Common tree insert function for QUIC and UDP connections.

Previously, ngx_udp_rbtree_insert_value() was used for plain UDP and
ngx_quic_rbtree_insert_value() was used for QUIC.  Because of this it was
impossible to initialize connection tree in ngx_create_listening() since
this function is not aware what kind of listening it creates.

Now ngx_udp_rbtree_insert_value() is used for both QUIC and UDP.  To make
is possible, a generic key field is added to ngx_udp_connection_t.  It keeps
client address for UDP and connection ID for QUIC.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/event/ngx_event_udp.h b/src/event/ngx_event_udp.h
index d7a64ee03..e5ddf1b31 100644
--- a/src/event/ngx_event_udp.h
+++ b/src/event/ngx_event_udp.h
@@ -27,6 +27,7 @@ struct ngx_udp_connection_s {
     ngx_rbtree_node_t   node;
     ngx_connection_t   *connection;
     ngx_buf_t          *buffer;
+    ngx_str_t           key;
 };