I'm using nginx as a reverse proxy for about 2000 websites. I'm trying to find a good way to redirect all www traffic to nonwww addresses. I don't want to have a separate entry for every domain...just a global redirect in the server block preferably. I found lots of examples to do this one domain at a time, but does anyone have any suggestions on how to do it for the whole server?

I was thinking of extracting the domain something like this then using an if statement, but I understand that if's are not recommended:

server_name ~^(\.)?(?<domain>.+)$;

thanks,
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here's my server block:

server {
listen 80;
server_name _;

location / {
proxy_pass http://websites;
}
}