400 Bad Request The plain HTTP request was sent to HTT in Nginx

400 Bad Request The plain HTTP request was sent to HTTPS port in Nginx upstream payment443 {server 10.11.157.111: 443 backup; server 10.11.157.222: 443 weight = 1;} www.2cto.com Location ~ /Payment/{ssi on; proxy_pass http: // payment443; include/opt/apps/nginx/conf/proxy. conf;} Because I configured the redirection to port 443 of the HTTPS protocol, but the Location in nginx is indeed configured with the HTTP protocol,

Therefore, you should change HTTP to HTTPS. For example, you must change it to proxy_pass http: // payment443. Author: jackguo1123