From e2c418e94bb6264e63efa3b44c023d19d646b767 Mon Sep 17 00:00:00 2001
From: Willy Tarreau <w@1wt.eu>
Date: Fri, 14 Sep 2018 17:32:05 +0200
Subject: [PATCH] MINOR: http: add http_hdr_del() to remove a header from a
 list

This one removes all occurrences of the specified header field name from
a complete list and returns the new count.
---
 include/common/http-hdr.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/common/http-hdr.h b/include/common/http-hdr.h
index a0bb341bbb..8cc7ee7830 100644
--- a/include/common/http-hdr.h
+++ b/include/common/http-hdr.h
@@ -47,4 +47,21 @@ static inline void http_set_hdr(struct http_hdr *hdr, const struct ist n, const
 	hdr->v = v;
 }
 
+/* removes all occurrences of header name <n> in list <hdr> and returns the new count. The
+ * list must be terminated by the empty header.
+ */
+static inline int http_del_hdr(struct http_hdr *hdr, const struct ist n)
+{
+	int src = 0, dst = 0;
+
+	do {
+		if (!isteqi(hdr[src].n, n)) {
+			if (src != dst)
+				hdr[dst] = hdr[src];
+			dst++;
+		}
+	} while (hdr[src++].n.len);
+
+	return dst;
+}
 #endif /* _COMMON_HTTP_HDR_H */