Does nginx strip custom request headers?

Question

In my nginx.conf I have this line in my server {} section:

log_format debug 'header: "$http_x_myapp" cookies: "$http_cookie"';

Then if I do

curl -H "X_MYAPP:test" -H "COOKIE:yay" localhost

I get something like this in my access log:

header: "-" cookies: "yay"

Does anyone know why nginx is throwing away the X_MYAPP header?

Answer 1

Oops... I'm stupid.

curl -H "X-MYAPP:test" -H "COOKIE:yay" localhost

works... stupid underscores...