two servers on different machine with one IP - nginx

Question

I have Nextcloud server running fine with ip 192.168.0.1
Installed collabora online server on another machine with IP 192.168.0.2
I have one public IP and two separate domains for those servers pointing at the same piblic IP
what I try to do is use nginx to distribute the traffic accordingly.
The configuration for the Nextcloud is working fine:
upstream php-handler {
server unix:/var/run/php/php7.0-fpm.sock;
}
server {
listen 80;
listen [::]:80;
server_name first.domain.com;
# enforce https
return 301 https://$server_name$request_uri;
}
server {
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name first.domain.com;
...
now I am putting second config for collabora server:
server {
listen 80;
listen [::]:80;
server_name second.domain.com;
# enforce https
return 301 https://$server_name$request_uri;
}
server {
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name second.domain.com;
ssl_certificate /etc/ssl/private/server.crt;
ssl_certificate_key /etc/ssl/private/server.key;
ssl_password_file /etc/ssl/private/server.pass;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass https://second.domain.com;
}
}
I have added 192.168.0.2 second.domain.com to the hosts file
this server also has nginx running:
server {
listen 443 ssl;
server_name second.domain.com;
ssl_certificate /etc/ssl/private/server.crt;
ssl_certificate_key /etc/ssl/private/server.key;
ssl_password_file /etc/ssl/private/server.pass;
# static files
location ^~ /loleaflet {
proxy_pass https://localhost:9980;
proxy_set_header Host $http_host;
}
# WOPI discovery URL
location ^~ /hosting/discovery {
proxy_pass https://localhost:9980;
proxy_set_header Host $http_host;
}
# main websocket
location ~ ^/lool/(.*)/ws$ {
proxy_pass https://localhost:9980;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $http_host;
proxy_read_timeout 36000s;
}
# download, presentation and image upload
location ~ ^/lool {
proxy_pass https://localhost:9980;
proxy_set_header Host $http_host;
}
# Admin Console websocket
location ^~ /lool/adminws {
proxy_pass https://localhost:9980;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $http_host;
proxy_read_timeout 36000s;
}
}
the collabora window opens blank in nextcloud when i open a file
nginx on the nextcloud server gives response 400.
"GET /lool/https%3A%2F%2Ffirst.domain.com%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F6932_ocqfsn9n2v8v%3Faccess_token%3DOObPuPjPgz7ycgmvNAklYGo1clIANWXU%26access_token_ttl%3D0%26permission%3Dedit/ws?WOPISrc=https%3A%2F%2Ffirst.domain.com%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F6932_ocqfsn9n2v8v&compat=/ws HTTP/1.1" 400 0
So somehow I am not doing the redirection right. I need help with the nginx configurations. I know collabora server works because when I set second.domain.com 192.168.0.2 in the hosts file of the client and no redirection from nginx then it works fine