Windows Core Networking

Windows Core Networking APIs and technologies such as Winsock, TCP/IP stack, WFP, IPsec, IPv6, WSK, WinINet, Http.sys, WinHttp, QoS, and System.Net

Final version of Windows Web Services API for Windows XP, Vista, Server 2003 and Server 2008 is now available!

The final version of the Windows Web Services API for Windows XP, Windows Vista, Windows Server 2003...

Author: Ari Pernick [MSFT] Date: 10/09/2009

Why didn’t my cached content revalidate to the web server? (IE8 edition)

For the super eagle eyed developer or Web Server admin, you might have noticed that cache entry...

Author: Ari Pernick [MSFT] Date: 07/06/2009

HTTP Connection Management

HTTP is a request/response protocol. You request some resource like the HTML of a webpage and the...

Author: Ari Pernick [MSFT] Date: 05/08/2009

QoS Traffic Generator Example Usage

Update: This tool is no longer available on Microsoft Connect and there is no replacement download...

Author: Ari Pernick [MSFT] Date: 05/07/2009

WWSAPI security examples setup

Just a quick note that over on on haoxu’ s “Lost in History” blog is a posting about how to create...

Author: Ari Pernick [MSFT] Date: 05/06/2009

QoS Traffic Generator is now available on Connect

Update: This tool is no longer available on Microsoft Connect and there is no replacement download...

Author: Ari Pernick [MSFT] Date: 04/30/2009

Beta versions of Windows Web Services API available

Windows Web Services API team has just release the Beta version of the API for Windows XP, Windows...

Author: Ari Pernick [MSFT] Date: 02/24/2009

QoS in Windows 7

Hello all. My name is Charley. I’m the new QoS program manager for Windows Core Networking. It has...

Author: charwen Date: 01/27/2009

Come See Windows 7 DirectAccess and BranchCache @PDC08 Pavillion

We are demoing Windows 7 Direct Access and Windows 7 Branch Cache at the PDC08 pavillion. We are the...

Author: wndpteam Date: 10/29/2008

Heading to PDC 2008

I’ve been pretty busy Engineering Windows 7 with the rest of the windows networking team and we are...

Author: wndpteam Date: 10/07/2008

Misc Stuff to Grab

A page to dump quick downloads AsyncSocketServer.zip

Author: wndpteam Date: 04/21/2008

WinHTTP Questions: About Callbacks

Hello All, I am continuing the "WinHTTP Questions" series with some questions on WinHTTP callbacks....

Author: wndpteam Date: 03/03/2008

WinHTTP Questions - async close on a sync request

Hello, my name is Deepak and I'm a SDET in serviceability. We handle a bunch of questions from...

Author: wndpteam Date: 02/25/2008

Ready for Windows Server 2008?

Windows Server 2008 incorporates the completely rewritten TCP/IP stack we shipped in Windows Vista...

Author: wndpteam Date: 01/07/2008

Happy New Year

Just wanted to drop a quick Happy New Year to our readers and see if there is any topics that you...

Author: wndpteam Date: 01/07/2008

Throttling, DSCP, and 802.1p with Traffic Control

In his introductory post about the legacy Traffic Control (TC) API, Gabe discussed the host-based...

Author: wndpteam Date: 11/14/2007

Introduction to Windows QoS Traffic Control

Disclaimer: Traffic Control (TC) APIs have been marked as deprecated, and will be phased out...

Author: wndpteam Date: 10/09/2007

WiFi WMM Requirements for Vista Miniport Drivers

A number of partners who author wireless drivers for Vista have asked how they can ensure their WiFi...

Author: wndpteam Date: 09/18/2007

Detecting 802.1p Priority Tags: Part 3

Parts 1 and 2 of this series discussed how to determine whether an 802.1p tag was added to traffic,...

Author: wndpteam Date: 09/14/2007

Detecting 802.1p Priority Tags: Part 2

In Gabe’s last post on detecting 802.1p priority tags, he described at a relatively high-level why...

Author: wndpteam Date: 09/13/2007

Detecting 802.1p Priority Tags

Consider a case where a network application calls Windows QoS APIs to add a layer-2 IEEE 802.1Q...

Author: wndpteam Date: 09/07/2007

The Case of Vista Multimedia Playback and Network Throughput

Mark Russinovich has a great post today on the what and how of the network/multimedia vista issue...

Author: wndpteam Date: 08/27/2007

Ask Perf explains how winInet is used

Ask Perf, the blog of the Enterprise Platforms Windows Server Performance Team, is spending some...

Author: wndpteam Date: 08/21/2007

Receive Window Auto-Tuning on Vista.

Hi, my name is Katarzyna and I am the Program Manager within the Internet Protocols team. I have...

Author: wndpteam Date: 07/05/2007

OffTopic: Another way to generate XML in PowerShell

I recently needed to generate XML from PowerShell and was disappointed to see the PowerShell blog...

