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Remove Proxy-Connection HTTP upstream header

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As per RFC 9110, this header SHOULD be removed by a proxy.

Also, as per RFC 9113, this header MUST be removed when proxying to an
HTTP/2 backend.
This commit is contained in:
Roman Arutyunyan authored and Roman Arutyunyan committed 2026-04-14 09:53:13 +04:00
1 parent b761b0485b
commit 00979ba9d8
2 files changed
+3
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src/http/modules/ngx_http_grpc_module.c
+1
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@@ -514,6 +514,7 @@ static ngx_keyval_t ngx_http_grpc_headers[] = {
{ ngx_string("TE"), ngx_string("$grpc_internal_trailers") },
{ ngx_string("Host"), ngx_string("") },
{ ngx_string("Connection"), ngx_string("") },
{ ngx_string("Proxy-Connection"), ngx_string("") },
{ ngx_string("Transfer-Encoding"), ngx_string("") },
{ ngx_string("Keep-Alive"), ngx_string("") },
{ ngx_string("Expect"), ngx_string("") },
src/http/modules/ngx_http_proxy_module.c
+2
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@@ -747,6 +747,7 @@ static char ngx_http_proxy_version_11[] = " HTTP/1.1" CRLF;
static ngx_keyval_t ngx_http_proxy_headers[] = {
{ ngx_string("Host"), ngx_string("$proxy_internal_host") },
{ ngx_string("Connection"), ngx_string("") },
{ ngx_string("Proxy-Connection"), ngx_string("") },
{ ngx_string("Content-Length"), ngx_string("$proxy_internal_body_length") },
{ ngx_string("Transfer-Encoding"), ngx_string("$proxy_internal_chunked") },
{ ngx_string("TE"), ngx_string("") },
@@ -775,6 +776,7 @@ static ngx_str_t ngx_http_proxy_hide_headers[] = {
static ngx_keyval_t ngx_http_proxy_cache_headers[] = {
{ ngx_string("Host"), ngx_string("$proxy_internal_host") },
{ ngx_string("Connection"), ngx_string("") },
{ ngx_string("Proxy-Connection"), ngx_string("") },
{ ngx_string("Content-Length"), ngx_string("$proxy_internal_body_length") },
{ ngx_string("Transfer-Encoding"), ngx_string("$proxy_internal_chunked") },
{ ngx_string("TE"), ngx_string("") },