when I use https,it case 'Error during WebSocket handshake: Unexpected response code: 400'

When I use http protocol no problem happened,but then I deploy my project on https protocol,it case ‘Error during WebSocket handshake: Unexpected response code: 400’,How to solve this problem? This is my nginx Config.

upstream site {       
    server 127.0.0.1:3000;
}
server {
    listen 443;
    charset     utf-8;
    client_max_body_size 75M;
    ssl on;
    ssl_certificate  /etc/nginx/ssl/site_cert.crt;
    ssl_certificate_key  /etc/nginx/ssl/site.key;

    location / {
         include proxy_params;
         proxy_pass_header Server;
         proxy_set_header Host $http_host;
         proxy_redirect off;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Scheme $scheme;
         proxy_pass http://site;
    }

    location /socket.io {
        include proxy_params;
        proxy_http_version 1.1;
        proxy_buffering off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_pass http://site/socket.io;
    }
}

[bgschiller]

I was facing this issue when using Elastic Beanstalk and an AWS load balancer.

Websockets travel over tcp, not http, so we needed to tell the load balancer to forward raw tcp instead of operating at the http layer.

Sorry to comment on a closed issue, but I hope this is helpful for some people.

[himanshu-signcatch]

@jarrai Hi, I am facing the same issue. Can you elaborate on how you rectified it? Thank You