I'm probably missing something simple, but I was wondering if anyone has
come across something like this in their own endeavors....
I have a Windows Service (named FileRequestService) that hosts a remotable
class (FileRequest) from another assembly (ECCFileRequest). The Windows
Service assembly name is ECCSIRequest, the class library with the remotable
class is in an assembly named ECCFileRequest just to clarify. For some
reason, I when I try to load remoting configuration (as in the code below),
my clients cannot connect to the service:
string cfg = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory,
"ECCSIRequest.exe.config");
RemotingConfiguration.Configure(cfg);
However, if I programatically set the channel and use
RegisterWellKnownServiceType (as in the following code), the clients can
successfully connect. Again, I'm sure I'm missing something simple as far as
defining the appropriate names or TCP "URL", but I'm just not seeing what it
is. Here's the code that will work:
_tcp = new TcpChannel(999); ChannelServices.RegisterChannel(_tcp);
RemotingConfiguration.RegisterWellKnownServiceType(typeof(ECCFileRequest.Fil
eRequest),
"FileRequest",
WellKnownObjectMode.SingleCall);
I'm not sure what I'm missing. Any ideas?
I included more detailed info (config files for client and server, and some
code) below if anyone is up for taking a look. Thanks!
The config file (ECCSIRequest.exe.config) for the Windows Service looks like
this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.runtime.remoting>
<application name="FileRequest">
<service>
<wellknown mode="SingleCall" type="FileReqest, ECCFileRequest"
objectUri="FileRequest" />
</service>
<channels>
<channel ref="tcp" port="999">
<clientProviders>
<formatter ref="binary" />
</clientProviders>
<serverProviders>
<formatter ref="binary" />
</serverProviders>
</channel>
</channels>
</application>
</system.runtime.remoting>
</configuration>
The test client code looks like this:
RemotingConfiguration.Configure("ConsoleApplication17.exe.config");
ECCFileRequest.FileRequest fReq = (FileRequest)
RemotingServices.Connect(typeof(FileRequest),
ConfigurationSettings.AppSettings["RequestURL"]);
Console.WriteLine(fReq.GetXMLFileList(@"somefile.txt"));
The test client config file looks like this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="RequestURL" value="tcp://localhost:999/FileRequest"/>
</appSettings>
<system.runtime.remoting>
<application name="ConsoleApplication17">
<channels>
<channel ref="tcp" port="0">
<clientProviders>
<formatter ref="binary" />
</clientProviders>
<serverProviders>
<formatter ref="binary" />
</serverProviders>
</channel>
</channels>
</application>
</system.runtime.remoting>
</configuration>
The exception being thrown is:
Cannot load type FileReqest, ECCFileRequest.
Server stack trace:
at System.Runtime.Remoting.RemotingConfigInfo.LoadType(String typeName,
Strin g assemblyName)
at
System.Runtime.Remoting.RemotingConfigInfo.StartupWellKnownObject(String a
smName, String svrTypeName, String URI, WellKnownObjectMode mode, Boolean
fRepla
ce)
at
System.Runtime.Remoting.RemotingConfigInfo.StartupWellKnownObject(String U
RI)
at
System.Runtime.Remoting.RemotingConfigHandler.CreateWellKnownObject(String
uri)
at System.Runtime.Remoting.IdentityHolder.CasualResolveIdentity(String
uri)
at System.Runtime.Remoting.Messaging.MethodCall.ResolveType()
at System.Runtime.Remoting.Messaging.MethodCall.ResolveMethod(Boolean
bThrowI
fNotResolved)
at System.Runtime.Remoting.Messaging.MethodCall..ctor(Object
handlerObject, B inaryMethodCallMessage smuggledMsg)
at
System.Runtime.Serialization.Formatters.Binary.BinaryMethodCall.ReadArray(
Object[] callA, Object handlerObject)
at
System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(He
aderHandler handler, __BinaryParser serParser, Boolean fCheck,
IMethodCallMessag e methodCallMessage)
at
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize
(Stream serializationStream, HeaderHandler handler, Boolean fCheck,
IMethodCallM essage methodCallMessage)
at
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize
(Stream serializationStream, HeaderHandler handler)
at
System.Runtime.Remoting.Channels.CoreChannel.DeserializeBinaryRequestMessa
ge(String objectUri, Stream inputStream, Boolean bStrictBinding)
at
System.Runtime.Remoting.Channels.BinaryServerFormatterSink.ProcessMessage(
IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders
reques tHeaders, Stream requestStream, IMessage& responseMsg,
ITransportHeaders& respon seHeaders, Stream& responseStream)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage
req Msg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&
msgDa ta, Int32 type)
at ECCFileRequest.FileRequest.GetXMLFileList(String directory) in
c:\document s and settings\zb5897\my documents\visual studio
projects\eccfilerequest\filereq uest.cs:line 73
at ConsoleApplication17.Class1.Main(String[] args) in c:\documents and
settin gs\zb5897\my documents\visual studio
projects\consoleapplication17\class1.cs:lin
e 31
