Edge: Referencing external 3rd party DLL

[carlskii]

Hi,

I having problems referencing a external DLL from edge. I've added the DLL to the .NET GAL but I still cannot reference from within edge.

var edge = require('edge');

var hello = edge.func(function () {/*

 var listCertificates = edge.func(function() {/*
 #r "System.dll"
 #r "BouncyCastle.Crypto.dll"

 using Org.BouncyCastle.Pkcs;
 using Org.BouncyCastle.Asn1.X509;
 using Org.BouncyCastle.Crypto.Generators;
 using Org.BouncyCastle.Crypto;
 using Org.BouncyCastle.Security;
 using Org.BouncyCastle.OpenSsl;
 using System.Text;
 using System.IO;

 async (data) =>
 {

 //Requested Certificate Name
 X509Name name = new X509Name("CN=Client Cert, C=NL");

 */});

This is the error!

Uncaught System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidOperationException: Unable to compile C# code.
----> Errors when compiling as a CLR library:
error CS0006: Metadata file 'BouncyCastle.Crypto.dll' could not be found
----> Errors when compiling as a CLR async lambda expression:
error CS0006: Metadata file 'BouncyCastle.Crypto.dll' could not be found
   at EdgeCompiler.CompileFunc(IDictionary`2 parameters)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at ClrFunc.Initialize(Handle<v8::Value>* , Arguments* args) in c:\edge-master-2\edge-master\src\clrfunc.cpp:line 91 

[tjanczuk]

You mean you added it to GAC, not GAL, right? What is the output of gacutil -l BouncyCastle.Crypto?

[carlskii]

Yes sorry GAC! Output from gacutil -l BouncyCastle.Crypto is:

C:\GACkey>gacutil -l BouncyCastle.Crypto
Microsoft (R) .NET Global Assembly Cache Utility.  Version 4.0.30319.17626
Copyright (c) Microsoft Corporation.  All rights reserved.

The Global Assembly Cache contains the following assemblies:
  BouncyCastle.Crypto, Version=1.7.4114.6375, Culture=neutral, PublicKeyToken=aa
5196b1909f504b, processorArchitecture=MSIL

Number of items = 1

[carlskii]

Is there anything Im missing here?

[tjanczuk]

Nothing jumps at me. Can you try creating a simple Hello, world C# app and compile it from command line while referencing this dll?

csc.exe /r BouncyCastle.Crypto.dll hello.cs

[carlskii]

OK So I deleted the BouncyCastle.Crypto.dll from the GAC then created a simple Hello, world C# app, I copied the BouncyCastle.Crypto.dll into the same directory as the hello.cs file then did this:

csc.exe /reference:BouncyCastle.Crypto.dll Program.cs

It compiled OK and the produces a .exe which ran OK and it referenced the BouncyCastle.Crypto.dll as I expected.

I then copied the BouncyCastle.Crypto.dll into the my node-webkit folder and ran my node-webkit/edge app and it worked.

So, should I not be able to specifically reference the location of the BouncyCastle.Crypto.dll like I do on the command line? If so where should I put them to make them accessible to my node-webkit/node.js/edge app?

[tjanczuk]

Try in the same directory as the node.exe running your app.

[carlskii]

Yes - as per my previous comment this works.

The question is, is it possible to reference the file from a "lib" directory ?

[tjanczuk]

The #r should accept a fully qualified file name. Alternatively, you can also specify reference assembles using this syntax:

var mycsharpcode = function () {/*
   .... the C# goes here
*/};

var myfunc = edge.func({
    source: mycsharpcode,
    references: [ 'c:\\mydirectory\\BouncyCaste.dll' ]
});

The full reference file system location can be computed using __dirname.

[AbelLai]

@tjanczuk , I did as you said:

var path = "C:\\Program Files\\nodejs";
var test = edge.func({ 
    assemblyFile: "APITest.dll", 
    typeName: "APITest.Startup", 
    methodName: "Invoke", 
    references: [
        (path + "\\dll\\MyApp.Entity.dll")
    ] 
}); 

The dll folder is in the same directory as node.exe.

It also throw the error when call function test: ...Could not load file or assembly 'MyApp.Entity ...

It is ok if MyApp.Entity.dll is in the same directory as node.exe. But, it is not very nice.

[tjanczuk]

Which version of edge and edge-cs are you using? Edge 0.7.12 and edge-cs 0.2.4 make this scenario work after fixing https://github.com/tjanczuk/edge-cs/commit/7b510b3b3d5bcac3f225c6be49cfc61c1ec1a1aa.

---

From: Abel [[email protected]]
Sent: Friday, July 05, 2013 1:39 AM
To: tjanczuk/edge
Cc: Tomasz Janczuk
Subject: Re: [edge] Referencing external 3rd party DLL (#62)

@tjanczukhttps://github.com/tjanczuk , I did as you said:

var path = "C:\Program Files\nodejs";
var test = edge.func({
assemblyFile: "APITest.dll",
typeName: "APITest.Startup",
methodName: "Invoke",
references: [
(path + "\dllMyApp.Entity.dll")
]
});

The dll folder is in the same directory as node.exe.

It also throw the error when call function test: ...Could not load file or assembly 'MyApp.Entity ...

It is ok if MyApp.Entity.dll is in the same directory as node.exe. But, it is not very nice.

—
Reply to this email directly or view it on GitHubhttps://github.com/tjanczuk/edge/issues/62#issuecomment-20506918.

[AbelLai]

@tjanczuk , sorry about that. It was my mistake. My dll MyApp.Entity.dll had a mapping file. They should be under the folder bin in .NET project. So, using edge.js, it should under the folder NodeJS next to node.exe.

[shivasurya]

Im too getting same error pls someone help

var edge = require('edge');

var helloWorld = edge.func({assemblyFile:'MR6100Api.dll',typeName:'MR6100Api.MR6100Api',
    methodName: 'isNetWorkConnect',
    references: [
        ("C:\\Users\\killer\\Documents\\hello\\sample\\MR6100Api.dll")
    ] 
});

helloWorld('127.0.0.1', function (error, result) {
    if (error) throw error;
    console.log(result);
});

Exception

    return edge.initializeClrFunc(options);
                ^
Error: Could not load file or assembly 'file:///C:\Users\killer\Documents\hello\sample\MR6100Api
.dll' or one of its dependencies. An attempt was made to load a program with an incorrect format.
    at Error (native)
    at Object.exports.func (C:\Users\killer\Documents\hello\sample\node_modules\edge\lib\edge.js
:154:17)
    at Object.<anonymous> (C:\Users\killer\Documents\hello\sample\server.js:3:23)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3

please help me out

[tsiddikee]

I have done strong name snk for the dll and then added the dll to GAC. It worked perfect.
I have also added the dll to nodejs exe directory.
So far did follow your instruction ebove. It did not work.
Would be nice if you would create a documentation more clearer than fragmented information.
I saw your first page documentation in github, which does not cover external dll integration.
It would be a big help if you would explain step by step how to work with external dll and c# code from associated dll.