Replace deadline_timer with system_timer

Co-authored-by: arkq <6979798+arkq@users.noreply.github.com>

Author: Copilot

src/udp2tcp.cpp

@@ -5,6 +5,7 @@
 #include "udp2tcp.h"
 
 #include <array>
+#include <chrono>
 #include <functional>
 #include <memory>
 #include <regex>
@@ -118,9 +119,9 @@ auto udp2tcp::do_app_keep_alive(bool init) -> void {
 	if (m_app_keep_alive_idle_time == 0)
 		return;
 
-	auto time = boost::posix_time::seconds(m_app_keep_alive_idle_time);
+	auto time = std::chrono::seconds(m_app_keep_alive_idle_time);
 	// Set or update timer and check whether the previous handler was cancelled
-	if (m_app_keep_alive_timer.expires_from_now(time) == 0 && !init)
+	if (m_app_keep_alive_timer.expires_after(time) == 0 && !init)
 		return;
 
 	LOG(trace) << "app-keepalive [" << to_string() << "]: idle=" << m_app_keep_alive_idle_time;
@@ -216,8 +217,8 @@ auto udp2tcp::do_recv(std::size_t rlen, bool ctrl) -> void {
 	    [this, ctrl](const auto & ec, size_t length) { do_recv_handler(ec, length, ctrl); });
 }
 
-auto udp2tcp::do_recv_handler(const boost::system::error_code & ec, size_t length, bool ctrl)
-    -> void {
+auto udp2tcp::do_recv_handler(const boost::system::error_code & ec, size_t length,
+                              bool ctrl) -> void {
 
 	if (ec) {
 		if (ec == asio::error::operation_aborted)

src/udp2tcp.h

@@ -82,7 +82,7 @@ class udp2tcp {
 	utils::transport m_transport = utils::transport::raw;
 	// Application keep-alive idle time in seconds, 0 to disable
 	int m_app_keep_alive_idle_time = 0;
-	asio::deadline_timer m_app_keep_alive_timer;
+	asio::system_timer m_app_keep_alive_timer;
 	// TCP keep-alive idle time in seconds, 0 to disable
 	int m_tcp_keep_alive_idle_time = 0;
 	// Buffers for sending and receiving data