X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fprotocol_key.c;h=8a12b56874b4580cb109ca59295f1495197a296a;hb=c46bdbde18629f0a0613c776c13a79fea0ec6093;hp=8cbec1be28a0883c79d9aba8fd77d709f0529238;hpb=04fc19112da5e7fcefefcf6e490987cdcfb6f620;p=tinc

diff --git a/src/protocol_key.c b/src/protocol_key.c
index 8cbec1be..8a12b568 100644
--- a/src/protocol_key.c
+++ b/src/protocol_key.c
@@ -178,6 +178,7 @@ static bool req_key_ext_h(connection_t *c, const char *request, node_t *from, in
 			from->last_req_key = now.tv_sec;
 			sptps_start(&from->sptps, from, false, true, myself->connection->ecdsa, from->ecdsa, label, sizeof label, send_sptps_data, receive_sptps_record);
 			sptps_receive_data(&from->sptps, buf, len);
+			send_mtu_info(myself, from, MTU);
 			return true;
 		}
 
@@ -194,6 +195,7 @@ static bool req_key_ext_h(connection_t *c, const char *request, node_t *from, in
 				return true;
 			}
 			sptps_receive_data(&from->sptps, buf, len);
+			send_mtu_info(myself, from, MTU);
 			return true;
 		}
 
@@ -236,6 +238,13 @@ bool req_key_h(connection_t *c, const char *request) {
 		return true;
 	}
 
+	/* If this is a SPTPS packet, see if sending UDP info helps.
+	   Note that we only do this if we're the destination or the static relay;
+	   otherwise every hop would initiate its own UDP info message, resulting in elevated chatter. */
+
+	if(experimental && (reqno == REQ_KEY || reqno == REQ_SPTPS) && to->via == myself)
+		send_udp_info(myself, from);
+
 	/* Check if this key request is for us */
 
 	if(to == myself) {                      /* Yes */
@@ -408,6 +417,8 @@ bool ans_key_h(connection_t *c, const char *request) {
 			}
 		}
 
+		send_mtu_info(myself, from, MTU);
+
 		return true;
 	}