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WCF tutorial | WCF Hosting

WCF Hosting

In this part of the tutorial we are going to see the four different way of hosting the WCF service. WCF service cannot exist on its own; it has to be hosted in windows process called as host process. Single host process can host multiple servers and same service type can be hosted in multiple host process. As we discussed there are mainly four different way of hosting the WCF service.

Multiple hosting and protocols supported by WCF.Microsoft has introduced the WCF concept in order to make distributed application development and deployment simple.

Hosting Environment Supported protocol
Windows console and form application HTTP,net.tcp,net.pipe,net.msmq
Windows service application (formerly known as NT services) HTTP,net.tcp,net.pipe,net.msmq
Web server IIS6 http, wshttp
Web server IIS7 - Windows Process Activation Service (WAS) HTTP,net.tcp,net.pipe,net.msmq

A summary of hosting options and supported features.

Feature Self-Hosting IIS Hosting WAS Hosting
Executable Process/ App Domain Yes Yes Yes
Configuration App.config Web.config Web.config
Activation Manual at startup Message-based Message-based
Idle-Time Management No Yes Yes
Health Monitoring No Yes Yes
Process Recycling No Yes Yes
Management Tools No Yes Yes

Tips!

  • Always create the service with Interface->Implementation format, mention the contract in Interface.
  • Define the service in Class library and refer the class library in Host project. Don’t use service class in host project.
  • Change the instance mode to per call as default.
  • Always catch exception using try/catch block and throw exception using FaultException < T >.
  • Logging and Include exception should be enable while compiling the project in debug mode. While in production deployment disable the logging and Include exception details.