From e6519bad31f6cbbfecf0f3fe12731626aa7d8c6f Mon Sep 17 00:00:00 2001
From: "renovate[bot]" <29139614+renovate[bot]@users.noreply.github.com>
Date: Fri, 23 Aug 2024 21:34:17 +0000
Subject: [PATCH] fix(deps): update module github.com/prometheus/client_golang
 to v1.20.2

---
 go.mod                                                      | 2 +-
 go.sum                                                      | 4 ++--
 .../prometheus/client_golang/prometheus/promhttp/http.go    | 6 ++++--
 vendor/modules.txt                                          | 2 +-
 4 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/go.mod b/go.mod
index b9cd98d..b465caf 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.20
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0
 	github.com/go-kit/log v0.2.1
-	github.com/prometheus/client_golang v1.20.1
+	github.com/prometheus/client_golang v1.20.2
 	github.com/prometheus/common v0.55.0
 	github.com/prometheus/exporter-toolkit v0.11.0
 )
diff --git a/go.sum b/go.sum
index 9abdcb0..7088e7d 100644
--- a/go.sum
+++ b/go.sum
@@ -29,8 +29,8 @@ github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v1.20.1 h1:IMJXHOD6eARkQpxo8KkhgEVFlBNm+nkrFUyGlIu7Na8=
-github.com/prometheus/client_golang v1.20.1/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
+github.com/prometheus/client_golang v1.20.2 h1:5ctymQzZlyOON1666svgwn3s6IKWgfbjsejTMiXIyjg=
+github.com/prometheus/client_golang v1.20.2/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
 github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
 github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
 github.com/prometheus/common v0.55.0 h1:KEi6DK7lXW/m7Ig5i47x0vRzuBsHuvJdi5ee6Y3G1dc=
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
index 2e0b9a8..e598e66 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
@@ -203,8 +203,10 @@ func HandlerForTransactional(reg prometheus.TransactionalGatherer, opts HandlerO
 
 		defer closeWriter()
 
-		rsp.Header().Set(contentEncodingHeader, encodingHeader)
-
+		// Set Content-Encoding only when data is compressed
+		if encodingHeader != string(Identity) {
+			rsp.Header().Set(contentEncodingHeader, encodingHeader)
+		}
 		enc := expfmt.NewEncoder(w, contentType)
 
 		// handleError handles the error according to opts.ErrorHandling
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 47b9d7a..752e890 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -38,7 +38,7 @@ github.com/munnerz/goautoneg
 # github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f
 ## explicit
 github.com/mwitkow/go-conntrack
-# github.com/prometheus/client_golang v1.20.1
+# github.com/prometheus/client_golang v1.20.2
 ## explicit; go 1.20
 github.com/prometheus/client_golang/internal/github.com/golang/gddo/httputil
 github.com/prometheus/client_golang/internal/github.com/golang/gddo/httputil/header