# HG changeset patch
# User Roman Arutyunyan <arut@nginx.com>
# Date 1595020084 -10800
# Node ID f537f99b86ee5155b9bc55dc8806275e7694f614
# Parent  b250b515e5b6dfc68172fdb3ad52d341cd225517
QUIC: do not verify the selected ALPN protocol.

The right protocol is selected by the HTTP code.  In the QUIC code only verify
that some protocol was selected and trigger an error otherwise.

diff --git a/src/event/ngx_event_quic.c b/src/event/ngx_event_quic.c
--- a/src/event/ngx_event_quic.c
+++ b/src/event/ngx_event_quic.c
@@ -417,9 +417,7 @@ ngx_quic_add_handshake_data(ngx_ssl_conn
 
         SSL_get0_alpn_selected(c->ssl->connection, &data, &len);
 
-        if (len != NGX_QUIC_ALPN_LEN
-            || ngx_strncmp(data, NGX_QUIC_ALPN_STR, NGX_QUIC_ALPN_LEN) != 0)
-        {
+        if (len == 0) {
             qc->error = 0x100 + SSL_AD_NO_APPLICATION_PROTOCOL;
             qc->error_reason = "unsupported protocol in ALPN extension";
 
diff --git a/src/event/ngx_event_quic.h b/src/event/ngx_event_quic.h
--- a/src/event/ngx_event_quic.h
+++ b/src/event/ngx_event_quic.h
@@ -18,11 +18,6 @@
 #endif
 #define NGX_QUIC_VERSION  (0xff000000 + NGX_QUIC_DRAFT_VERSION)
 
-#define NGX_QUIC_ALPN(s)         NGX_QUIC_ALPN_DRAFT(s)
-#define NGX_QUIC_ALPN_DRAFT(s)   "h3-" #s
-#define NGX_QUIC_ALPN_STR        NGX_QUIC_ALPN(NGX_QUIC_DRAFT_VERSION)
-#define NGX_QUIC_ALPN_LEN        (sizeof(NGX_QUIC_ALPN_STR) - 1)
-
 #define NGX_QUIC_MAX_SHORT_HEADER            25 /* 1 flags + 20 dcid + 4 pn */
 #define NGX_QUIC_MAX_LONG_HEADER             56
     /* 1 flags + 4 version + 2 x (1 + 20) s/dcid + 4 pn + 4 len + token len */