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WebSharperAdapter.ToWebPart crashes if a unmanages DLL is in the binary dir
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We uses a unmanaged dll in a WebSharper project (libzmq.dll from fszmq package). The following code crashes preventing web server to start:

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startWebServer
    { defaultConfig with bindings = [ HttpBinding.mk HTTP (IPAddress.Any) 8083us ] }
    (WebSharperAdapter.ToWebPart(
        app = main, 
        RootDirectory = Path.GetFullPath @"_PublishedWebsites\Monitor.Web"))

The exception:

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at Mono.Cecil.PE.ImageReader.ReadOptionalHeaders(UInt16& subsystem, UInt16& dll_characteristics)
   at Mono.Cecil.PE.ImageReader.ReadImage()
   at Mono.Cecil.PE.ImageReader.ReadImageFrom(Stream stream)
   at Mono.Cecil.ModuleDefinition.ReadModule(Stream stream, ReaderParameters parameters)
   at Mono.Cecil.ModuleDefinition.ReadModule(String fileName, ReaderParameters parameters)
   at WebSharper.Core.Metadata.AssemblyInfo.Load(String path)
   at Microsoft.FSharp.Collections.IEnumerator.choose@202.System-Collections-IEnumerator-MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at Microsoft.FSharp.Collections.SeqModule.ToArray[T](IEnumerable`1 source)
   at WebSharper.Core.Metadata.Info.Create(IEnumerable`1 infos)
   at WebSharper.Owin.Options.Create(String webRoot, FSharpOption`1 binDirectory)
   at WebSharper.Suave.WebSharperAdapter.ToWebPart[a](Sitelet`1 app, FSharpOption`1 RootDirectory, FSharpOption`1 BinDirectory, FSharpOption`1 RequestPathBase)
   at <StartupCode$Monitor-Web>.$Main.main@() in E:\hg\klsrl.core\Source\Monitor.Web\Main.fs:line 76

I think inspecting each dll should be wrapped in a try..with block and exceptions should be either swallowed or be written to std out (or whenever to be visible in msbuild output).

.

Indeed, I can reproduce the issue and the solution you propose is the right one. Here is the ticket for this issue.

By on 12/18/2015 10:39 AM ()

Thanks! NuGet package update is very much appriciated :)

By on 12/18/2015 10:45 AM ()

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