Added special DEFAULT upstreams for catch up all.

README.md

@@ -201,6 +201,11 @@ myhost.mydomain.com:
       healthcheck: false
       servers:
         - "127.0.0.1:8001"
+DEFAULT:
+  paths:
+    "/":
+      servers:
+        - "127.0.0.1:3000"
 ```
 
 **This means:**
@@ -228,6 +233,7 @@ myhost.mydomain.com:
 - All requests to servers will require JWT token authentication (You can comment out the authorization to disable it),
     - Firs parameter specifies the mechanism of authorisation `jwt`
     - Second is the secret key for validating `jwt` tokens
+- `DEFAULT` catch up everything else and proxy to `127.0.0.1:3000`
 
 ---
 

src/web/proxyhttp.rs

@@ -290,5 +290,6 @@ fn return_header_host_from_upstream(session: &Session, ump_upst: &UpstreamsDashM
         let h = session.req_header().headers.get("host")?.to_str().ok()?;
         h.split_once(':').map_or(h, |(host, _)| host)
     };
-    ump_upst.get(host_str).map(|entry| entry.key().clone())
+
+    ump_upst.get(host_str).or_else(|| ump_upst.get("DEFAULT")).map(|entry| entry.key().clone())
 }