Nginx代理时header头中带＂_＂信息丢失问题的解决

location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_set_header X-Nginx-Proxy true; add_header Proxy-Node $upstream_addr; add_header Proxy-Status $upstream_status;   proxy_http_version 1.1; proxy_pass http://tianusa; }

underscores_in_headers on; （默认 underscores_in_headers 为off）