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-rw-r--r--weed/s3api/s3_constants/header.go6
1 files changed, 6 insertions, 0 deletions
diff --git a/weed/s3api/s3_constants/header.go b/weed/s3api/s3_constants/header.go
index b4c91fa71..86863f257 100644
--- a/weed/s3api/s3_constants/header.go
+++ b/weed/s3api/s3_constants/header.go
@@ -57,6 +57,12 @@ const (
AmzObjectLockRetainUntilDate = "X-Amz-Object-Lock-Retain-Until-Date"
AmzObjectLockLegalHold = "X-Amz-Object-Lock-Legal-Hold"
+ // S3 conditional headers
+ IfMatch = "If-Match"
+ IfNoneMatch = "If-None-Match"
+ IfModifiedSince = "If-Modified-Since"
+ IfUnmodifiedSince = "If-Unmodified-Since"
+
// S3 conditional copy headers
AmzCopySourceIfMatch = "X-Amz-Copy-Source-If-Match"
AmzCopySourceIfNoneMatch = "X-Amz-Copy-Source-If-None-Match"