Cannot start web server on executable

Question

Hi
We have an interesting problem with a webserver - we cannot get it to initialise using property nodes or the ini file on a compiled executable.
As part of our application we start the webserver to publish a status page to be viewed remotely. This works fine when we are running in the development environment and also when we are running an executable on a PC with the development environment installed, however it will not initialise on a PC with just the runtime engine installed.
I've attached a portion of code which functionally does exactly the same as in our main application. I've been using this as my tester code and built it into an exe while trying many different things to fix it.
When executed:
The code will sit in the while loop until I press stop.
Web server: Server Active = FALSE
error out = NO ERROR
In the full application the while loop waits for a couple of seconds before throwing an error if the server has not started. In this example I can leave the loop running for some time without it starting. Normally startup time is <50ms when succesful.
This is the ini file for the executable:
[WebTest]
server.app.propertiesEnabled=True
server.ole.enabled=True
server.tcp.serviceName="My Computer/VI Server"
server.vi.propertiesEnabled=True
WebServer.Enabled=True
WebServer.TcpAccess="+*"
WebServer.ViAccess="+*"
DebugServerEnabled=False
DebugServerWaitOnLaunch=False
And this is the webserver config file:
ErrorLog "$LVSERVER_ROOT/logs/error.log"
LogLevel 3
ServerName default
DocumentRoot "$LVSERVER_ROOT/../../www"
Listen 8000
ThreadLimit 10
TypesConfig "$LVSERVER_ROOT/mime.types"
DirectoryIndex index.html
LoadModulePath "$LVSERVER_ROOT/modules" "$LVSERVER_ROOT/LVModules" "$LVSERVER_ROOT/.."
LoadModule LVAuth lvauthmodule
LoadModule LVSnapshot lvsnapshotmodule
LoadModule LVRFP lvrfpmodule
LoadModule dir libdirModule
LoadModule copy libcopyModule
AddHandler LVAuthHandler
AddHandler LVSnapshotHandler .snap
AddHandler LVRFPHandler
AddHandler dirHandler
AddHandler copyHandler
CustomLog "$LVSERVER_ROOT/logs/access.log" "%h %l %u %t \"%r\" %>s %b"
KeepAlive on
KeepAliveTimeout 60
Timeout 60
As a side note, can anybody tell me where the $LVSERVER_ROOT variable is configured?
Things I have tried:
Copying a new config file from the default location before initialisation
Writing a pre-defined (hard-coded) config file before initialisation
Setting root directory locaitons before initialisation (this one actually throws an error because the server isn't active...)
Setting WebServer.Active = TRUE repeatedly inside the while loop
Enabled/disabled the web server in the ini file
System:
Labview 2010
PC's with running Windows 7
Thanks for any help because this is driving me slowly mad!
Ben
Solved!
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Answer 1

Hi Marco, thanks for replying.
I had looked at that guide previously and had done everything in it but one small section did give me a hint of something to try and I have solved my problem, so thanks!
Here is the issue if anyone is interested:
The DocumentRoot folder in the config has to exist otherwise the webserver cannot be started. So basically, make sure that the file points to a folder that exists!
This does leave two slight annoying issues though - you can't see if the folder exists (and then create it) before starting the webserver because you can't query the folder path without the webserver running.
AND
You can't really set the config file programatically because the settings from the file are loaded on execution, not on webserver start.
The result of this is that the config file and the document root folder should be created (and matching of course...) when the executable is built / installed on the system. Not a massive headache but it means remembering to put things into the build spec and not rely on the software to do the work on boot