HTTP Module

This guide demonstrates the basics of creating a C++ web service that processes incoming HTTP requests.

1. On the Project menu, select the Add New Item...
2. In the Add New Item dialog, select the Visual C++ and then select Header File (.h)
3. Enter the Name HelloWebWorld and click the Add button.
4. Add the following code to the file:

   #pragma once
   #include "tef/Tentity.h"
   
   class HelloWebWorld : public tef::RequestHandler
   {
   public:
   	HelloWebWorld();
   	virtual ~HelloWebWorld();
   	virtual const char* Path() const override;
   	virtual void Process(tef::RequestContext& context) const override;
   };
                   

5. On the Project menu, select the Add New Item...
6. In the Add New Item dialog, select the Visual C++ and then select C++ File (.cpp)
7. Enter the Name HelloWebWorld and click the Add button.
8. Add the following code to the file:

   #include "stdafx.h"
   #include "HelloWebWorld.h"
   
   static HelloWebWorld Instance;
   
   HelloWebWorld::HelloWebWorld()
   {
   	tef::Register(this);
   }
   
   HelloWebWorld::~HelloWebWorld()
   {
   }
   
   const char* HelloWebWorld::Path() const
   {
   	return "/helloworld";
   }
   
   void HelloWebWorld::Process(tef::RequestContext& context) const
   {
   	tef::JsonOutput<128> json(context.Output);
   	json.startObject();
   	json.writeStringProperty(L"Message", L"Hello World!");
   	json.endObject();
   }
                   

9. The default configuration (default.app) is set listening to port 42580 which must be registered on the first run:
   1. Locate the addurl.bat file in the tef_sdk directory.
   2. Edit the user name in the addurl.bat file
   3. Execute the addurl.bat file with the administrator privileges.
   
   Note: the default.app is a text file:

   [address]
   http://+:42580/
                   

   [address]

   : the syntax is explained here.

10. Compile (F7) and run the project (F5). It starts the tefsvr.exe.
11. In a browser, enter http://127.0.0.1:42580/helloworld. The following image depicts the output:
    
    
12. Use Ctrl+C in the command prompt window to stop the server.
13. Next Parallel Fibonacci

See Also:

C++ API Reference