Adding upstream version 2.6.12.upstream/2.6.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 880 insertions, 0 deletions

diff --git a/reg-tests/compression/basic.vtc b/reg-tests/compression/basic.vtc
new file mode 100644
index 0000000..76ad43d
--- /dev/null
+++ b/reg-tests/compression/basic.vtc
@@ -0,0 +1,378 @@
+varnishtest "Basic compression test"
+
+#REQUIRE_VERSION=1.9
+#REQUIRE_OPTION=ZLIB|SLZ
+
+feature ignore_unknown_macro
+
+server s1 {
+        # client c1 - request 1
+        rxreq
+        expect req.url == "/c1.1"
+        expect req.http.accept-encoding == "<undef>"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        # client c1 - request 2
+        rxreq
+        expect req.url == "/c1.2"
+        expect req.http.user-agent == "Mozilla/4"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        # client c1 - request 3
+        rxreq
+        expect req.url == "/c1.3"
+        expect req.proto == "HTTP/1.0"
+        expect req.http.accept-encoding == "gzip"
+        txresp -bodylen 100
+
+        # client c1 - request 4
+        rxreq
+        expect req.url == "/c1.4"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -proto "HTTP/1.0" \
+          -hdr "Connection: keep-alive" \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        # client c1 - request 5
+        rxreq
+        expect req.url == "/c1.5"
+        expect req.method == "HEAD"
+        expect req.http.accept-encoding == "gzip"
+        txresp -nolen \
+          -hdr "Content-Length: 100" \
+          -hdr "Content-Type: text/plain" \
+
+        # client c1 - request 6
+        rxreq
+        expect req.url == "/c1.6"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -status 400 \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        # client c1 - request 7
+        rxreq
+        expect req.url == "/c1.7"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "Content-Encoding: something" \
+          -body "FOO"
+
+        # client c1 - request 8
+        rxreq
+        expect req.url == "/c1.8"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "Cache-Control: no-transform" \
+          -bodylen 100
+
+        # client c1 - request 9
+        rxreq
+        expect req.url == "/c1.9"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/css" \
+          -bodylen 100
+
+        # client c1 - request 10
+        rxreq
+        expect req.url == "/c1.10"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: multipart/mixed; boundary=\"aaa\"" \
+          -bodylen 100
+
+        # Close the connection with HAProxy and wait for a new one
+        # (C1 has finished and C2 will start)
+        accept
+
+        # client c2 - request 1
+        rxreq
+        expect req.url == "/c2.1"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        # client c2 - request 2
+        rxreq
+        expect req.url == "/c2.2"
+        expect req.http.accept-encoding == "gzip"
+        txresp  -nolen \
+          -hdr "Content-Type: text/plain" \
+          -hdr "Transfer-Encoding: chunked"
+        chunkedlen 1
+        chunkedlen 1
+        chunkedlen 2
+        chunkedlen 3
+        chunkedlen 5
+        chunkedlen 8
+        chunkedlen 13
+        chunkedlen 21
+        chunkedlen 34
+        chunkedlen 55
+        chunkedlen 89
+        chunkedlen 144
+        chunkedlen 233
+        chunkedlen 0
+
+        # Close the connection with HAProxy and wait for a new one
+        # (C2 has finished and C3 will start)
+        accept
+
+        # client c3 - request 1
+        rxreq
+        expect req.url == "/c3.1"
+        expect req.http.accept-encoding == "<undef>"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 50000
+
+        # client c3 - request 2
+        rxreq
+        expect req.url == "/c3.2"
+        expect req.http.accept-encoding == "<undef>"
+        txresp  -nolen \
+          -hdr "Content-Type: text/plain" \
+          -hdr "Transfer-Encoding: chunked"
+        chunkedlen 1000
+        chunkedlen 1000
+        chunkedlen 1000
+        chunkedlen 1000
+        chunkedlen 1000
+        chunkedlen 5000
+        chunkedlen 10000
+        chunkedlen 30000
+        chunkedlen 0
+
+        # Close the connection with HAProxy and wait for a new one
+        # (C3 has finished and C4 will start)
+        accept
+
+        # client c4 - request 1
+        rxreq
+        expect req.url == "/c4.1"
+        expect req.http.accept-encoding == "<undef>"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        # client c4 - request 2
+        rxreq
+        expect req.url == "/c4.2"
+        expect req.http.accept-encoding == "<undef>"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+} -start
+
+
+haproxy h1 -conf {
+    defaults
+        mode http
+        timeout connect "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout client  "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout server  "${HAPROXY_TEST_TIMEOUT-5s}"
+
+    frontend fe-gzip
+        bind "fd@${fe_gzip}"
+        default_backend be-gzip
+
+    frontend fe-identity
+        bind "fd@${fe_identity}"
+        default_backend be-identity
+
+    frontend fe-gzip-deflate
+        bind "fd@${fe_gzip_deflate}"
+        default_backend be-gzip-defalte
+
+    backend be-gzip
+        compression algo gzip
+        compression type text/html text/plain
+        server www ${s1_addr}:${s1_port}
+
+    backend be-identity
+        compression algo identity
+        server www ${s1_addr}:${s1_port}
+
+    backend be-gzip-defalte
+        compression algo gzip deflate
+	compression offload
+        server www ${s1_addr}:${s1_port}
+
+} -start
+
+# No compression expected because not supported by the client or because
+# something in the request or response headers forbids it.
