Merge pull request #179736 from duongau/afdupdates

AFD troubleshooting issues updates - merge and relocate article

Author: AnnaMHuff

.openpublishing.redirection.json

@@ -463,6 +463,16 @@
       "redirect_url": "/azure/frontdoor/edge-locations-by-abbreviation",
       "redirect_document_id": false
     },
+    {
+      "source_path_from_root": "/articles/frontdoor/standard-premium/troubleshoot-route-issues.md",
+      "redirect_url": "/azure/frontdoor/troubleshoot-issues",
+      "redirect_document_id": false
+    },
+    {
+      "source_path_from_root": "/articles/frontdoor/front-door-troubleshoot-routing.md",
+      "redirect_url": "/azure/frontdoor/troubleshoot-issues",
+      "redirect_document_id": false
+    },
     {
       "source_path_from_root": "/articles/azure-sql/database/doc-changes-updates-release-notes.md",
       "redirect_url": "/azure/azure-sql/database/doc-changes-updates-release-notes-whats-new",

articles/frontdoor/TOC.yml

@@ -118,8 +118,8 @@
     href: front-door-diagnostics.md
   - name: Troubleshoot
     items:
-    - name: Troubleshoot routing issues
-      href: front-door-troubleshoot-routing.md
+    - name: Troubleshooting Front Door issues
+      href: troubleshoot-issues.md
     - name: Allowed certificate authorities
       href: https://ccadb-public.secure.force.com/microsoft/IncludedCACertificateReportForMSFT
 - name: Reference

articles/frontdoor/front-door-http-headers-protocol.md

@@ -22,8 +22,11 @@ This article outlines the protocol that Front Door supports with parts of the ca
 >Front Door doesn't certify any HTTP headers that aren't documented here.
 
 ## Client to Front Door
+
 Front Door accepts most headers for the incoming request without modifying them. Some reserved headers are removed from the incoming request if sent, including headers with the X-FD-* prefix.
 
+The debug request header, "X-Azure-DebugInfo", provides additional debugging information about the Front Door. You need to send "X-Azure-DebugInfo: 1" request header from client to Front Door to receive [optional response headers](#optional-debug-response-headers) from Front Door to client. 
+
 ## Front Door to backend
 
 Front Door includes headers for an incoming request unless they're removed because of restrictions. Front Door also adds the following headers:
@@ -51,6 +54,8 @@ Any headers sent to Front Door from the backend are also passed through to the c
 | X-Azure-Ref |  *X-Azure-Ref: 0zxV+XAAAAABKMMOjBv2NT4TY6SQVjC0zV1NURURHRTA2MTkANDM3YzgyY2QtMzYwYS00YTU0LTk0YzMtNWZmNzA3NjQ3Nzgz* </br> This is a unique reference string that identifies a request served by Front Door, which is critical for troubleshooting as it's used to search access logs.|
 | X-Cache | *X-Cache:* This header describes the caching status of the request <br/> - *X-Cache: TCP_HIT* : The first byte of the request is a cache hit in the Front Door edge. <br/> - *X-Cache: TCP_REMOTE_HIT*: The first byte of the request is a cache hit in the regional cache (origin shield layer) but a miss in the edge cache. <br/> - *X-Cache: TCP_MISS*: The first byte of the request is a cache miss, and the content is served from the origin. <br/> - *X-Cache: PRIVATE_NOSTORE* : Request cannot be cached as Cache-Control response header is set to either private or no-store. <br/> - *X-Cache: CONFIG_NOCACHE*: Request is configured to not cache in the Front Door profile. |
 
+### Optional debug response headers
+
 You need to send "X-Azure-DebugInfo: 1" request header to enable the following optional response headers.
 
 | Header  | Example and description |

articles/frontdoor/front-door-troubleshoot-routing.md

@@ -131,8 +131,8 @@
       href: how-to-reports.md
   - name: Troubleshoot
     items:
-    - name: Trouble routing issues
-      href: troubleshoot-route-issues.md
+    - name: Troubleshooting Front Door issues
+      href: ../troubleshoot-issues.md?toc=%2fazure%2ffrontdoor%2fstandard-premium%2ftoc.json
     - name: Allowed certificate authorities
       href: https://ccadb-public.secure.force.com/microsoft/IncludedCACertificateReportForMSFT
     - name: File Compression