hubFS: THE place for F#

Hello all,

I am experimenting with F# and Asp.Net and the host I try it with claims that our sites run under Medium Trust with ReflectionPermissions added (among a few other additions) but whatever I do I get a SecurityException from System.Type.GetType - during initialization of the buildmanager(s)...

I have configured f# to use the FSharpCodeProvider in FSharp.Compiler.CodeDom.dll.

My hosting company also claims that assemblies without the AllowPartiallyTrustedCallersAttribute are not allowed which I guess is my actual problem since neither FSharp.Core.dll or FSharp.Compiler.CodeDom.dll has that attribute.

Running the site locally works fine with the two assemblies FSharp.Core.dll and FSharp.Compiler.CodeDom.dll in the Bin directory...

Has anyone been able to run a F# website on a host under similar conditions under Medium Trust?

Regards,
Johan Kullbom

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Johan Kullbom
http://blog.hoomla.se

Hi,

This is likely to be because of the use of CodeDom.dll, which requires fsc.exe be installed on the target machine, and which will no doubt require some higher level of priveleges.

If you are building a production system, our current recommendation based on the CTP bits is to use a C# presentation layer (e.g. a C# web app) with an F# code-behind DLL for your application logic.

Thanks

Don

 

Don,

Thanks for the reply.

I'll use a C#-web app as you suggest for now (even though the dependency of fsc.exe seems a bit strange to me).

Regards,
Johan Kullbom

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Johan Kullbom
http://blog.hoomla.se

Followup:

I'm now using a C# web application without code-behind files where the aspx-pages "Inherits" from types defined in a referrenced F#-assembly.

The referrenced F#-assembly is compiled using "--staticlink FSharp.Core" (under "Project Properties" -> "Build" -> "Other flags").

I had to manually add references to quite a few framework assemblies (including "Microsoft.VisualC" ??) but once done my site runs fine.

The site is now plain F# and hosted in a (shared and cheap) Medium Trust environment.

I am not able to use any inline F# on the pages - will have to use C# for that - but since I never liked that anyway that is not a problem...

(So far) I much prefer this sollution to using C# in code-behind ...

Regards,
Johan Kullbom

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Johan Kullbom
http://blog.hoomla.se

Thanks for the follow up, sounds great! Just out of interest, what's the site?

Cheers,
Rob

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Robert Pickering, MVP
http://strangelights.com

Robert,

The site is not public yet but I make sure to post a reference to it here when it becomes so ...

Regards,

Johan

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Johan Kullbom
http://blog.hoomla.se