From 17fc6b5c307623fb94a2b5179e5732119a08704f Mon Sep 17 00:00:00 2001
From: Quentin Carbonneaux
Date: Tue, 10 May 2022 21:17:19 +0200
Subject: ping the server regularly

---
 irc.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/irc.c b/irc.c
index 4255bda..a455991 100644
--- a/irc.c
+++ b/irc.c
@@ -40,6 +40,7 @@ enum {
 	BufSz = 2048,
 	LogSz = 4096,
 	MaxRecons = 10, /* -1 for infinitely many */
+	PingDelay = 6,
 	UtfSz = 4,
 	RuneInvalid = 0xFFFD,
 };
@@ -462,6 +463,8 @@ scmd(char *usr, char *cmd, char *par, char *data)
 		}
 	} else if (!strcmp(cmd, "PING")) {
 		sndf("PONG :%s", data ? data : "(null)");
+	} else if (!strcmp(cmd, "PONG")) {
+		/* nothing */
 	} else if (!strcmp(cmd, "PART")) {
 		if (!pm)
 			return;
@@ -812,7 +815,7 @@ main(int argc, char *argv[])
 	const char *server = SRV;
 	const char *port = PORT;
 	char *err;
-	int o, reconn;
+	int o, reconn, ping;
 
 	signal(SIGPIPE, SIG_IGN);
 	while ((o = getopt(argc, argv, "thk:n:u:s:p:l:")) >= 0)
@@ -859,6 +862,7 @@ main(int argc, char *argv[])
 	chadd(server, 0);
 	sinit(key, nick, user);
 	reconn = 0;
+	ping = 0;
 	while (!quit) {
 		struct timeval t = {.tv_sec = 5};
 		struct Chan *c;
@@ -918,6 +922,13 @@ main(int argc, char *argv[])
 			tgetch();
 			wrefresh(scr.iw);
 		}
+		if (!FD_ISSET(srv.fd, &wfs))
+		if (!FD_ISSET(srv.fd, &rfs))
+		if (outp == outb)
+		if (++ping == PingDelay) {
+			sndf("PING %s", server);
+			ping = 0;
+		}
 	}
 	hangup();
 	while (nch--)
-- 
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