From: Willy Tarreau <w@1wt.eu>
Date: Sun, 3 Dec 2017 17:41:31 +0000 (+0100)
Subject: BUG/MINOR: h2: the TE header if present may only contain trailers
X-Git-Tag: v1.9-dev1~619
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8d2ac75e89362637f3c21a2710f527355c86abe;p=thirdparty%2Fhaproxy.git

BUG/MINOR: h2: the TE header if present may only contain trailers

h2spec reports this issue which has no side effect for now, but is
better cleared.

To backport to 1.8.
---

diff --git a/src/h2.c b/src/h2.c
index 3c580d1968..41565c04bb 100644
--- a/src/h2.c
+++ b/src/h2.c
@@ -179,6 +179,9 @@ int h2_make_h1_request(struct http_hdr *list, char *out, int osize)
 		if (isteq(list[idx].n, ist("host")))
 			fields |= H2_PHDR_FND_HOST;
 
+		if (isteq(list[idx].n, ist("te")) && !isteq(list[idx].v, ist("trailers")))
+			goto fail;
+
 		/* cookie requires special processing at the end */
 		if (isteq(list[idx].n, ist("cookie"))) {
 			list[idx].n.len = -1;