+client c1 -connect ${h1_fe_gzip_sock} {
+        # 1. no "Accept-Encoding header"
+        txreq -url "/c1.1"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.bodylen == 100
+
+        # 2. Buggy User-Agent
+        txreq  -url "/c1.2" \
+          -hdr "Accept-Encoding: gzip" \
+          -hdr "User-Agent: Mozilla/4"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.bodylen == 100
+
+        # 3. HTTP/1.0 request
+        txreq  -url "/c1.3" \
+          -proto "HTTP/1.0" \
+          -hdr "Accept-Encoding: gzip" \
+          -hdr "Connection: keep-alive"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.bodylen == 100
+
+        # 4. HTTP/1.0 response
+        txreq  -url "/c1.4" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.proto == "HTTP/1.0"
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.bodylen == 100
+
+        # 5. HEAD method
+        txreq -req "HEAD" -url "/c1.5" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp -no_obj
+        expect resp.status == 200
+        expect resp.http.content-length == "100"
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+
+        # 6. Response status code != 20[0-3]
+        txreq -url "/c1.6" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 400
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.bodylen == 100
+
+        # 7. Response alerady compressed by the server (with "Accept-Encoding")
+        txreq -url "/c1.7" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "something"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.bodylen == 3
+        expect resp.body == "FOO"
+
+        # 8. Response with "Cache-Control: no-transform"
+        txreq -url "/c1.8" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.http.cache-control == "no-transform"
+        expect resp.bodylen == 100
+
+        # 9. Response with uncompressable content-type
+        txreq -url "/c1.9" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.http.content-type == "text/css"
+        expect resp.bodylen == 100
+
+        # 10. Response with uncompressable content-type
+        txreq -url "/c1.10" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "<undef>"
+        expect resp.http.content-type == "multipart/mixed; boundary=\"aaa\""
+        expect resp.bodylen == 100
+} -run
+
+# GZIP Compression expected (small body)
+client c2 -connect ${h1_fe_gzip_sock} {
+        # 1. response from the server with a small body with a C-L
+        txreq -url "/c2.1" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.transfer-encoding == "chunked"
+        gunzip
+        expect resp.bodylen == 100
+
+        # 2. response from the server with a small chunked body
+        txreq -url "/c2.2" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.transfer-encoding == "chunked"
+        gunzip
+        expect resp.bodylen == 609
+} -run
+
+# Identity compression expect (Huge body)
+# Identity is used because of a limitation of vtest (the uncompressed body size
+# must be lower than 10 times of the compressed one)
+client c3 -connect ${h1_fe_identity_sock} {
+        # 1. response from the server with a huge body with a C-L
+        txreq -url "/c3.1"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "chunked"
+        expect resp.bodylen == 50000
+
+        # 2. response from the server with a huge chunked body
+        txreq -url "/c3.2"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.transfer-encoding == "chunked"
+        expect resp.bodylen == 50000
+} -run
+
+
+# Compression expected with priority
+client c4 -connect ${h1_fe_gzip_deflate_sock} {
+        # 1. response from the server with a small body with a C-L
+        txreq -url "/c4.1" \
+          -hdr "Accept-Encoding: *;q=0, gzip;q=0.750, deflate;q=0.500"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.transfer-encoding == "chunked"
+
+        # 2. response from the server with a small body with a C-L
+        txreq -url "/c4.2" \
+          -hdr "Accept-Encoding: *;q=0, gzip;q=0.500, deflate;q=0.750"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "deflate"
+        expect resp.http.transfer-encoding == "chunked"
+} -run
diff --git a/reg-tests/compression/common.pem b/reg-tests/compression/common.pem
new file mode 120000
index 0000000..a4433d5
--- /dev/null
+++ b/reg-tests/compression/common.pem
@@ -0,0 +1 @@
+../ssl/common.pem
\ No newline at end of file
diff --git a/reg-tests/compression/etags_conversion.vtc b/reg-tests/compression/etags_conversion.vtc
new file mode 100644
index 0000000..c5684a2
--- /dev/null
+++ b/reg-tests/compression/etags_conversion.vtc
@@ -0,0 +1,231 @@
+varnishtest "Compression converts strong ETags to weak ETags"
+
+#REQUIRE_VERSION=1.9
+#REQUIRE_OPTION=ZLIB|SLZ
+
+feature ignore_unknown_macro
+
+server s1 {
+        rxreq
