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dotnet remoting
group:Using remoting features inside a .NET applet loaded in a tag object
dotnet remoting:
applet loaded into a tag object inside an HTML page ? <OBJECT id="myID" height="150" width="300" classid="http:applet.dll#test.applet"> </OBJECT> If not please can anyone explain why ? I think yes and so I'd written a small example immediately I've met a problem. I'm using .NET Framework v. 1.1.4322 and it's the only version installed both client side and server side. My test applet is correctly loaded into IE client but when I try to setting programmatically the remoting I aways obtain a SecurityException even if the assembly is strong name signed and client side fully trusted. The exception is the following: System.Security.SecurityException: Request for the permission of type System.Security.Permissions.SecurityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed. at System.Security.CodeAccessSecurityEngine.CheckTokenBasedSetHelper(Boolean ignoreGrants, TokenBasedSet grants, TokenBasedSet denied, TokenBasedSet demands) at System.Security.CodeAccessSecurityEngine.CheckSetHelper(PermissionSet grants, PermissionSet denied, PermissionSet demands) at System.Runtime.Remoting.Channels.ChannelServices.RegisterChannel(IChannel chnl) at test.applet.Check() Could anyone help me please ? Best regards
Hi,
..NET controls, when loaded inside IE, are given pretty restricted security permissions. In particular, they are not allowed to access the network. You can change this permission set by using the .NET Framework configuration tools, but this will have to be done on every machine where your code is going to be used. Consider using an AJAX-like approach when JavaScript code on the page uses the XMLHttpRequest object to talk to the server and then feeds the received data to the .NET object hosted within the OBJECT tag. -- Regards, Dmytro Lapshyn [MVP] http://blogs.vbcity.com/DmytroL [quoted text, click to view] "Lambuz" <lambu76@gmail.com> wrote in message
news:1158846076.053930.44260@d34g2000cwd.googlegroups.com... > First of all, is it possible usign .NET remoting feature inside a .NET > applet loaded into a tag object inside an HTML page ? > > <OBJECT id="myID" height="150" width="300" > classid="http:applet.dll#test.applet"> </OBJECT> > > If not please can anyone explain why ? > > I think yes and so I'd written a small example immediately I've met a > problem. > > I'm using .NET Framework v. 1.1.4322 and it's the only version > installed both client side and server side. > > My test applet is correctly loaded into IE client but when I try to > setting programmatically the remoting I aways obtain a > SecurityException even if the assembly is strong name signed and client > side fully trusted. > > The exception is the following: > System.Security.SecurityException: Request for the permission of type > System.Security.Permissions.SecurityPermission, mscorlib, > Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 > failed. > at > System.Security.CodeAccessSecurityEngine.CheckTokenBasedSetHelper(Boolean > ignoreGrants, TokenBasedSet grants, TokenBasedSet denied, TokenBasedSet > demands) > at > System.Security.CodeAccessSecurityEngine.CheckSetHelper(PermissionSet > grants, PermissionSet denied, PermissionSet demands) > at > System.Runtime.Remoting.Channels.ChannelServices.RegisterChannel(IChannel > chnl) at test.applet.Check() > > Could anyone help me please ? > > Best regards >
[quoted text, click to view]
> .NET controls, when loaded inside IE, are given pretty restricted security > permissions. In particular, they are not allowed to access the network. You > can change this permission set by using the .NET Framework configuration > tools, but this will have to be done on every machine where your code is > going to be used. While I was waiting an answer from somebody I've solved my problem, but now I've got another one. The code I'm using is the following: PermissionSet ps = new PermissionSet(PermissionState.None); ps.AddPermission(new SecurityPermission(PermissionState.Unrestricted)); ps.AddPermission(new SocketPermission(PermissionState.Unrestricted)); ps.Assert(); TcpClientChannel _channel = new TcpClientChannel(); ChannelServices.RegisterChannel(_channel); RemotingConfiguration.RegisterActivatedClientType(typeof(DataProvider),"tcp://localhost:8081"); //DataProvider dp = (DataProvider) (Activator.CreateInstance(typeof(DataProvider))); DataProvider dp = new DataProvider(); As you can see even if my assembly is strong name signed and fully trusted by strong nome reference I must create to permission and it's very strange for me...can you explain to me ? My real problem is that if I create my remote object by Activatar object I always obtain the following exception: System.Security.SecurityException: Request failed. at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly) at System.Activator.CreateInstance(Type type, Boolean nonPublic) at System.Activator.CreateInstance(Type type) at IBM.Cipros.Refinery.CPRSWebClient.Check() The granted set of the failing assembly was: <PermissionSet class="System.Security.PermissionSet" version="1"> <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="USERNAME"/> <IPermission class="System.Security.Permissions.FileDialogPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Security.Permissions.IsolatedStorageFilePermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Allowed="AssemblyIsolationByUser" UserQuota="9223372036854775807" Expiry="9223372036854775807" Permanent="True"/> <IPermission class="System.Security.Permissions.ReflectionPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="ReflectionEmit"/> <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="Assertion, Execution, BindingRedirects"/> <IPermission class="System.Security.Permissions.UIPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Net.DnsPermission, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Drawing.Printing.PrintingPermission, System.Drawing, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" version="1" Level="DefaultPrinting"/> <IPermission class="System.Diagnostics.EventLogPermission, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <Machine name="." access="Instrument"/> </IPermission> <IPermission class="System.Net.WebPermission, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <ConnectAccess> <URI uri="(https|http)://localhost/.*"/> </ConnectAccess> </IPermission> <IPermission class="System.Security.Permissions.SiteIdentityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Site="localhost"/> <IPermission class="System.Security.Permissions.UrlIdentityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Url="http://localhost/"/> <IPermission class="System.Security.Permissions.ZoneIdentityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Zone="Intranet"/> </PermissionSet> If I use directly the contructor of my remote object it takes a couple of minute to create it, it is very strange because if I use the prevoius code inside a console application the remote creation is very quickly, quite immediat. Do you know the reason ? [quoted text, click to view] > > Consider using an AJAX-like approach when JavaScript code on the page uses > the XMLHttpRequest object to talk to the server and then feeds the received > data to the .NET object hosted within the OBJECT tag. > it is already the first alternative if my initial solution is impossible to realize.
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