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--- reverse_proxy:nginx_reverse_proxy:passing_request_headers [2025/05/20 16:14] – created peter
+++ reverse_proxy:nginx_reverse_proxy:passing_request_headers [2025/05/20 16:18] (current) – peter
@@ Line 1: / Line 1: @@
 ====== Reverse Proxy - NGINX Reverse Proxy - Passing Request Headers ======
+By default, NGINX modifies two header fields in proxied requests, “Host” and “Connection”, and eliminates the header fields whose values are empty strings.
+  * “Host” is set to the value of the **$proxy_host** variable, and
+  * “Connection” is set to close.
+To change these settings, as well as modify other header fields, use the **proxy_set_header** directive.
+  * This directive can be specified in a location or higher.
+  * It can also be specified in a particular server context or in the http block.
+For example:
+<code>
+location /some/path/ {
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_pass http://localhost:8000;
+}
+</code>
+<WRAP info>
+**NOTE:**  In this configuration the “Host” field is set to the $host variable.
+</WRAP>
+----
+===== To prevent a header field from being passed to the proxied server =====
+Set it to an empty string as follows:
+<code>
+location /some/path/ {
+    proxy_set_header Accept-Encoding "";
+    proxy_pass http://localhost:8000;
+}
+</code>
+----