Hello,

I’ve a websocket (wss) connection issue (status 200 instead 101) between a “server” (running nginx/1.14.2 reverse proxy) and a “black box” (running nginx/1.8.1 web server with websocket).

The “server” has access to Internet and to the local network where is connected the “black box”. I called it “black box” because I can’t change anything except the nginx config file.

From local network, the nginx web site of the “black box” is working properly including websocket connection.

From Internet, the “server”, the nginx reverse proxy gives me an access to the nginx web site of the “black box” everything works except the websocket, from my web browser I receive a status 200 but I should get 101 switching protocol.

I’ve tried different setup without success.

Please let me know what you think,

Thanks a lot,

Regards,
YAGA

The “black box” wss websocket uses 80 (which is not usual) and its https website uses 443.

“black box” web server nginx config (extract)

server {
listen 443 ssl;
ssl_certificate /opt/xxx/cert.crt;
ssl_certificate_key /opt/xxx/cert.key;

server_name localhost;
proxy_buffering off;

location / {
root /opt/xxx/web;
try_files $uri $uri/ /index.html;
}
location /websocket {
proxy_pass https://127.0.0.1:80;
}
location /api/ {
proxy_pass https://127.0.0.1:80;
}
location /static/ {
root /opt/xxx/website;
expires 10d;
}


“server” reverse proxy nginx config (extract)

server {
listen 443 ssl;
listen 80 ssl;
server_name my_server.xyz;
client_max_body_size 100M;
proxy_buffering off;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
location / {
proxy_pass https://192.168.1.20/;
auth_basic "Private";
auth_basic_user_file /etc/nginx/.htpasswd;
}
location /api/ {
proxy_pass https://192.168.1.20:80/api/;
auth_basic off;
}
location /websocket {
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection upgrade;
proxy_http_version 1.1;
proxy_set_header Origin "";
proxy_pass https://192.168.1.20:80/;
auth_basic off;
}
}