Trusted proxies, unauthenticated rate limits and various fixes

src/auth/send.rs

@@ -113,8 +113,9 @@ impl SendTokens {
             }
         }
 
-        send.access_count += 1;
-        send.save(conn).await?;
+        if !send.register_access(conn).await? {
+            return Self::invalid_error(&format!("Send {send_id}, max access reached"), "send_id_invalid", true);
+        }
 
         Ok(Self {
             access_claims: generate_send_access_claims(&send_id),