varnishtest "Compression sets Vary header"

#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


server s2 {
        rxreq
        expect req.url == "/vary/no-vary"
        expect req.http.accept-encoding == "gzip"
        txresp \
          -hdr "Content-Type: text/plain" \
          -bodylen 100

        rxreq
        expect req.url == "/vary/accept-encoding"
        expect req.http.accept-encoding == "gzip"
        txresp \
          -hdr "Content-Type: text/plain" \
          -hdr "Vary: Accept-Encoding" \
          -bodylen 100

        rxreq
        expect req.url == "/vary/other"
        expect req.http.accept-encoding == "gzip"
        txresp \
          -hdr "Content-Type: text/plain" \
          -hdr "Vary: Other" \
          -bodylen 100

        rxreq
        expect req.url == "/vary/accept-encoding-and-other"
        expect req.http.accept-encoding == "gzip"
        txresp \
          -hdr "Content-Type: text/plain" \
          -hdr "Vary: Accept-Encoding,Other" \
          -bodylen 100

        rxreq
        expect req.url == "/vary/other-and-accept-encoding"
        expect req.http.accept-encoding == "gzip"
        txresp \
          -hdr "Content-Type: text/plain" \
          -hdr "Vary: Other,Accept-Encoding" \
          -bodylen 100

        rxreq
        expect req.url == "/vary/empty"
        expect req.http.accept-encoding == "gzip"
        txresp \
          -hdr "Content-Type: text/plain" \
          -hdr "Vary: " \
          -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/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}

    frontend fe-vary
        bind "fd@${fe_vary}"
        default_backend be-vary

    backend be-vary
        compression algo gzip
        compression type text/plain
        server www ${s2_addr}:${s2_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


client c3 -connect ${h1_fe_vary_sock} {
        txreq -url "/vary/no-vary" \
          -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 "/vary/accept-encoding" \
          -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 "/vary/other" \
          -hdr "Accept-Encoding: gzip"
        rxresp
        expect resp.status == 200
        expect resp.http.content-encoding == "gzip"
        expect resp.http.vary == "Other,Accept-Encoding"
        gunzip
        expect resp.bodylen == 100

        txreq -url "/vary/accept-encoding-and-other" \
          -hdr "Accept-Encoding: gzip"
        rxresp
        expect resp.status == 200
        expect resp.http.content-encoding == "gzip"
        expect resp.http.vary == "Accept-Encoding,Other"
        gunzip
        expect resp.bodylen == 100

        txreq -url "/vary/other-and-accept-encoding" \
          -hdr "Accept-Encoding: gzip"
        rxresp
        expect resp.status == 200
        expect resp.http.content-encoding == "gzip"
        expect resp.http.vary == "Other,Accept-Encoding"
        gunzip
        expect resp.bodylen == 100

        txreq -url "/vary/empty" \
          -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
} -run