From e92bb181415ab6b90b85498a52f669bc54b9c849 Mon Sep 17 00:00:00 2001
From: "Bala.FA" <bala@minio.io>
Date: Sat, 17 Aug 2024 06:55:43 +0530
Subject: [PATCH] SignV4: trim leading/trailing spaces in header value

Signed-off-by: Bala.FA <bala@minio.io>
---
 api/src/main/java/io/minio/Signer.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/api/src/main/java/io/minio/Signer.java b/api/src/main/java/io/minio/Signer.java
index 4752a76d6..26d137005 100644
--- a/api/src/main/java/io/minio/Signer.java
+++ b/api/src/main/java/io/minio/Signer.java
@@ -134,12 +134,13 @@ private void setCanonicalHeaders(Set<String> ignored_headers) {
         // https://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
         // * Header having multiple values should be converted to comma separated values.
         // * Multi-spaced value of header should be trimmed to single spaced value.
+        // * Trim leading/trailing spaces in header value.
         this.canonicalHeaders.put(
             signedHeader,
             headers.values(name).stream()
                 .map(
                     value -> {
-                      return value.replaceAll("( +)", " ");
+                      return value.replaceAll("( +)", " ").trim();
                     })
                 .collect(Collectors.joining(",")));
       }