Add initial QUIC support for the msg_callback

At this stage we just support msg_callback on receipt of a datagram.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20914)

1 files changed, 4 insertions, 2 deletions

diff --git a/ssl/ssl_local.h b/ssl/ssl_local.h
index 485b18fb21..be834d8f68 100644
--- a/ssl/ssl_local.h
+++ b/ssl/ssl_local.h
@@ -799,6 +799,9 @@ typedef struct {
 
 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
 
+typedef void (*ossl_msg_cb)(int write_p, int version, int content_type,
+                            const void *buf, size_t len, SSL *ssl, void *arg);
+
 struct ssl_ctx_st {
     OSSL_LIB_CTX *libctx;
 
@@ -939,8 +942,7 @@ struct ssl_ctx_st {
     int read_ahead;
 
     /* callback that allows applications to peek at protocol messages */
-    void (*msg_callback) (int write_p, int version, int content_type,
-                          const void *buf, size_t len, SSL *ssl, void *arg);
+    ossl_msg_cb msg_callback;
     void *msg_callback_arg;
 
     uint32_t verify_mode;