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Question by eleonora_unity · Nov 06, 2018 at 12:59 PM · networkingdllexceptiondllnotfoundexceptionlibraries

System.EntryPointNotFoundException: CreateNLSocket

Hello guys, I hope you can help me with it. I'm trying to use a library in Unity for MDns. It's called Tmds.MDns. But when I use their StartBrowsing method to find servers I get this exception:

 System.EntryPointNotFoundException: CreateNLSocket
   at (wrapper managed-to-native) System.Net.NetworkInformation.LinuxNetworkChange.CreateNLSocket()
   at System.Net.NetworkInformation.LinuxNetworkChange.EnsureSocket () [0x00021] in <3acaa45225a54f778710ee6eff26f77f>:0 
   at System.Net.NetworkInformation.LinuxNetworkChange.Register (System.Net.NetworkInformation.NetworkAddressChangedEventHandler d) [0x00000] in <3acaa45225a54f778710ee6eff26f77f>:0 
   at System.Net.NetworkInformation.LinuxNetworkChange.add_NetworkAddressChanged (System.Net.NetworkInformation.NetworkAddressChangedEventHandler value) [0x00000] in <3acaa45225a54f778710ee6eff26f77f>:0 
   at System.Net.NetworkInformation.NetworkChange.add_NetworkAddressChanged (System.Net.NetworkInformation.NetworkAddressChangedEventHandler value) [0x00021] in <3acaa45225a54f778710ee6eff26f77f>:0 
   at Tmds.MDns.ServiceBrowser.StartBrowsing (System.Threading.SynchronizationContext synchronizationContext) [0x0005c] in C:\Users\EleonoraSeu\Desktop\MyProject\Assets\_Script\Packages\sila_library\src\discovery\Tmds.MDns\ServiceBrowser.cs:223 
   at Tmds.MDns.ServiceBrowser.StartBrowse (System.Collections.Generic.IEnumerable`1[T] serviceTypes, System.Threading.SynchronizationContext synchronizationContext) [0x00026] in C:\Users\EleonoraSeu\Desktop\MyProject\Assets\_Script\Packages\sila_library\src\discovery\Tmds.MDns\ServiceBrowser.cs:45 
   at Tmds.MDns.ServiceBrowser.StartBrowse (System.Collections.Generic.IEnumerable`1[T] serviceTypes, System.Boolean useSynchronizationContext) [0x0000f] in C:\Users\EleonoraSeu\Desktop\MyProject\Assets\_Script\Packages\sila_library\src\discovery\Tmds.MDns\ServiceBrowser.cs:74 
   at Tmds.MDns.ServiceBrowser.StartBrowse (System.String serviceType, System.Boolean useSynchronizationContext) [0x0000d] in 

It's a bit weird cause it doesn't work even if the servers are running in the same computer and I'm using windows, so I don't know why it's using NetworkInformation.LinuxNetworkChange Thanks in advance

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avatar image TreyH · Nov 06, 2018 at 04:28 PM 0
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This doesn't seem related to Unity, does it work outside of Unity like a blank WPF project or some other C# codebase?

avatar image TreyH · Nov 06, 2018 at 04:29 PM 0
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It's worth noting though that System.Net isn't going to behave nicely outside of desktop systems.

avatar image eleonora_unity · Nov 06, 2018 at 04:54 PM 0
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@TreyH yes, it works perfectly outside Unity. And at the moment I'm not planning to use any other platforms.

avatar image UlyssesWu · Nov 19, 2018 at 12:22 PM 0
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Same here, happens when using NetworkChange.NetworkAddressChanged event.

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Answer by cobaltmedia · Apr 29, 2019 at 11:55 PM

@eleonora_unity Did you ever find out how to get this to work? I'm having the same issue, it works under OSX, but not under Windows or iOS.

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