+        expect req.url == "/strong"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: \"123\"" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/weak"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: W/\"456\"" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/weak-incorrect-quoting"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: \"W/789\"" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/empty-strong"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: \"\"" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/empty-weak"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: W/\"\"" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/invalid1"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: \"invalid" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/invalid2"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: invalid\"" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/invalid3"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: invalid" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/invalid4"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: W/\"invalid" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/invalid5"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: W/invalid\"" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/invalid6"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: W/invalid" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/multiple"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: \"one\"" \
+          -hdr "ETag: \"two\"" \
+          -bodylen 100
+} -start
+
+
+haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
+    defaults
+        mode http
+        timeout connect "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout client  "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout server  "${HAPROXY_TEST_TIMEOUT-5s}"
+
+    frontend fe-gzip
+        bind "fd@${fe_gzip}"
+        default_backend be-gzip
+
+    backend be-gzip
+        compression algo gzip
+        compression type text/html text/plain
+        server www ${s1_addr}:${s1_port}
+} -start
+
+client c1 -connect ${h1_fe_gzip_sock} {
+        txreq -url "/strong" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.etag == "W/\"123\""
+        gunzip
+        expect resp.bodylen == 100
+
+        txreq -url "/weak" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.etag == "W/\"456\""
+        gunzip
+        expect resp.bodylen == 100
+
+        txreq -url "/weak-incorrect-quoting" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.etag == "W/\"W/789\""
+        gunzip
+        expect resp.bodylen == 100
+
+        txreq -url "/empty-strong" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.etag == "W/\"\""
+        gunzip
+        expect resp.bodylen == 100
+
+        txreq -url "/empty-weak" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.etag == "W/\"\""
+        gunzip
+        expect resp.bodylen == 100
+
+        txreq -url "/invalid1" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.etag == "\"invalid"
+        expect resp.bodylen == 100
+
+        txreq -url "/invalid2" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.etag == "invalid\""
+        expect resp.bodylen == 100
+
+        txreq -url "/invalid3" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.etag == "invalid"
+        expect resp.bodylen == 100
+
+        txreq -url "/invalid4" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.etag == "W/\"invalid"
+        expect resp.bodylen == 100
+
+        txreq -url "/invalid5" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.etag == "W/invalid\""
+        expect resp.bodylen == 100
+
+        txreq -url "/invalid6" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.http.etag == "W/invalid"
+        expect resp.bodylen == 100
+
+        txreq -url "/multiple" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "<undef>"
+        expect resp.bodylen == 100
+} -run
diff --git a/reg-tests/compression/lua_validation.lua b/reg-tests/compression/lua_validation.lua
new file mode 100644
index 0000000..2cc874b
--- /dev/null
+++ b/reg-tests/compression/lua_validation.lua
@@ -0,0 +1,19 @@
+
+local data = "abcdefghijklmnopqrstuvwxyz"
+local responseblob = ""
+for i = 1,10000 do
+  responseblob = responseblob .. "\r\n" .. i .. data:sub(1, math.floor(i % 27))
+end
+
+http01applet = function(applet)
+  local response = responseblob
+  applet:set_status(200)
+  applet:add_header("Content-Type", "application/javascript")
+  applet:add_header("Content-Length", string.len(response)*10)
+  applet:start_response()
+  for i = 1,10 do
+    applet:send(response)
+  end
+end
+
+core.register_service("fileloader-http01", "http", http01applet)
diff --git a/reg-tests/compression/lua_validation.vtc b/reg-tests/compression/lua_validation.vtc
new file mode 100644
index 0000000..b10cbd9
--- /dev/null
+++ b/reg-tests/compression/lua_validation.vtc
@@ -0,0 +1,59 @@
+# Checks that compression doesn't cause corruption..
