string playerAddress = player.net.connection.ipaddress.Split(':')[0];​

which i saw on a old post on oxidemod.org thread but appears to cause a NullReferenceException

Pixel1001

oh, looks like that does work.
I thought the .Split was meant to remove the everything after and including the :

That is what it is for.

string playerAddress = player.net.connection.ipaddress;
string IPAddress = playerAddress.Substring(0, playerAddress.LastIndexOf(":"));​

and it seems to work just fine

Pixel1001

welp after some googling i just did

string playerAddress = player.net.connection.ipaddress;
string IPAddress = playerAddress.Substring(0, playerAddress.LastIndexOf(":"));​

and it seems to work just fine

That's another way of doing the same thing. Keep in mind that the BasePlayer has to be online with a valid connection, otherwise you will get that NRE; that's the only way you'd get an NRE otherwise. There's no real difference between the code in the first versus what you are using now.

 Failed to call hook 'admin' on plugin 'Aquatic v1.0.0' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Core.Configuration.DynamicConfigFile.Get (System.String[] path) [0x00011] in <b0a93b504f034a0db8b1c3d2503c0987>:0 
  at Oxide.Core.Configuration.DynamicConfigFile.get_Item (System.String keyLevel1, System.String keyLevel2, System.String keyLevel3) [0x00000] in <b0a93b504f034a0db8b1c3d2503c0987>:0 
  at Oxide.Plugins.Aquatic.admin (BasePlayer player, System.String command) [0x00056] in <3eb13466be2b4c759597b4c5528381e0>:0 
  at Oxide.Plugins.Aquatic.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x000ef] in <3eb13466be2b4c759597b4c5528381e0>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <33f7c42a56934dae8ec04b11017dce31>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <b0a93b504f034a0db8b1c3d2503c0987>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <b0a93b504f034a0db8b1c3d2503c0987>:0​

but now i cant even reproduce it which is making me so confused considering i only changed that

Pixel1001

i was getting

 Failed to call hook 'admin' on plugin 'Aquatic v1.0.0' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Core.Configuration.DynamicConfigFile.Get (System.String[] path) [0x00011] in <b0a93b504f034a0db8b1c3d2503c0987>:0 
  at Oxide.Core.Configuration.DynamicConfigFile.get_Item (System.String keyLevel1, System.String keyLevel2, System.String keyLevel3) [0x00000] in <b0a93b504f034a0db8b1c3d2503c0987>:0 
  at Oxide.Plugins.Aquatic.admin (BasePlayer player, System.String command) [0x00056] in <3eb13466be2b4c759597b4c5528381e0>:0 
  at Oxide.Plugins.Aquatic.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x000ef] in <3eb13466be2b4c759597b4c5528381e0>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <33f7c42a56934dae8ec04b11017dce31>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <b0a93b504f034a0db8b1c3d2503c0987>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <b0a93b504f034a0db8b1c3d2503c0987>:0​

but now i cant even reproduce it which is making me so confused considering i only changed that