Migrating from. NET Remoting to WCFThis article describes how to migrate an application that uses. NET Remoting to use Windows Communication Foundation WCF. It compares similar concepts between these products and then describes how to accomplish several common Remoting scenarios in WCF. NET Remoting is a legacy product that is supported only for backward compatibility. It is not secure across mixed trust environments because it cannot maintain the separate trust levels between client and server. For example, you should never expose a. NET Remoting endpoint to the Internet or to untrusted clients. We recommend existing Remoting applications be migrated to newer and more secure technologies. If the applications design uses only HTTP and is RESTful, we recommend ASP. Oracle Technology Network is the ultimate, complete, and authoritative source of technical information and learning about Java. In this article, I will show you how to load an icon of a Form programmatically. The. NET API Reference documentation has a new home. Visit the. NET API Browser on docs. microsoft. com to see the new experience. Contains methods to create types of. When looking for User Mode Code Integrity UMCI bypasses in the context of Device Guard, my typical approach has been to hunt for Microsoftsigned PowerShell scripts. NET Web API. For more information, see ASP. NET Web API. If the application is based on SOAP or requires non Http protocols such as TCP, we recommend WCF. Comparing. NET Remoting to WCF This section compares the basic building blocks of. NET Remoting with their WCF equivalents. We will use these building blocks later to create some common client server scenarios in WCF. The following chart summarizes the main similarities and differences between. NET Remoting and WCF. NET Remoting. WCFServer type. Subclass Marshal. By. Ref. Object. Mark with Service. Contract attribute. Service operations. Public methods on server type. Mark with Operation. Contract attribute. Serialization. ISerializable or SerializableData. Contract. Serializer or Xml. Serializer. Objects passed. By value or by reference. By value only. Errorsexceptions. Any serializable exception. Fault. Contractlt TDetail Client proxy objects. Strongly typed transparent proxies are created automatically from Marshal. By. Ref. Objects. Strongly typed proxies are generated on demand using Channel. Factorylt TChannel Platform required. Both client and server must use Microsoft OS and. NETCross platform. Message format. Private. Industry standards SOAP, WS, etc. Server Implementation Comparison. Creating a Server in. NET Remoting. NET Remoting server types must derive from Marshal. By. Ref. Object and define methods the client can call, like the following public class Remoting. Server Marshal. By. Ref. Object. public Customer Get. Customerint customer. Id. The public methods of this server type become the public contract available to clients. There is no separation between the servers public interface and its implementation one type handles both. Once the server type has been defined, it can be made available to clients, like in the following example Tcp. Channel channel new Tcp. Channel8. 08. 0. Channel. Services. Register. Channelchannel, ensure. Security true. Remoting. Configuration. Register. Well. Known. Service. Type. typeofRemoting. Server. Remoting. Server. Well. Known. Object. Mode. Singleton. Console. Write. LineRemoting. Server is running. Press ENTER to terminate. Console. Read. Line. There are many ways to make the Remoting type available as a server, including using configuration files. This is just one example. Creating a Server in WCF The equivalent step in WCF involves creating two types the public service contract and the concrete implementation. The first is declared as an interface marked with Service. Contract. Methods available to clients are marked with Operation. Contract Service. Contract. public interface IWCFServer. Operation. Contract. Customer Get. Customerint customer. Id. The servers implementation is defined in a separate concrete class, like in the following example public class WCFServer IWCFServer. Customer Get. Customerint customer. Id. Once these types have been defined, the WCF server can be made available to clients, like in the following example Net. Tcp. Binding binding new Net. Tcp. Binding. Uri base. Address new Urinet. Service. Host service. Host new Service. HosttypeofWCFServer, base. Address. service. Host. Add. Service. EndpointtypeofIWCFServer, binding, base. Address. service. Host. Open. Console. Write. LineString. FormatThe WCF server is ready at 0. Address. Console. Write. LinePress lt ENTER to terminate service. Console. Write. Line. Console. Read. Line. Note TCP is used in both examples to keep them as similar as possible. Refer to the scenario walk throughs later in this topic for examples using HTTP. There are many ways to configure and to host WCF services. This is just one example, known as self hosted. For more information, see the following topics Client Implementation Comparison. Creating a Client in. NET Remoting Once a. NET Remoting server object has been made available, it can be consumed by clients, like in the following example Tcp. Channel channel new Tcp. Channel. Channel. Services. Register. Channelchannel, ensure. Security true. Remoting. Server server Remoting. ServerActivator. Get. Object. typeofRemoting. Server. tcp localhost 8. Remoting. Server. Remoting. Customer customer server. Get. Customer4. 2. Console. Write. LineString. FormatCustomer 0 1 received. First. Name, customer. Last. Name. The Remoting. Server instance returned from Activator. Get. Object is known as a transparent proxy. It implements the public API for the Remoting. Server type on the client, but all the methods call the server object running in a different process or machine. Creating a Client in WCF The equivalent step in WCF involves using a channel factory to create the proxy explicitly. Like Remoting, the proxy object can be used to invoke operations on the server, like in the following example Net. Tcp. Binding binding new Net. Tcp. Binding. String url net. Endpoint. Address address new Endpoint. Addressurl. Channel. Factorylt IWCFServer channel. Factory. new Channel. Factorylt IWCFServer binding, address. IWCFServer server channel. Factory. Create. Channel. Customer customer server. Get. Customer4. 2. Console. Write. LineString. Format Customer 0 1 received. First. Name, customer. Last. Name. This example shows programming at the channel level because it is most similar to the Remoting example. Also available is the Add Service Reference approach in Visual Studio that generates code to simplify client programming. For more information, see the following topics Serialization Usage Both. NET Remoting and WCF use serialization to send objects between client and server, but they differ in these important ways They use different serializers and conventions to indicate what to serialize. NET Remoting supports by reference serialization that allows method or property access on one tier to execute code on the other tier, which is across security boundaries. This capability exposes security vulnerabilities and is one of the main reasons why Remoting endpoints should never be exposed to untrusted clients. Serialization used by Remoting is opt out explicitly exclude what not to serialize and WCF serialization is opt in explicitly mark which members to serialize. Serialization in. NET Remoting. NET Remoting supports two ways to serialize and deserialize objects between the client and server By value the values of the object are serialized across tier boundaries, and a new instance of that object is created on the other tier. Any calls to methods or properties of that new instance execute only locally and do not affect the original object or tier. By reference a special object reference is serialized across tier boundaries. When one tier interacts with methods or properties of that object, it communicates back to the original object on the original tier. By reference objects can flow in either direction server to client, or client to server. By value types in Remoting are marked with the Serializable attribute or implement ISerializable, like in the following example Serializable. Remoting. Customer. First. Name get set. Last. Name get set. Customer. Id get set. By reference types derive from the Marshal. By. Ref. Object class, like in the following example public class Remoting. Customer. Reference Marshal. By. Ref. Object. public string First. Name get set. Last. Name get set. Customer. Id get set. It is extremely important to understand the implications of Remotings by reference objects. If either tier client or server sends a by reference object to the other tier, all method calls execute back on the tier owning the object.
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