Issue while using HttpClient with Il2cpp builds

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When I use System.Net.Http.HttpClient with Il2cpp build for android or ios I always get error for ParseQuery String but it works with mono

  Error: called non-existent method System.Collections.Specialized.NameValueCollection System.Web.HttpUtility::ParseQueryString(System.String)

I though it was related to assemblies stripping, so I added a rule to preserve System.Web assembly

     <assembly fullname="System.Web">
         <type fullname="System.Web.HttpRequest" perserve="all"/>
     </assembly>

But This didn't seem to work

Does anyone have an idea if it is a stripping issue or something related to System.Web dll itself? I appreciate your help

Answer 1

Answer by JoshPeterson · Aug 24, 2021 at 12:11 PM

It looks like the link.xml file you showed is preserving System.Web.HttpRequest, but the missing method is on System.Web.HttpUtility. Maybe try to add System.Web.HttpUtility to the link.xml file as well.

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AmrAutsera · Aug 24, 2021 at 03:28 PM 0

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I tried adding it but got the same result

 <assembly fullname="System.Web">
     <type fullname="System.Web.HttpRequest" perserve="all"/>
     <method signature="System.Collections.Specialized.NameValueCollection ParseQueryString(System.String)" />
 </assembly>

maybe unity has its own version of System.Web

JoshPeterson AmrAutsera · Aug 24, 2021 at 04:01 PM 0

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I don't believe that link.xml file will preserve the method you intend. Can you first attempt to keep all of HttpUtility:

 <assembly fullname="System.Web">
          <type fullname="System.Web.HttpRequest" perserve="all"/>
          <type fullname="System.Web.HttpUtility" perserve="all"/>
 </assembly>

AmrAutsera JoshPeterson · Aug 25, 2021 at 07:12 AM 0

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I changed the link file, but I got the same error. I appreciate your help, but it looks like I have to try a different approach that doesn't require System.Web.

Issue while using HttpClient with Il2cpp builds

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