keycloak redirects urls to http instead of https

I have a keycloak setup behind SSL terminating nginx proxy. When i try to access application secured using keycloak, keycloak generates url like following:

https://keycloak.mydomain.com/auth/realms/AdfsDemo/protocol/openid-connect/auth?client_id=adfs&redirect_uri=http%3A%2F%2Fmyapp.mydomain.com%2Fsignin-oidc&response_type=code&scope=openid%20profile&response_mode=form_post&nonce=636603226928179925.MmUzYWEzMGYtNTAxOS00MTBkLTk4MWItMDU3MGY1NjAxOGViNzlhYmZiMDQtNTQyOC00Y2YzLTk2MjMtZjNjMWFjNTI1YzM3&state=CfDJ8NQosUp9FsZBgifUu0XsVAEasSeKTitMPUM5yatTiQGf_Kz_X9CpQNPIHOkGr1hsgdErjhbw4ULINvCJgnFdWYctcIuhoyhOTt2Km3xy0qFh4o9gNFkPQlbEqc771MmVC2FUqUtvDqf8zChsyDDfGkxZ6Kc1y36I_3lFfzfubBAyXK0cEb_3AdZBMyDRp2WMykrarD8Z-0iGBk_q5Z8akYYHyCc7q-FSKxP1DW59nHpF8fM6P-S8SdVxvTW2dtEyV9UL6rlqD8dabNNJxhoaXEeBzwRh84it2vVlaaYpQ7d1ErZ51hpuzhG2gYSxnowMdQa8gfd8X1hs5HsgJXL-gCmBgTlxWNQfAy5DRpcX8Wi0&x-client-SKU=ID_NET&x-client-ver=2.1.4.0

I can access keycloak on https just fine. But when i try to access application secured using keycloak You will notice that redirect_uri generated by keycloak is http instead of https.

Here is my nginx configuration

server {       
listen 443  ssl;
server_name  myapp.mydomain.com;
ssl_certificate /etc/nginx/external/wildcard_mydomain_com.pem;
ssl_certificate_key /etc/nginx/external/private.rsa;

location / {                 
   proxy_set_header Host myapp.mydomain.com;         
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-Proto $scheme;       
   proxy_set_header X-Forwarded-Port 443;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;                               
   proxy_pass http://172.30.5.28:8001;
 }
}

#Keycloak Service
server {
listen 443  ssl;
server_name  keycloak.mydomain.com;  
ssl_certificate /etc/nginx/external/wildcard_mydomain_com.pem;
ssl_certificate_key /etc/nginx/external/private.rsa;
location = / {
     return 301 https://keycloak.mydomain.com/auth; 
}  
location /auth {
   proxy_pass http://172.30.5.28:8080;        
   proxy_set_header Host keycloak.mydomain.com;  
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-Proto https;
   proxy_set_header X-Forwarded-Port 443;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;           
 }
}

Any help is greatly appreciated.

Thanks, Rahul

回答1:

I was able to resolve this issue. We have dotnet core application and keycloak behing ssl terminating SSL proxy. Nginx setting as mentioned above is correct, the issue was application was not forwarding the headers properly to keyclaok. Following link helped: https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/proxy-load-balancer?view=aspnetcore-2.1

回答2:

    var forwardingOptions = new ForwardedHeadersOptions()
{
    ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
};
forwardingOptions.KnownNetworks.Clear(); //its loopback by default
forwardingOptions.KnownProxies.Clear();
app.UseForwardedHeaders(forwardingOptions);

this code block from another answer solved the issue for me. .net Core X Forwarded Proto not working