Delphi Windows Service
The 'Introduction to WCF Programming in Delphi' session starts from WCF object model basics, including message-based communication stack, service contracts, endpoints, transports, exchange patterns, and interoperability with Web Services. Debugging Windows services with Delphi can be quite a challenge. The documented and recommended way to debug a Windows service with Delphi is to use.
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Delphi Windows Service Sample
Go Up to Service applications take requests from client applications, process those requests, and return information to the client applications. They typically run in the background, without much user input. A Web, FTP, or e-mail server is an example of a service application. To create an application that implements a Win32 service: • Choose File > New > Other, and double-click Service Application in the New Items dialog box. This adds a global variable named Application to your project, which is of type TServiceApplication. • A Service window appears that corresponds to a service ( TService).
Implement the service by setting its properties and event handlers in the Object Inspector. • You can add additional services to your service application by choosing File > New > Other, and double-click Service in the New Items dialog box. Do not add services to an application that is not a service application. While a TService object can be added, the application will not generate the requisite events or make the appropriate Windows calls on behalf of the service. • After your service application is built, you can install its services with the Service Control Manager (SCM).
• Image could be encrypted. 
This is done with ecryptfs, a POSIX-compliant enterprise cryptographic stacked filesystem. • One image restoring to multiple local devices is supported.
Other applications can then launch your services by sending requests to the SCM. To install your application's services, run it using the /INSTALL option.
The application installs its services and exits, giving a confirmation message if the services are successfully installed. You can suppress the confirmation message by running the service application using the /SILENT option. To uninstall the services, run it from the command line using the /UNINSTALL option. (You can also use the /SILENT option to suppress the confirmation message when uninstalling). Note: This service has a TServerSocket whose port is set to 80.