serviceName = "WANPPPConnection";
node = desc.SelectSingleNode("//tns:service[tns:serviceType=\"urn:schemas-upnp-org:service:" + m_serviceName + ":1\"]/tns:controlURL/text()", nsMgr);
if (node == null)
return;
}
m_serviceUrl = CombineUrls(resp, node.Value);
m_peer.LogDebug("UPnP service ready");
m_status = UPnPStatus.Available;
m_discoveryComplete.Set();
#if !DEBUG
}
catch
{
m_peer.LogVerbose("Exception ignored trying to parse UPnP XML response");
return;
}
#endif
}
private bool CheckAvailability()
{
switch (m_status)
{
case UPnPStatus.NotAvailable:
return false;
case UPnPStatus.Available:
return true;
case UPnPStatus.Discovering:
if (m_discoveryComplete.WaitOne(c_discoveryTimeOutMillis))
return true;
if (NetTime.Now > m_discoveryResponseDeadline)
m_status = UPnPStatus.NotAvailable;
return false;
}
return false;
}
internal void CheckForDiscoveryTimeout()
{
if ((m_status != UPnPStatus.Discovering) || (NetTime.Now < m_discoveryResponseDeadline))
return;
m_peer.LogDebug("UPnP discovery timed out");
m_status = UPnPStatus.NotAvailable;
}
private void UPnPTimerCallback(object state)
{
try
{
DefaultNetworkInfo defaultNetworkInfo = NetUtilities.GetDefaultNetworkInfo();
if (defaultNetworkInfo == null)
{
//no internet available;
_upnpStatus = UPnPStatus.NoInternetConnection;
return;
}
if (defaultNetworkInfo.IsPublicIP)
{
//public ip so no need to do port forwarding
_upnpStatus = UPnPStatus.PortForwardingNotRequired;
return;
}
IPEndPoint LocalNetworkEP = new IPEndPoint(defaultNetworkInfo.LocalIP, ((IPEndPoint)_tcpListener.LocalEndpoint).Port);
try
{
if ((_upnp == null) || (!_upnp.NetworkBroadcastAddress.Equals(defaultNetworkInfo.BroadcastIP)))
{
_upnp = InternetGatewayDevice.Discover(defaultNetworkInfo.BroadcastIP, 30000);
}
}
catch
{
_upnpStatus = UPnPStatus.UPnPDeviceNotFound;
throw;
}
//find external ip from router
try
{
IPAddress externalIP = _upnp.GetExternalIPAddress();
if (!_externalSelfEP.Address.Equals(externalIP))
{
_externalSelfEP = new IPEndPoint(externalIP, _externalSelfEP.Port);
}
}
catch
{ }
int externalPort = LocalNetworkEP.Port;
bool isTCPMapped = false;
try
{
int loopCount = 0;
while (true)
{
PortMappingEntry portMap = _upnp.GetSpecificPortMappingEntry(ProtocolType.Tcp, externalPort);
if (portMap == null)
{
break; //port available
}
if (portMap.InternalEP.Equals(LocalNetworkEP))
{
//port already mapped with us
isTCPMapped = true;
_upnpStatus = UPnPStatus.PortForwarded;
break;
}
//find new port for mapping
if (externalPort < ushort.MaxValue)
{
externalPort++;
}
else
{
externalPort = 1024;
}
if (loopCount > ushort.MaxValue)
{
return;
}
loopCount++;
}
}
catch { }
if (!isTCPMapped)
{
try
{
_upnp.AddPortMapping(ProtocolType.Tcp, externalPort, LocalNetworkEP, "BitChat - TCP");
if (_externalSelfEP.Port != externalPort)
{
_externalSelfEP = new IPEndPoint(_externalSelfEP.Address, externalPort);
}
_upnpStatus = UPnPStatus.PortForwarded;
Debug.Write("BitChatClient.UPnPTimerCallback", "tcp port mapped " + externalPort);
}
catch
{
try
{
_upnp.DeletePortMapping(ProtocolType.Tcp, externalPort);
_upnp.AddPortMapping(ProtocolType.Tcp, externalPort, LocalNetworkEP, "BitChat - TCP");
if (_externalSelfEP.Port != externalPort)
