From 1e4329528cb287c78ead68f379f9e99a328abc99 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Wed, 12 Aug 2020 22:57:34 -0400
Subject: [PATCH] Use Timer T1 for timeouts on XID negotiations

When a remote station wishes to connect by sending an XID frame, use
Timer T1 to send an XID response up to the retry count before closing
the socket pending negotiation
---
 src/server.c | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/server.c b/src/server.c
index 1155845..126a563 100644
--- a/src/server.c
+++ b/src/server.c
@@ -1679,7 +1679,8 @@ static int handle_xid(patty_ax25_server *server,
      */
     if ((local = sock_by_addr(server->socks_local,
                               &frame->dest)) != NULL) {
-        int client;
+        int ret,
+            client;
 
         if (local->state != PATTY_AX25_SOCK_LISTENING) {
             goto reply_dm;
@@ -1713,7 +1714,11 @@ static int handle_xid(patty_ax25_server *server,
             goto error_sock_save;
         }
 
-        return patty_ax25_sock_send_xid(remote, PATTY_AX25_FRAME_RESPONSE);
+        ret = patty_ax25_sock_send_xid(remote, PATTY_AX25_FRAME_RESPONSE);
+
+        patty_timer_start(&remote->timer_t1, remote->n_ack);
+
+        return ret;
     }
 
 reply_dm:
@@ -1927,6 +1932,22 @@ static int handle_sock(uint32_t key,
     patty_timer_tick(&sock->timer_t3, &server->elapsed);
 
     switch (sock->state) {
+        case PATTY_AX25_SOCK_PENDING_ACCEPT:
+            if (patty_timer_expired(&sock->timer_t1)) {
+                if (sock->retries) {
+                    int ret = patty_ax25_sock_send_xid(sock, PATTY_AX25_FRAME_RESPONSE);
+
+                    sock->retries--;
+                    patty_timer_start(&sock->timer_t1, sock->n_ack);
+
+                    return ret;
+                } else {
+                    (void)sock_close(server, sock);
+                }
+            }
+
+            return 0;
+
         case PATTY_AX25_SOCK_PENDING_CONNECT:
             if (patty_timer_expired(&sock->timer_t1)) {
                 if (sock->retries) {