openssl/openssl-1.1.1-alpn-cb.patch

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commit 9e885a707d604e9528b5491b78fb9c00f41193fc
Author: Tomas Mraz <tmraz@fedoraproject.org>
Date: Thu Mar 26 15:59:00 2020 +0100
s_server: Properly indicate ALPN protocol mismatch
Return SSL_TLSEXT_ERR_ALERT_FATAL from alpn_select_cb so that
an alert is sent to the client on ALPN protocol mismatch.
Fixes: #2708
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11415)
diff --git a/apps/s_server.c b/apps/s_server.c
index bcc83e562c..591c6c19c5 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -707,7 +707,7 @@ static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen,
if (SSL_select_next_proto
((unsigned char **)out, outlen, alpn_ctx->data, alpn_ctx->len, in,
inlen) != OPENSSL_NPN_NEGOTIATED) {
- return SSL_TLSEXT_ERR_NOACK;
+ return SSL_TLSEXT_ERR_ALERT_FATAL;
}
if (!s_quiet) {