From 31127000e16c18389129546b9aa652de565683fb Mon Sep 17 00:00:00 2001
From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Mon, 1 Jan 2024 14:14:39 +0100
Subject: [PATCH] actively ping IRC connection

---
 app/TwitchBot/IRCMessage.php | 11 +++++++++++
 app/TwitchBot/TwitchBot.php  | 22 ++++++++++++++++++++--
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/app/TwitchBot/IRCMessage.php b/app/TwitchBot/IRCMessage.php
index c730ef7..d127f9f 100644
--- a/app/TwitchBot/IRCMessage.php
+++ b/app/TwitchBot/IRCMessage.php
@@ -139,6 +139,13 @@ class IRCMessage {
 		return $msg;
 	}
 
+	public static function ping($token = 'localhorsttv') {
+		$msg = new IRCMessage();
+		$msg->command = 'PING';
+		$msg->params[] = $token;
+		return $msg;
+	}
+
 	public static function privmsg($target, $message) {
 		$msg = new IRCMessage();
 		$msg->command = 'PRIVMSG';
@@ -169,6 +176,10 @@ class IRCMessage {
 		return $this->command == 'PING';
 	}
 
+	public function isPong() {
+		return $this->command == 'PONG';
+	}
+
 	public function isPrivMsg() {
 		return $this->command == 'PRIVMSG';
 	}
diff --git a/app/TwitchBot/TwitchBot.php b/app/TwitchBot/TwitchBot.php
index ddc51fe..a45de87 100644
--- a/app/TwitchBot/TwitchBot.php
+++ b/app/TwitchBot/TwitchBot.php
@@ -26,6 +26,7 @@ class TwitchBot {
 		$this->connector = new Connector();
 		$this->connect();
 		$this->listenCommands();
+		$this->startPinger();
 	}
 
 	public function getLogger() {
@@ -86,8 +87,8 @@ class TwitchBot {
 		$this->ready = false;
 		$this->logger->info('websocket connection closed: '.$reason.' ['.$op.']');
 		if (!$this->shutting_down) {
-			$this->logger->info('reconnecting in 10 seconds');
-			Loop::addTimer(10, [$this, 'connect']);
+			$this->logger->info('reconnecting in 5 seconds');
+			Loop::addTimer(5, [$this, 'connect']);
 		}
 	}
 
@@ -97,6 +98,7 @@ class TwitchBot {
 
 
 	public function handleIRCMessage(IRCMessage $msg) {
+		$this->last_contact = time();
 		if ($msg->isPrivMsg()) {
 			$this->handlePrivMsg($msg);
 			return;
@@ -105,6 +107,9 @@ class TwitchBot {
 			$this->sendIRCMessage($msg->makePong());
 			return;
 		}
+		if ($msg->isPong()) {
+			return;
+		}
 		if ($msg->isNotice() && $msg->getText() == 'Login authentication failed') {
 			$this->logger->notice('login failed, refreshing access token');
 			$this->token->refresh();
@@ -171,13 +176,24 @@ class TwitchBot {
 				}
 			}
 		});
+	}
 
+	private function startPinger() {
+		$this->getLoop()->addPeriodicTimer(15, function () {
+			if (!$this->ready) return;
+			if (time() - $this->last_contact < 60) return;
+			try {
+				$this->sendIRCMessage(IRCMessage::ping());
+			} catch (\Exception $e) {
+			}
+		});
 	}
 
 	public function sendIRCMessage(IRCMessage $msg) {
 		$irc_message = $msg->encode();
 		$this->logger->info('sending IRC message '.$irc_message);
 		$this->ws->send($irc_message);
+		$this->last_contact = time();
 	}
 
 
@@ -190,6 +206,8 @@ class TwitchBot {
 	private $ready = false;
 	private $shutting_down = false;
 
+	private $last_contact;
+
 }
 
 ?>
-- 
2.39.2