WCF Reliable Messaging makes web services more reliable. It addresses the following problems: A call to a web service does not make because the networks are not perfectly reliable as they suffer congestion and may drop signals. OR the service response does not make it back to the client. If I make multiple calls to Continue Reading…
A Contract is basically an agreement between the two parties i.e. Service and Client. There are two types of Contracts in WCF. Behavioral Contracts Service Contract:- Service contract describes the operation that service provide. A Service can have more than one service contract but it should have at least one Service contract. A Service Contract can be define Continue Reading…
WCF provides two types of hosting: Hosting in a Managed Application (Self Hosting) Windows Application Windows Service Console Application Hosting on Web Server IIS 6.0 supports only HTTP Windows Process Activation Service (WAS) i.e. IIS 7.0 supports HTTP, TCP, MSMQ, NamedPipes.
BasicHttpBinding It is based on SOAP 1.1 specification. No support for reliable Messaging. No support for transactions. It is a bit faster because security is disabled by default. WsHttpBinding It is based on SOAP 1.2 specification. It supports reliable messaging. It supports atomic and distributed transactions. As it supports advanced security options and its enabled by default, so Continue Reading…
Bindings in WCF actually defines that how to communicate with the service. Binding specifies that what communication protocol as well as encoding method will be used. Optionally, binding can specify other important factors like transactions, reliable sessions and security. Different types of bindings available BasicHttpBinding : It is suitable for communicating with ASP.NET Web services Continue Reading…
The Relationship between Address, Binding and Contract is called endpoints. A service endpoint has three basic elements or also called ABCs of an endpoint i.e. Address, Binding and Contract. Address: Address is the URL that identifies the location of the service. Binding: Binding defines how the service can be accessed. Contract: Contract identifies what is exposed Continue Reading…
Web service ASMX web service uses SOAP over HTTP only for sending and receiving messages. ASMX web service can be hosted in IIS only. ASMX web service uses XmlSerializer. ASMX web service provide limited security. WCF service WCF service uses SOAP over any transport protocol (HTTP, TCP/IP, MSMQ, Named Pipes etc) for sending and receiving messages. WCF service Continue Reading…
A WCF service has three core components. Service Class: A service class implementing in any CLR-based language and expose at least one method. Hosting Environment: a managed process for running service. Endpoint: a client uses it to communicate with service.
WCF provides the following advantages : WCF supports SOA (Service oriented architecture). WCF provides Interoperability. WCF provides Extensibility means We can easily customize a service behavior. WCF is Simple, Reliable and Secure.
Transactions A transaction is a unit of work. A transaction ensures that everything within that transaction either succeeds as a whole or fails as whole. For example, if a transaction contains three items of work to perform, and during the execution of that transaction one of those items fails, then all three fail. The transaction Continue Reading…