Windows CE Networking Team WebLog

As discussed in my previous post, the autobind_lsp performs hard binding. This will cause issues for LSPs that need to connect to localhost. About hard binding: Hard binding is a per socket TCP options specified by: WSAIoctl(....

WinCE's ASP is a pretty good approximation of the key functionality of the desktop ASP (or at least as of ASP on IIS4, when CE ASP was implemented). One thing a lot of folks have issues with is that CE ASP doesn't have Server.CreateObject (). They think...

This blog will discuss transient errors , the fourth bullet point in my first blog about networked audio drivers. In an audio driver that plays directly to local hardware (local audio driver or LAD), the audio is usually sent to hardware in fully decoded...

Windows Mobile 5.0 shipped MSXML3, as I describe here . On PocketPC 2000-2003 devices, we ship MSXML2. Both of these are pretty much straight ports from the desktop MSXML versions, with some features removed and some tweaking to better conserve RAM on...

It turns out there was a bug in the way that the CE 5.0 registry was initialized for hive based registries. This was manifesting itself in DCOM related registry keys, causing them to be garbled and making DCOM not function. We've fixed the problem...

In a previous blog article I discussed the basics of extending the Windows CE Bluetooth Hands Free Profile. This included how to plug into the Audio Gateway (AG) in order to send and receive AT commands from a Hands Free (HF) device. In this article I...

The following description of the autobind_lsp is copied from http://www.intrinsyc.com/whitepapers/RIL_whitepaper_MS_Intrinsyc_June2004.pdf" When an application makes a Connection Manager connection request, Connection Manager determines which IP interface...

This blog will discuss bandwidth , the second bullet point in my first blog about networked audio drivers. In an audio driver that plays directly to local hardware (local audio driver or LAD), bandwidth is usually not a concern since it is only dependent...

By default, if you have some long running system service, you should target it to run in services.exe. To quote the services.exe white paper when it described why putting say a web server in device.exe was a bad idea: However, using device.exe also...

In WM 5.0 2 new LSPs are present by default, the dtpt_lsp and the autobind_lsp. This article will discuss the dtpt_lsp and the next article will talk about the autobind_lsp. Desktop Passthrough (DTPT) is the technology that allows the CE device to...

[Revision 10/20/05 - minor changes to make content clearer] This blog will discuss timing , the first bullet point in my first blog about networked audio drivers. In an audio driver that plays directly to local hardware (LAD), the mechanism for...

When configuring the CE Web Server's virtual root settings in the registry, there are a number of mistakes people make that cause their VRoot to not show up the way they expect. I'm targeting this both at OEMs who will typically put these registry settings...

Often clients start before servers, and need to be signaled when the service is ready. In this post we'll find a good solution to this problem. Approach #1: Server signals a named event, clients waits for the event. ...

[Updated to reflect status of other parts of this blog] In this series of blogs I will discuss the implementation of an audio driver that starts from the wavdev sample and streams audio over a network in real time. In part 1 I will list the main...

There are a few popular (and extremely cool!) server components from Windows CE 5.0 that you can download and install on Windows Mobile 5.0: the Web Server, UPnP Device, UPnP Control Point, MSMQ and the PNRP service. Since a large number of CE OS components...

Being in networking and middleware, I have to deal with locking / critical sections a lot. Multi-threaded code is inherently tricky to get right. You have problems with deadlock - which are straightforward to debug usually assuming you have a good debugger...

IIDFromString is a function exported by ole32.lib in order to get a GUID from a WCHAR* string. I get asked why doesn't Windows CE ole32.lib support this functionality, since it's a reasonably common thing to do. The answer is CE does support this function...

---------------------------------------- RIL proxy logging in Magneto AKU2: Starting with Magneto AKU2, RIL proxy logging feature is componentized into a separate, optional DLL, rillog.dll. The purpose of this change is to reduce ROM footprint of RIL...

Many thanks to Mike Hall for giving me a moment in the spotlight. A year ago he recorded me giving a talk about the CE Web Server and it's available here . [Author: John Spaith]

For Windows Mobile 5.0 we added a new set of APIs for getting notifications from the Windows CE Bluetooth stack. RequestBluetoothNotifications StopBluetoothNotifications There is more information on using these APIs here . Today you can...

As I describe here , people actually trying to use RemoteAdmin have had numerous difficulties. The problems are even worse than I first realized. RemoteAdmin requires a ton of tweaking if you are trying to use it on a non-gateway device. I have updated...

A common error some Windows CE developers hit when using MSXML is that they call into some functionality and they get a not implemented error (E_NOTIMPL=0x80004001) when the CE Docs say the feature is supported. In particular, people hit this a lot when...

The Windows CE Bluetooth stack has the capability to expose a COM port interface to applications. This allows legacy applications that communicate over serial ports to use the Bluetooth Serial Port Profile. Common applications of this include GPS and...

I've been asked many times on the newsgroups how to access files from an ASP page running on Windows CE. Or how to create a process, or get at the registry, or any other of a bunch of system level actions. The answer to these questions is that you can...

Windows CE supports the Bluetooth Hands Free Profile Audio Gateway (AG). This profile allows you to use a Bluetooth headset or car kit as a hands free (HF) device. This feature is supported on Windows CE 5.0 and Windows Mobile 5.0 (and WM2003 SE). You...