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ihttprequest-gethttpversion-method.md

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title IHttpRequest::GetHttpVersion Method
description The IHttpRequest::GetHttpVersion method returns the HTTP version for the request.
ms.date 10/07/2016
ms.assetid f040ca7b-9b53-af66-c03f-b298d45448ea

IHttpRequest::GetHttpVersion Method

Returns the HTTP version for the request.

Syntax

virtual VOID GetHttpVersion(  
   OUT USHORT* pMajorVersion,  
   OUT USHORT* pMinorVersion  
) const = 0;

Parameters

pMajorVersion
[OUT] A pointer to a USHORT buffer that receives the HTTP major version.

pMinorVersion
[OUT] A pointer to a USHORT buffer that receives the HTTP minor version.

Return Value

VOID.

Remarks

The GetHttpVersion method returns the HTTP version for the request, which enables you to write a module that can process a request differently depending on the HTTP version.

Note

Request for Comments (RFC) 1945, "Hypertext Transfer Protocol -- HTTP/1.0," and 2616, "Hypertext Transfer Protocol -- HTTP/1.1," describe the different HTTP versions.

Example

The following code example demonstrates how to use the GetHttpVersion method to create an HTTP module that retrieves the HTTP version for the current request. The example then returns this information to a Web client.

[!code-cppIHttpRequestGetHttpVersion#1]

Your module must export the RegisterModule function. You can export this function by creating a module definition (.def) file for your project, or you can compile the module by using the /EXPORT:RegisterModule switch. For more information, see Walkthrough: Creating a Request-Level HTTP Module By Using Native Code.

You can optionally compile the code by using the __stdcall (/Gz) calling convention instead of explicitly declaring the calling convention for each function.

Requirements

Type Description
Client - IIS 7.0 on [!INCLUDEwinvista]
- IIS 7.5 on Windows 7
- IIS 8.0 on Windows 8
- IIS 10.0 on Windows 10
Server - IIS 7.0 on [!INCLUDEwinsrv2008]
- IIS 7.5 on Windows Server 2008 R2
- IIS 8.0 on Windows Server 2012
- IIS 8.5 on Windows Server 2012 R2
- IIS 10.0 on Windows Server 2016
Product - IIS 7.0, IIS 7.5, IIS 8.0, IIS 8.5, IIS 10.0
- [!INCLUDEiisexp75], [!INCLUDEiisexp80], [!INCLUDEiisexp100]
Header Httpserv.h

See Also

IHttpRequest Interface