How to get FCGI environment variables

Hello

For my FCGI application, I've to use a FCGI variable within the ApplicationCreator callback.

This means, I need the to get the value before I have a Wt::WApplication object created.

If I have already an application, it's easy to get the value with the method getCgiValue("FCGI_VARIABLE_NAME")

but is there a way to get such a value just after creating a Wt::WServer object?

Thanks and regards,

Beat

Replies (3)

RE: How to get FCGI environment variables - Added by Koen Deforche about 10 years ago

I'm not sure, but perhaps they can also be retrieved using the C lib call getenv() ?

RE: How to get FCGI environment variables - Added by Beat Brand about 10 years ago

Thanks Koen

I have tryed this and it works for common environment variables:

char* pPath;
pPath = getenv("WT_TMP_DIR");
if (pPath!=NULL)
    printf(">>> environment WT_TMP_DIR: %s\n", pPath);

but unfortunateli it doesn't for the FCGI variables. I use nginx and in the config file, i set the variable as this:

    fastcgi_param APP_ID icx;  # application id

Is there a way to get the APP_ID in this example in the same way like Wt does it in the ApplicationCreator callback?

Regards

Beat

RE: How to get FCGI environment variables - Added by Koen Deforche about 10 years ago

Reading up on FastCGI in the reference documentation, it seems that these variables only exist within the scope of a request.

So the earliest point at which you can get them is in the createApplication() callback, in which case you can query them from the WEnvironment object.

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