I have a problem with link.xml

Unity Engine
,
1

It’s my link.xml info:

<linker>
  <assembly fullname="System">
    <type fullname="System.Net" preserve="all"/>
	<type fullname="System.Threading" preserve="all"/>
	<type fullname="System.Net.Sockets" preserve="all"/>
	<type fullname="System.IO" preserve="all"/>
	<type fullname="System.Text" preserve="all"/>
	<type fullname="System.Collections" preserve="all"/>
	<type fullname="System.Collections.Generic" preserve="all"/>
	<type fullname="System.Net.WebRequest" preserve="all"/>
	<type fullname="System.Configuration.ExeConfigurationHost" preserve="all"/>
	<type fullname="System.Configuration" preserve="all"/>
  </assembly>
</linker>

It’s the problem(for xcode throw):

Loading /var/mobile/Applications/5A35737D-ECB3-4C4E-9219-6E18D5D87D63/COD0506t2.app/Data/Managed/System.Data.dll 

into Unity Child Domain
- Completed reload, in  0.171 seconds
-> applicationDidBecomeActive()

Unhandled Exception: System.TypeInitializationException: An exception was thrown by the type initializer for 
System.Net.WebRequest ---> System.Configuration.ConfigurationErrorsException: Error Initializing the configuration system. ---> System.MissingMethodException: Method not found: 'Default constructor not found...ctor() of System.Configuration.ExeConfigurationHost'.
  at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) [0x00000] in <filename unknown>:0 
  at System.Activator.CreateInstance (System.Type type) [0x00000] in <filename unknown>:0 
  at System.Configuration.InternalConfigurationSystem.Init (System.Type typeConfigHost, System.Object[] hostInitParams) [0x00000] in <filename unknown>:0 
  at System.Configuration.InternalConfigurationFactory.Create (System.Type typeConfigHost, System.Object[] hostInitConfigurationParams) [0x00000] in <filename unknown>:0 
  at System.Configuration.ConfigurationManager.OpenExeConfigurationInternal (ConfigurationUserLevel userLevel, System.Reflection.Assembly calling_assembly, System.String exePath) [0x00000] in <filename unknown>:0 
  at System.Configuration.ClientConfigurationSystem.get_Configuration () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Configuration.ClientConfigurationSystem.get_Configuration () [0x00000] in <filename unknown>:0 
  at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection (System.String configKey) [0x00000] in <filenameunknown>:0 
  at System.Configuration.ConfigurationManager.GetSection (System.String sectionName) [0x00000] in <filename unknown>:0 
  at System.Net.WebRequest..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at Net.Http.HttpUtil.GetHttp (System.String httpUrl) [0x00000] in <filename unknown>:0 
  at Net.NetManager.ExecuteGetHttp () [0x00000] in <filename unknown>:0 
Clark
 
(Filename: /Applications/buildAgent/work/14194e8ce88cdf47/Runtime/ExportGenerated/iPhonePlayer-armv7/UnityEngineDebug.cpp Line: 43)

-> force accelerometer registration

The game I’m working on using several classes from the System.Net.Sockets package. If I run it on a normal build it works perfectly, but if I try to strip it using either StrippingLevel.StripAssemblies or StrippingLevel.StripByteCode stripping levels, it crashes with a*exception (above…).

But, why?

Additional Information:
1, I have implemented Http using System.Net.Sockets.
2, When I use my link.xml, the size of System.dll is increased (259kb).
3, When I only use [StrippingLevel.StripByteCode], the size of System.dll is small (252kb).
4, When I disable the [strip function], the size of System.dll is biggest (1.7m).

2

If I want to ignore all classes of System.dll , How can I do?
Because, I only need to strip my Assembly-CSharp.dll

en… Is this right?

<linker>
	<assembly fullname="System">
		<type fullname="System.*" preserve="all"/>
	</assembly>
	<assembly fullname="mscorlib">
		<namespace fullname="System.*" preserve="all"/>
	</assembly>
</linker>
3

Exactly the same issue, someone please help!

4
  1. Discover the name of the assembly for excluding
  • Build project for windows (or just looking for any dlls in project)
  • Got .NET SomeAssemblyBrowser (ILspy or something like this)
  • Open in SomeAssemblyBrowser suspected dll libraries (BuildFolder\Managed, BuildFolder\Plugins etc)
  • Figure out assembly name by searching for desired namespace

For example you found SomeAssemblyName and SomeNamespaceName within it.
2. Make the file Assets\link.xml:

<linker>
       <assembly fullname="SomeAssemblyName">
               <namespace fullname="SomeNamespaceName" preserve="all"/>
       </assembly>
</linker>
  1. Build project for iOS with this file, set strip level different values and verify that the corresponding BuildFolder/Libraries/SomeLibraryName.dll.s size is changing (also “Other/SystemExecutableAndDll” size in Profiler.Memory.Detailed Take Sample)
1 Like
5

I encountered the same problem when used HttpWebRequest.
Following link.xml helps:







But I don’t know what’s the reason and how to find the corrected type name, anybody can help?

6

Okay, a little help for those searching for some instructions on how this works. This is based on trial and error.

“type” can be either a class name (with full namespace) or just a namespace and every class within that namespace will be excluded.
Child namespaces will not be excluded just by adding the parent namespace. In order to exclude namespaces recursively, use *

<linker>
   <assembly fullname="MyAssemblyName"> // the name of the assembly
       <type fullname="MyNamespace" preserve="all"/> // excludes all classes that are direct children of MyNamespace
       <type fullname="MyNamespace.*" preserve="all"/> // excludes all namespaces and classes recursively under MyNamespace
       <type fullname="MyNamespace*" preserve="all"/> // excludes all namespaces and classes recursively under MyNamespace. Would also exclude the namespace MyNamespaceABC
       <type fullname="My*" preserve="all"/> // excludes all namespaces and classes that start with My and all children of those namespaces
       <type fullname="*" preserve="all"/> // excludes all namespaces and classes in the assembly
   </assembly>
</linker>

Essentially, it seems to be just a simple string comparison.

Also, using the namespace element also works. I haven’t tested this but I assume it excludes everything within that namespace. Not sure about child namespaces within the parent.

<linker>
   <assembly fullname="MyAssemblyName">
       <namespace fullname="MyNamespace" preserve="all"/>
   </assembly>
</linker>
3 Likes