error-notify: Notify listeners upon IKE retransmit

Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>

src/libcharon/plugins/error_notify/error_notify_listener.c

@@ -83,6 +83,11 @@ METHOD(listener_t, alert, bool,
 			snprintf(msg.str, sizeof(msg.str), "parsing IKE message from "
 					 "%#H failed", message->get_source(message));
 			break;
+		case ALERT_RETRANSMIT_SEND:
+			msg.type = htonl(ERROR_NOTIFY_RETRANSMIT_SEND);
+			snprintf(msg.str, sizeof(msg.str), "IKE message retransmission "
+					 "number %u", va_arg(args, u_int));
+			break;
 		case ALERT_RETRANSMIT_SEND_TIMEOUT:
 			msg.type = htonl(ERROR_NOTIFY_RETRANSMIT_SEND_TIMEOUT);
 			snprintf(msg.str, sizeof(msg.str),

src/libcharon/plugins/error_notify/error_notify_msg.h

@@ -48,6 +48,7 @@ enum {
 	ERROR_NOTIFY_CERT_EXPIRED = 17,
 	ERROR_NOTIFY_CERT_REVOKED = 18,
 	ERROR_NOTIFY_NO_ISSUER_CERT = 19,
+	ERROR_NOTIFY_RETRANSMIT_SEND = 20,
 };
 
 /**