{
_externalSelfEP = new IPEndPoint(_externalSelfEP.Address, externalPort);
}
_upnpStatus = UPnPStatus.PortForwarded;
Debug.Write("BitChat.UPnPTimerCallback", "tcp port mapped " + externalPort);
}
catch { }
}
}
}
catch (Exception ex)
{
Debug.Write("BitChat.UPnPTimerCallback", ex);
}
finally
{
if (_upnpTimer != null)
{
switch (_upnpStatus)
{
case Connections.UPnPStatus.UPnPDeviceNotFound:
_upnpTimer.Change(10000, Timeout.Infinite);
break;
default:
_upnpTimer.Change(UPNP_TIMER_INTERVAL, Timeout.Infinite);
break;
}
}
}
}
private void UPnPTimerCallback(object state)
{
try
{
DefaultNetworkInfo defaultNetworkInfo = NetUtilities.GetDefaultNetworkInfo();
if (defaultNetworkInfo == null)
{
//no internet available;
_upnpStatus = UPnPStatus.NoInternetConnection;
return;
}
if (defaultNetworkInfo.IsPublicIP)
{
//public ip so no need to do port forwarding
_upnpStatus = UPnPStatus.PortForwardingNotRequired;
return;
}
IPEndPoint LocalNetworkEP = new IPEndPoint(defaultNetworkInfo.LocalIP, ((IPEndPoint)_tcpListener.LocalEndpoint).Port);
try
{
if ((_upnp == null) || (!_upnp.NetworkBroadcastAddress.Equals(defaultNetworkInfo.BroadcastIP)))
_upnp = InternetGatewayDevice.Discover(defaultNetworkInfo.BroadcastIP, 30000);
}
catch
{
_upnpStatus = UPnPStatus.UPnPDeviceNotFound;
throw;
}
//find external ip from router
try
{
IPAddress externalIP = _upnp.GetExternalIPAddress();
if (!_externalSelfEP.Address.Equals(externalIP))
_externalSelfEP = new IPEndPoint(externalIP, _externalSelfEP.Port);
}
catch
{ }
int externalPort = LocalNetworkEP.Port;
bool isTCPMapped = false;
try
{
int loopCount = 0;
while (true)
{
PortMappingEntry portMap = _upnp.GetSpecificPortMappingEntry(ProtocolType.Tcp, externalPort);
if (portMap == null)
break; //port available
if (portMap.InternalEP.Equals(LocalNetworkEP))
{
//port already mapped with us
isTCPMapped = true;
_upnpStatus = UPnPStatus.PortForwarded;
break;
}
//find new port for mapping
if (externalPort < ushort.MaxValue)
externalPort++;
else
externalPort = 1024;
if (loopCount > ushort.MaxValue)
return;
loopCount++;
}
}
catch { }
if (!isTCPMapped)
{
try
{
_upnp.AddPortMapping(ProtocolType.Tcp, externalPort, LocalNetworkEP, "BitChat - TCP");
if (_externalSelfEP.Port != externalPort)
_externalSelfEP = new IPEndPoint(_externalSelfEP.Address, externalPort);
_upnpStatus = UPnPStatus.PortForwarded;
Debug.Write("BitChatClient.UPnPTimerCallback", "tcp port mapped " + externalPort);
}
catch
{
try
{
_upnp.DeletePortMapping(ProtocolType.Tcp, externalPort);
_upnp.AddPortMapping(ProtocolType.Tcp, externalPort, LocalNetworkEP, "BitChat - TCP");
if (_externalSelfEP.Port != externalPort)
_externalSelfEP = new IPEndPoint(_externalSelfEP.Address, externalPort);
_upnpStatus = UPnPStatus.PortForwarded;
Debug.Write("BitChat.UPnPTimerCallback", "tcp port mapped " + externalPort);
}
catch { }
}
}
}
catch (Exception ex)
{
Debug.Write("BitChat.UPnPTimerCallback", ex);
}
finally
{
if (_upnpTimer != null)
{
switch (_upnpStatus)
{
case Connections.UPnPStatus.UPnPDeviceNotFound:
_upnpTimer.Change(10000, Timeout.Infinite);
break;
default:
_upnpTimer.Change(UPNP_TIMER_INTERVAL, Timeout.Infinite);
break;
}
}
}
}