Author: wndpteam Date: 06/15/2007

Windows Rally Demo'd at WinHEC

I noticed that there was a demo of Rally technologies at the WinHEC keynote the other day, so I...

Author: wndpteam Date: 05/16/2007

WinHttp Configuration for Windows Vista

In my previous posts, I described the new WinHttp proxy, tracing and client certificate...

Author: wndpteam Date: 03/21/2007

Winsock SO_EXCLUSIVEADDRUSE on Vista

I've been asked a couple times about the socket option SO_EXCLUSIVEADDRUSE on Vista and especially...

Author: wndpteam Date: 03/19/2007

Writing a Peer-to-Peer Application Using .Net - Part 1

As per my last post, there is a new namespace (System.Net.PeerToPeer) available in the .NET...

Author: wndpteam Date: 03/12/2007

Preview: New Networking Features in the .NET Framework V3.5 codenamed Orcas

The March 2007 Community Technology Preview (CTP) release of the .NET Framework V3.5 codenamed...

Author: wndpteam Date: 02/28/2007

The Importance of 5GHz Operation for Video

Recently, I read a great article on ZDNet that discusses the challenges IEEE 802.11n faces with...

Author: wndpteam Date: 02/09/2007

Survey: Layered Service Providers (LSPs)

Have you worked on a Winsock Layered Service Provider (LSP) or are you considering using the...

Author: wndpteam Date: 02/07/2007

Survey: Help Shape the Future of Network Development

If you have worked on an application (commercial, prototype, hobby, etc) which accessed a network...

Author: wndpteam Date: 02/07/2007

Wireless Routers That Rock: First Works With Vista Router

Congratulations to D-Link (powered by Ubicom) for being the first ever to acheive a Windows Vista...

Author: wndpteam Date: 02/07/2007

Wireless Routers That Rock: First Certified For Vista Router

Congratulations to Buffalo for being the first to acheive a Certified for Windows Vista logo for...

Author: wndpteam Date: 02/05/2007

WinInet ETW Logs: Part 1 - Reading Logs

Hello, my name is Marcus Frazier. I am a developer on the WinInet team and I am here to talk about...

Author: wndpteam Date: 02/05/2007

QoS Support in Windows

A few months ago, a technical account manager for a customer sent an email to everyone in Windows...

Author: wndpteam Date: 02/02/2007

Event Tracing in Http.sys: Part 3 - Typical Request

Now that you are somewhat familiar with a single ETW event, let’s illustrate what a typical HTTP...

Author: wndpteam Date: 02/01/2007

Event Tracing in HTTP.sys: Part 2 - Anatomy of an Event

Continuing the series on Http.sys ETW Tracing, we will dissect an event as displayed in the default...

Author: wndpteam Date: 01/25/2007

Event Tracing in HTTP.sys: Part 1 - Capturing a Trace

Hi, I'm Jeff Balsley a test developer in the HTTP.sys team in Windows Networking. In this series I...

Author: wndpteam Date: 01/18/2007

Windows Vista Networking Goodies, Part 2: Device & Service Discovery

In my first post of this series, I talked about Windows Connect Now (WCN) and how easy it is in...

Author: wndpteam Date: 01/05/2007

Windows Vista Networking Goodies, Part 1: Windows Connect Now

In addition to a completely re-written core networking stack, Windows Vista makes networking a...

Author: wndpteam Date: 01/04/2007

Winsock Header Weirdness

There are two main Winsock headers used depending on which version your application needs. There is...

Author: wndpteam Date: 12/18/2006

Our Mike Flasko and Anthony Jones on Channel 9

There is a new video up on channel9 talking about Coding to support IPv6. Go check it out! -- Ari...

Author: wndpteam Date: 12/13/2006

LSP Installation Problems with WSCInstallProvider64_32

An LSP (or Winsock provider) can be installed into the Winsock catalog through several different...

Author: wndpteam Date: 11/28/2006

LLTD is Available for Non-Windows Platforms

Exciting news; the Windows Rally Development Kit was publicly released today on the Windows Rally...

Author: wndpteam Date: 11/03/2006

How to Enable the Windows Vista Network Map

As Gabe mentioned in his blog post titled “Xbox 360 Fall Update Includes LLTD,” the Xbox 360 now...

Author: wndpteam Date: 11/03/2006

Xbox 360 Fall Update Includes LLTD

There has been a lot of buzz about the recent fall update for the Xbox 360; however, an important...

Author: wndpteam Date: 11/01/2006

Filler - Keyboard shortcuts for launching any app

Windows Vista makes it even simpler to be productive with keyboard shortcuts. To launch any app:...

Author: wndpteam Date: 10/31/2006

WSAPoll, A new Winsock API to simplify porting poll() applications to Winsock.

Hello, my name is Chad Carlin. I'm a software developer on the Winsock Test Team. Among the many...

Author: wndpteam Date: 10/26/2006

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