Merge pull request #2339 from spikefishjohn/patch-2

Update telnet_server.py
GNS3 · Jan 24, 2024 · 385fffe · 385fffe
2 parents 85fd3ef + ac86717
commit 385fffe
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/gns3server/utils/asyncio/telnet_server.py b/gns3server/utils/asyncio/telnet_server.py
@@ -190,6 +190,11 @@ async def run(self, network_reader, network_writer):
         sock = network_writer.get_extra_info("socket")
         sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
         sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+        # 60 sec keep alives, close tcp session after 4 missed
+        # Will keep a firewall from aging out telnet console.
+        writer_sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, 60)
+        writer_sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, 10)
+        writer_sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, 4)
         #log.debug("New connection from {}".format(sock.getpeername()))
 
         # Keep track of connected clients