<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle21
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#993366;}
span.EmailStyle22
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle23
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#003300;}
span.EmailStyle24
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D">The C# wrapper could be as simple as:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">public static class MyWrapper {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> public static void IServerInterfaceMethod(object o) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> ((IServerInterface)o).IServerInterfaceMethod();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Used like:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">MyWrapper.IServerInterfaceMethod(TransparentProxy)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">If you just want to call all static methods, or you can make an instance wrapper:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">public class MyWrapper {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> private readonly IServerInterface _wrapped;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> public MyWrapper(object wrapped) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> _wrapped = (IServerInterface)wrapped;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> public void IServerInterfaceMethod(object o) {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span style="color:#1F497D">_wrapped.IServerInterfaceMethod();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Used like:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">MyWrapper(TransparentProxy).IServerInterfaceMethod()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Then you can pass around the wrapper object and just use it like a normal object. If you need to get back to the transparent proxy for some reason you could add a property which returns it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Muyal,Tsahi [mailto:Tsahi.Muyal@kla-tencor.com]
<br>
<b>Sent:</b> Tuesday, October 11, 2011 3:01 PM<br>
<b>To:</b> Dino Viehland<br>
<b>Cc:</b> ironpython-users@python.org<br>
<b>Subject:</b> RE: .NET Remoting and Interface based objects<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#003300">The </span><span style="font-size:9.5pt;font-family:Consolas">clr.Convert(TransparentProxy, IServerInterface)</span><span style="color:#003300"> is failing with same exception<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#003300">I will code a C# wrapper but what does it mean? A client side assembly that will get the transparent proxy and convert it to the Interface type I need?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#003300"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#003300">Tsahi Muyal<br>
Corporate Platform Group(CPG)<br>
KLA-Tencor Israel<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#003300"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Dino Viehland [mailto:dinov@microsoft.com]
<br>
<b>Sent:</b> Tuesday, October 11, 2011 11:46 PM<br>
<b>To:</b> Muyal,Tsahi<br>
<b>Cc:</b> ironpython-users@python.org<br>
<b>Subject:</b> RE: .NET Remoting and Interface based objects<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hurm, maybe this is a different problem then… Does:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">import clr<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">clr.Convert(TransparentProxy, IServerInterface).IServerInterfaceMethod()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">work?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">If not then my guess is you might need a C# wrapper
</span><span style="font-family:Wingdings;color:#1F497D">L</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Muyal,Tsahi [mailto:Tsahi.Muyal@kla-tencor.com]
<br>
<b>Sent:</b> Tuesday, October 11, 2011 2:39 PM<br>
<b>To:</b> Dino Viehland<br>
<b>Cc:</b> ironpython-users@python.org<br>
<b>Subject:</b> RE: .NET Remoting and Interface based objects<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366">I tried using typedproxy class<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366">Not sure I am using it the right way<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366">This is what I did<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">test = typedproxy(TransparentProxy, IServerInterface)</span><span style="color:#993366"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">test.IServerInterfaceMethod()<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366">This call is failing with “Expected IServerInterface, got MarshalByRefObject”<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366">I debugged the code to find out where it is failing, it is in typedproxy (I marked the line)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">class</span><span style="font-size:9.5pt;font-family:Consolas"> typedproxy(object):<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> __slots__ = [<span style="color:#A31515">'obj'</span>,
<span style="color:#A31515">'proxyType'</span>]<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:blue">def</span> __init__(self, obj, proxyType):<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> self<span style="color:blue">.</span>proxyType = proxyType<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> self<span style="color:blue">.</span>obj = obj<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:blue">def</span> __getattribute__(self, attr):<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> proxyType = object<span style="color:blue">.</span>__getattribute__(self,
<span style="color:#A31515">'proxyType'</span>)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> obj = object<span style="color:blue">.</span>__getattribute__(self,
<span style="color:#A31515">'obj'</span>)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> att = getattr(proxyType, attr)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> att2 = att<span style="color:blue">.</span>__get__(obj, proxyType)
</span><b><span style="color:#993366">#This line is throwing the exception</span></b><span style="font-size:9.5pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:blue">return</span> att2<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366">Any idea?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="color:#993366">Thank you very much;<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#993366">Tsahi Muyal<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#993366"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Dino Viehland [mailto:dinov@microsoft.com]
<br>
<b>Sent:</b> Tuesday, October 11, 2011 10:58 PM<br>
<b>To:</b> Muyal,Tsahi; ironpython-users@python.org<br>
<b>Subject:</b> RE: .NET Remoting and Interface based objects<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">I’m not quite certain this is the same issue but you should try using the wrapper from this thread:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="http://lists.ironpython.com/pipermail/users-ironpython.com/2006-September/003549.html">http://lists.ironpython.com/pipermail/users-ironpython.com/2006-September/003549.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The transparent proxies always succeed when casting them to an interface type so it’s hard for us to work w/ the objects when we need to check for certain interfaces ourselves.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ironpython-users-bounces+dinov=microsoft.com@python.org [mailto:ironpython-users-bounces+dinov=microsoft.com@python.org]
<b>On Behalf Of </b>Muyal,Tsahi<br>
<b>Sent:</b> Tuesday, October 11, 2011 9:13 AM<br>
<b>To:</b> ironpython-users@python.org<br>
<b>Subject:</b> [Ironpython-users] .NET Remoting and Interface based objects<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">I am trying to call our .NET service via remoting using IronPython<o:p></o:p></p>
<p class="MsoNormal">I have the transparent proxy object but I don’t know how to cast it to the interfaces (that are implemented by the server side object)
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I tried <b>IServerInterface</b>.SomeMethod(transparent-proxy-object) but it is failing with “expected
<b><i>IServerInterface</i></b>, got MarshalByRefObject”<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">How can I cast it to an interface?<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">I am using 2.7<span style="font-size:9.5pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance,<o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Tsahi Muyal<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>