fix for boost>=1.87
commit 1517dcca6cbfe4ac01c5defa4f7d8b1544d47663

Index: lib/network/NetworkConnection.cpp
--- lib/network/NetworkConnection.cpp.orig
+++ lib/network/NetworkConnection.cpp
@@ -199,7 +199,11 @@ void NetworkConnection::close()
 {
 	boost::system::error_code ec;
 	socket->close(ec);
+#if BOOST_VERSION >= 108700
+	timer->cancel();
+#else
 	timer->cancel(ec);
+#endif
 
 	//NOTE: ignoring error code, intended
 }
