[SYSADMIN ACTION][Bugfix:Server] limit websocket cookies

Gemfile.lock

@@ -284,7 +284,6 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.0)
-    wdm (0.2.0)
     webrick (1.9.2)
     yell (2.2.2)
 
@@ -301,7 +300,6 @@ DEPENDENCIES
   github-pages (= 232)
   html-proofer (~> 3.19.4)
   json
-  wdm (>= 0.1.1)
   webrick (~> 1.9)
 
 BUNDLED WITH

_docs/sysadmin/installation/version_notes/v26.10.01.md

@@ -0,0 +1,29 @@
+---
+title:  v26.10.01 > Limit size of websocket cookies
+category: System Administrator > Installation Version Notes
+---
+
+Release [v26.10.01](https://github.com/Submitty/Submitty/releases/v26.10.01)
+adds a configuration setting to limit the cookies that are passed to the NGINX server.
+
+Follow these steps to reconfigure the socket server.
+
+
+1. Edit your NGINX configuration `/etc/nginx/sites-available/submitty.conf` and add the
+   `proxy_set_header` configuration line below inside of the `location /ws` block,
+   similar to the sample file:
+   [https://github.com/Submitty/Submitty/blob/main/.setup/nginx/submitty.conf](https://github.com/Submitty/Submitty/blob/main/.setup/nginx/submitty.conf)
+
+    ```
+    # Forward only the cookie the socket server reads. Its HTTP parser (Ratchet)
+    # closes handshakes over 4096 bytes with a 413, and cookies that other sites
+    # set on the same domain can push the handshake past that.
+    proxy_set_header Cookie "submitty_websocket_token=$cookie_submitty_websocket_token";
+    ```
+
+2. Run regular install script.
+
+   ```
+   sudo /usr/local/submitty/.setup/INSTALL_SUBMITTY.sh
+   ```
+

navtreedata.js

@@ -158,6 +158,7 @@ var NAVTREE =
                 [ "Ansible Server Installation", "/sysadmin/installation/ansible", null ],
                 [ "Version Notes", "/sysadmin/installation/version_notes/index", [
                     [ "Overview", "/sysadmin/installation/version_notes/index", null],
+                    [ "v26.10.01", "/sysadmin/installation/version_notes/v26.10.01", null ],
                     [ "v26.02.01", "/sysadmin/installation/version_notes/v26.02.01", null ],
                     [ "v25.07.01", "/sysadmin/installation/version_notes/v25.07.01", null ],
                     [ "v23.12.02", "/sysadmin/installation/version_notes/v23.12.02", null ],