2 files changed, 13 insertions, 1 deletions
diff --git a/src/feature/nodelist/nodelist.c b/src/feature/nodelist/nodelist.c
index 6ae8d2bcb1..bd80fc1b4b 100644
--- a/src/feature/nodelist/nodelist.c
+++ b/src/feature/nodelist/nodelist.c
@@ -1106,7 +1106,7 @@ node_ed25519_id_matches(const node_t *node, const ed25519_public_key_t *id)
 /** Dummy object that should be unreturnable.  Used to ensure that
  * node_get_protover_summary_flags() always returns non-NULL. */
 static const protover_summary_flags_t zero_protover_flags = {
-  0,0,0,0,0,0,0,0
+  0,0,0,0,0,0,0,0,0
 };
 
 /** Return the protover_summary_flags for a given node. */
@@ -1166,6 +1166,17 @@ node_supports_ed25519_hs_intro(const node_t *node)
   return node_get_protover_summary_flags(node)->supports_ed25519_hs_intro;
 }
 
+/** Return true iff <b>node</b> supports the DoS ESTABLISH_INTRO cell
+ * extenstion. */
+int
+node_supports_establish_intro_dos_extension(const node_t *node)
+{
+  tor_assert(node);
+
+  return node_get_protover_summary_flags(node)->
+                           supports_establish_intro_dos_extension;
+}
+
 /** Return true iff <b>node</b> supports to be a rendezvous point for hidden
  * service version 3 (HSRend=2). */
 int
diff --git a/src/feature/nodelist/nodelist.h b/src/feature/nodelist/nodelist.h
index 84ab5f7a54..af144c197f 100644
--- a/src/feature/nodelist/nodelist.h
+++ b/src/feature/nodelist/nodelist.h
@@ -76,6 +76,7 @@ int node_supports_ed25519_link_authentication(const node_t *node,
 int node_supports_v3_hsdir(const node_t *node);
 int node_supports_ed25519_hs_intro(const node_t *node);
 int node_supports_v3_rendezvous_point(const node_t *node);
+int node_supports_establish_intro_dos_extension(const node_t *node);
 const uint8_t *node_get_rsa_id_digest(const node_t *node);
 smartlist_t *node_get_link_specifier_smartlist(const node_t *node,
                                                bool direct_conn);