[openwrt/openwrt] unetmsg: ping on tx channel after new incoming connection

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/9bdbe24176ca32925e4aaa3f8650d5eb11fdfc5f

commit 9bdbe24176ca32925e4aaa3f8650d5eb11fdfc5f
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Mon May 12 11:13:44 2025 +0200

    unetmsg: ping on tx channel after new incoming connection
    
    Ensure that stale connections are timed out faster
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 .../unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-remote.uc | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-remote.uc b/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-remote.uc
index cf92a67e13..d905dbd349 100644
--- a/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-remote.uc
+++ b/package/network/services/unetmsg/files/usr/share/ucode/unetmsg/unetmsgd-remote.uc
@@ -191,8 +191,18 @@ function network_check_auth(sock_data, info)
 	sock_data.auth = true;
 	net.rx_channels[sock_data.name] = sock_data;
 	core.dbg(`Incoming connection from ${sock_data.name} established\n`);
-	if (!net.tx_channels[sock_data.name])
+
+	let chan = net.tx_channels[sock_data.name];
+	if (!chan) {
 		net.timer.set(100);
+		return;
+	}
+
+	chan.channel.request({
+		method: "ping",
+		data: {},
+		return: "ignore",
+	});
 }
 
 function network_accept(net, sock, addr)