auto dial issue

I fixed a auto dial bug last week. I can't tell many details in blog. Just write an artical for knowledge acquisition.

 

Auto dial is implemented in CE as a driver in autoras.dll. CE loads the dll when booting up, if sysgen_autoras is set before building the image. And then, the most importment thing for coding, is to decide how to trigger autoras process. For example, you can trigger it in DNS, or routing or somewhere.

 

The trigger code is very simple. Just load the autoras.dll, get the function pointer, and then call the autodial function.

#define AUTORAS_DIAL_SYNC TEXT("Autoras_Dial_Sync")typedef BOOL (* PFN_AUTORAS_DIAL_SYNC)(void);PFN_AUTORAS_DIAL_SYNC pfnAutoras; ... HMODULE hAutorasDll; hAutorasDll= LoadLibrary(TEXT("Autoras.dll")); if (hAutorasDll) pfnAutoras = (PFN_AUTORAS_DIAL_SYNC)GetProcAddress(hAutorasDll, AUTORAS_DIAL_SYNC); // If the trigger operation failed, and auto dial is enabled, // and auto dial has not been triggered yet, // then call the autoras function here. And set the Autoras flag. if ((dwStatus != ERROR_SUCCESS) && !bRetried && pfnAutoras && pfnAutoras()) { bRetried = TRUE; }...