public string ConfigureNatTraversal(IPAddress ownAddress, int internalPort)
{
var ip = _upnpDeviceProvider.GetExternalIp();
var allMappings = _upnpDeviceProvider.GetAllMappings();
var existingMapping = allMappings.SingleOrDefault(m => m.PrivatePort == internalPort && m.Description == _description);
if (existingMapping?.PrivateIP?.Equals(ownAddress) ?? false)
{
return($"{existingMapping.PublicIP}:{existingMapping.PublicPort}");
}
if (!existingMapping?.PrivateIP?.Equals(ownAddress) ?? false)
{
_logger.LogError($"The port {internalPort} is in use by another IP: {existingMapping.PrivateIP}");
throw new Exception($"The port {internalPort} is in use by another IP: {existingMapping.PrivateIP}");
}
for (var nextPort = 49151; nextPort < 65535; nextPort++)
{
if (allMappings.Any(m => m.PublicPort == nextPort && !m.PrivateIP.Equals(ownAddress)))
{
continue;
}
_upnpDeviceProvider.CreateMapping(internalPort, nextPort, _description);
return($"{ip}:{nextPort}");
}
_logger.LogError("No available ports found.");
throw new Exception("No available ports found.");
}
public string ConfigureNatTraversal(IPAddress ownAddress, int internalPort)
{
var ip = _upnpDeviceProvider.GetExternalIp();
var allMappings = _upnpDeviceProvider.GetAllMappings();
var existingMapping = allMappings.SingleOrDefault(m => m.PrivatePort == internalPort && m.Description == _description);
if (existingMapping?.PublicIP?.Equals(ownAddress) ?? false)
{
return($"{existingMapping.PublicIP}:{existingMapping.PublicPort}");
}
if (!existingMapping?.PrivateIP?.Equals(ownAddress) ?? false)
{
_logger.LogError($"The port {internalPort} is in use by another IP: {existingMapping.PrivateIP}");
throw new Exception($"The port {internalPort} is in use by another IP: {existingMapping.PrivateIP}");
}
_upnpDeviceProvider.CreateMapping(internalPort, _externalPort, _description);
return($"{ip}:{_externalPort}");
}
