# This reg-test is uses to test respect of the websocket protocol according to
# rfc6455.
#
# In particular, a request/response without a websocket key must be rejected by
# haproxy. Note that in the tested case (h1 on both sides), haproxy does not
# validate the key of the server but only checks its presence.
#
# For the case h2 client/h1 server, haproxy would add the key and validates it.
# However, there is no way to check this case quickly at the moment using vtest.

varnishtest "WebSocket test"

feature ignore_unknown_macro

# valid websocket server
server s1 {
	rxreq
	expect req.method == "GET"
	expect req.http.connection == "upgrade"
	expect req.http.upgrade == "websocket"
	expect req.http.sec-websocket-key == "dGhlIHNhbXBsZSBub25jZQ=="

	txresp \
	  -status 101 \
	  -hdr "connection: upgrade" \
	  -hdr "upgrade: websocket" \
	  -hdr "sec-websocket-accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
} -repeat 2 -start

# non-conformant server: no websocket key
server s2 {
	rxreq
	expect req.method == "GET"
	expect req.http.connection == "upgrade"
	expect req.http.upgrade == "websocket"

	txresp \
	  -status 101 \
	  -hdr "connection: upgrade" \
	  -hdr "upgrade: websocket"
} -start

# haproxy instance used as a server
# generate a http/1.1 websocket response with the valid key
haproxy hap_srv -conf {
	defaults
	mode http
	${no-htx} option http-use-htx
	timeout connect 1s
	timeout client  1s
	timeout server  1s

	listen fe1
	bind "fd@${fe1}"

	# reject if the request does not contains a websocket key
	acl ws_handshake hdr(sec-websocket-key) -m found
	http-request reject unless ws_handshake

	# return a valid websocket handshake response
	capture request header sec-websocket-key len 128
	http-request return status 200 hdr connection upgrade hdr upgrade websocket hdr sec-websocket-accept "%[capture.req.hdr(0),concat(258EAFA5-E914-47DA-95CA-C5AB0DC85B11,,),sha1,base64]"
	http-after-response set-status 101 if { status eq 200 }
} -start

# haproxy instance used as a server
# generate a http/1.1 websocket response with an invalid key
haproxy hap_srv_bad_key -conf {
	defaults
	mode http
	${no-htx} option http-use-htx
	timeout connect 1s
	timeout client  1s
	timeout server  1s

	listen fe1
	bind "fd@${fe1}"

	# reject if the request does not contains a websocket key
	acl ws_handshake hdr(sec-websocket-key) -m found
	http-request reject unless ws_handshake

	# return an invalid websocket handshake response
	capture request header sec-websocket-key len 128
	http-request return status 200 hdr connection upgrade hdr upgrade websocket hdr sec-websocket-accept "invalid_key"
	http-after-response set-status 101 if { status eq 200 }
} -start

haproxy hap -conf {
	defaults
	mode http
	${no-htx} option http-use-htx
	timeout connect 1s
	timeout client  1s
	timeout server  1s

	listen fe1
	bind "fd@${fe1}"
	server s1 ${s1_addr}:${s1_port}

	listen fe2
	bind "fd@${fe2}"
	server s2 ${s2_addr}:${s2_port}

	listen fe3
	bind "fd@${fe3}" proto h2
	server hap_srv ${hap_srv_fe1_addr}:${hap_srv_fe1_port}

	listen fe4
	bind "fd@${fe4}" proto h2
	server hap_srv_bad_key ${hap_srv_bad_key_fe1_addr}:${hap_srv_bad_key_fe1_port}
} -start

# standard request
client c1 -connect ${hap_fe1_sock} {
	txreq \
	  -req "GET" \
	  -url "/" \
	  -hdr "host: 127.0.0.1" \
	  -hdr "connection: upgrade" \
	  -hdr "upgrade: websocket" \
	  -hdr "sec-websocket-key: dGhlIHNhbXBsZSBub25jZQ=="
	rxresp
	expect resp.status == 101
	expect resp.http.connection == "upgrade"
	expect resp.http.upgrade == "websocket"
	expect resp.http.sec-websocket-accept == "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
} -run

# missing websocket key
client c2 -connect ${hap_fe1_sock} {
	txreq \
	  -req "GET" \
	  -url "/" \
	  -hdr "host: 127.0.0.1" \
	  -hdr "connection: upgrade" \
	  -hdr "upgrade: websocket"

	rxresp
	expect resp.status == 400
} -run

# missing key on server side
client c3 -connect ${hap_fe2_sock} {
	txreq \
	  -req "GET" \
	  -url "/" \
	  -hdr "host: 127.0.0.1" \
	  -hdr "connection: upgrade" \
	  -hdr "upgrade: websocket" \
	  -hdr "sec-websocket-key: dGhlIHNhbXBsZSBub25jZQ=="

	rxresp
	expect resp.status == 502
} -run

# connect with http/2 on a http/1.1 websocket server
# the key must be provided by haproxy
client c4 -connect ${hap_fe3_sock} {
	txpri
	stream 0 {
		txsettings
		rxsettings
		txsettings -ack
		rxsettings
		expect settings.ack == true
	} -run

	stream 1 {
		txreq \
		  -req "CONNECT" \
		  -scheme "http" \
		  -url "/" \
		  -hdr ":authority" "127.0.0.1" \
		  -hdr ":protocol" "websocket"

		rxhdrs
		expect resp.status == 200
	} -run
} -run

# connect with http/2 on a http/1.1 websocket server
# however, the server will respond with an invalid key
# haproxy is responsible to reject the request and returning a 502 to the client
client c5 -connect ${hap_fe4_sock} {
	txpri
	stream 0 {
		txsettings
		rxsettings
		txsettings -ack
		rxsettings
		expect settings.ack == true
	} -run

	stream 1 {
		txreq \
		  -req "CONNECT" \
		  -scheme "http" \
		  -url "/" \
		  -hdr ":authority" "127.0.0.1" \
		  -hdr ":protocol" "websocket"

		rxhdrs
		expect resp.status == 502
	} -run
} -run