+
+varnishtest "Compression validation"
+#REQUIRE_OPTIONS=ZLIB|SLZ,LUA,OPENSSL
+#REGTEST_TYPE=slow
+
+feature ignore_unknown_macro
+
+haproxy h1 -conf {
+global
+#	log stdout format short daemon
+	lua-load		${testdir}/lua_validation.lua
+
+defaults
+	mode			http
+	log			global
+	option			httplog
+
+frontend main-https
+	bind			"fd@${fe1}" ssl crt ${testdir}/common.pem
+	compression algo gzip
+	compression type text/html text/plain application/json application/javascript
+	compression offload
+	use_backend TestBack  if  TRUE
+
+backend TestBack
+	server	LocalSrv ${h1_fe2_addr}:${h1_fe2_port}
+
+listen fileloader
+	mode http
+	bind "fd@${fe2}"
+	http-request use-service lua.fileloader-http01
+} -start
+
+shell {
+    HOST=${h1_fe1_addr}
+    if [ "${h1_fe1_addr}" = "::1" ] ; then
+        HOST="\[::1\]"
+    fi
+
+    md5=$(command -v md5 || command -v md5sum)
+
+    if [ -z $md5 ] ; then
+        echo "MD5 checksum utility not found"
+        exit 1
+    fi
+
+    expectchecksum="4d9c62aa5370b8d5f84f17ec2e78f483"
+
+    for opt in "" "--limit-rate 300K" "--limit-rate 500K" ; do
+        checksum=$(curl --max-time 15 --compressed -k "https://$HOST:${h1_fe1_port}" $opt | $md5 | cut -d ' ' -f1)
+        if [ "$checksum" != "$expectchecksum" ] ; then
+              echo "Expecting checksum $expectchecksum"
+              echo "Received checksum: $checksum"
+              exit 1;
+        fi
+    done
+
+} -run
diff --git a/reg-tests/compression/vary.vtc b/reg-tests/compression/vary.vtc
new file mode 100644
index 0000000..8219c73
--- /dev/null
+++ b/reg-tests/compression/vary.vtc
@@ -0,0 +1,192 @@
+varnishtest "Compression sets Vary header"
+
+#REQUIRE_VERSION=1.9
+#REQUIRE_OPTION=ZLIB|SLZ
+
+feature ignore_unknown_macro
+
+server s1 {
+        rxreq
+        expect req.url == "/plain/accept-encoding-gzip"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/plain/accept-encoding-invalid"
+        expect req.http.accept-encoding == "invalid"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/plain/accept-encoding-null"
+        expect req.http.accept-encoding == "<undef>"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/html/accept-encoding-gzip"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/html" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/html/accept-encoding-invalid"
+        expect req.http.accept-encoding == "invalid"
+        txresp \
+          -hdr "Content-Type: text/html" \
+          -bodylen 100
+
+
+        rxreq
+        expect req.url == "/html/accept-encoding-null"
+        expect req.http.accept-encoding == "<undef>"
+        txresp \
+          -hdr "Content-Type: text/html" \
+          -bodylen 100
+
+        rxreq
+        expect req.url == "/dup-etag/accept-encoding-gzip"
+        expect req.http.accept-encoding == "gzip"
+        txresp \
+          -hdr "Content-Type: text/plain" \
+          -hdr "ETag: \"123\"" \
+          -hdr "ETag: \"123\"" \
+          -bodylen 100
+} -repeat 2 -start
+
+
+haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
+    defaults
+        mode http
+        timeout connect "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout client  "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout server  "${HAPROXY_TEST_TIMEOUT-5s}"
+
+    frontend fe-gzip
+        bind "fd@${fe_gzip}"
+        default_backend be-gzip
+
+    backend be-gzip
+        compression algo gzip
+        compression type text/plain
+        server www ${s1_addr}:${s1_port}
+
+    frontend fe-nothing
+        bind "fd@${fe_nothing}"
+        default_backend be-nothing
+
+    backend be-nothing
+        server www ${s1_addr}:${s1_port}
+} -start
+
+client c1 -connect ${h1_fe_gzip_sock} {
+        txreq -url "/plain/accept-encoding-gzip" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.content-encoding == "gzip"
+        expect resp.http.vary == "Accept-Encoding"
+        gunzip
+        expect resp.bodylen == 100
+
+        txreq -url "/plain/accept-encoding-invalid" \
+          -hdr "Accept-Encoding: invalid"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/plain/accept-encoding-null"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/html/accept-encoding-gzip" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/html/accept-encoding-invalid" \
+          -hdr "Accept-Encoding: invalid"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/html/accept-encoding-null"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/dup-etag/accept-encoding-gzip" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+} -run
+
+# This Client duplicates c1, against the "nothing" frontend, ensuring no Vary header is ever set.
+client c2 -connect ${h1_fe_nothing_sock} {
+        txreq -url "/plain/accept-encoding-gzip" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/plain/accept-encoding-invalid" \
+          -hdr "Accept-Encoding: invalid"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/plain/accept-encoding-null"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/html/accept-encoding-gzip" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/html/accept-encoding-invalid" \
+          -hdr "Accept-Encoding: invalid"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/html/accept-encoding-null"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+
+        txreq -url "/dup-etag/accept-encoding-gzip" \
+          -hdr "Accept-Encoding: gzip"
+        rxresp
+        expect resp.status == 200
+        expect resp.http.vary == "<undef>"
+        expect resp.bodylen == 100
+} -run