haproxy/reg-tests/connection/tcp_to_http_upgrade.vtc
Christopher Faulet da93802ffc BUG/MEDIUM: mux-h1: Don't release H1 stream upgraded from TCP on error
When an error occurred during the request parsing, the H1 multiplexer is
responsible to sent a response to the client and to release the H1 stream
and the H1 connection. In HTTP mode, it is not an issue because at this
stage the H1 connection is in embryonic state. Thus it can be released
immediately.

However, it is a problem if the connection was first upgraded from a TCP
connection. In this case, a stream-connector is attached. The H1 stream is
not orphan. Thus it must not be released at this stage. It must be detached
first. Otherwise a BUG_ON() is triggered in h1s_destroy().

So now, the H1S is destroyed on early errors but only if the H1C is in
embryonic state.

This patch may be related to #1966. It must be backported to 2.7.
2022-12-15 09:51:31 +01:00

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varnishtest "Test connection upgrades from TCP to HTTP"
#REQUIRE_VERSION=2.4
feature ignore_unknown_macro
server s1 {
# TCP > H1 using "switch-mode http"
rxreq
expect req.http.x-stream-mode == tcp
expect req.http.x-name == fe1
txresp
rxreq
expect req.http.x-stream-mode == http
expect req.http.x-name == fe1
txresp
accept
# TCP > H1 using backend mode
rxreq
expect req.http.x-name == be
txresp
rxreq
expect req.http.x-name == be
txresp
accept
# TCP > H2 using "switch-mode http"
rxreq
expect req.http.x-stream-mode == http
expect req.http.x-name == fe1
txresp
rxreq
expect req.http.x-stream-mode == http
expect req.http.x-name == fe1
txresp
# To be sure no other request was received
accept
rxreq
txresp
} -start
haproxy h1 -conf {
frontend fe1
mode tcp
bind "fd@${fe1h1}"
tcp-request inspect-delay 1s
tcp-request content set-var(req.stream_mode) internal.strm.is_htx,iif(http,tcp)
tcp-request content switch-mode http if HTTP
tcp-request content reject # never reached
http-request set-header x-stream-mode %[var(req.stream_mode)]
http-request set-header x-name %[fe_name]
default_backend be
frontend fe2
mode tcp
bind "fd@${fe2h1}"
default_backend be
backend be
mode http
http-request set-header x-name %[be_name] unless { req.fhdr(x-name) -m found }
server s1 ${s1_addr}:${s1_port}
listen li1
mode http
bind "fd@${li1h1}"
server s1 ${h1_fe1h1_addr}:${h1_fe1h1_port} proto h2
listen err1
mode http
bind "fd@${err1h1}" proto h1
server s1 ${s1_addr}:${s1_port}
listen err2
mode tcp
bind "fd@${err2h1}"
tcp-request inspect-delay 1s
tcp-request content switch-mode http proto h1 if HTTP
tcp-request content reject # never reached
default_backend be
listen err3
mode tcp
bind "fd@${err3h1}" proto none
tcp-request inspect-delay 1s
tcp-request content switch-mode http if HTTP
tcp-request content reject # never reached
default_backend be
} -start
# TCP > H1 using "switch-mode http"
client c1 -connect ${h1_fe1h1_sock} {
txreq
rxresp
expect resp.status == 200
txreq
rxresp
expect resp.status == 200
} -run
# TCP > H1 using backend mode
client c2 -connect ${h1_fe2h1_sock} {
txreq
rxresp
expect resp.status == 200
txreq
rxresp
expect resp.status == 200
} -run
# TCP > H2 using "switch-mode http"
client c3 -connect ${h1_li1h1_sock} {
txreq
rxresp
expect resp.status == 200
txreq
rxresp
expect resp.status == 200
} -run
# implicit H1 > H2 upgrade not performed
client c_err1 -connect ${h1_err1h1_sock} {
send "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
rxresp
expect resp.status == 400
} -run
# TCP > H1 > H2 upgrade not allowed
client c_err2 -connect ${h1_err2h1_sock} {
send "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
rxresp
expect resp.status == 400
} -run
# TCP > HTTP upgrade not allowed
client c_err3 -connect ${h1_err3h1_sock} {
txreq
expect_close
} -run
# TCP > HTTP upgrade with a parsing error
client c_err4 -connect ${h1_fe2h1_sock} {
send "GET / BAD-VERSION\r\n\r\n"
rxresp
expect resp.status == 400
} -run
# To be sure no other request was received by the server
client c_end -connect ${s1_sock} {
txreq
rxresp
} -run