Two changes:

Fix a bug of ipv4_only connections

Port to DragonflyBSD

CMakeLists.txt

@@ -8,7 +8,7 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
-if(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
+if(${CMAKE_SYSTEM_NAME} MATCHES "^DragonFly?" OR ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
 	include_directories("/usr/local/include")
 	include_directories("/usr/local/include/botan-2")
 endif()

src/main.cpp

@@ -14,7 +14,7 @@ int main(int argc, char *argv[])
 	if (argc <= 1)
 	{
 		char app_name[] = "punchnat";
-		printf("%s version 20230423\n", app_name);
+		printf("%s version 20230426\n", app_name);
 		printf("Usage: %s config1.conf\n", app_name);
 		printf("       %s config1.conf config2.conf...\n", app_name);
 		return 0;
@@ -54,7 +54,7 @@ int main(int argc, char *argv[])
 		tcp_sessions.emplace_back(tcp_mode(ioc, settings));
 	}
 
-	std::cout << "error_found: " << (error_found ? "Yes" : "No") << "\n";
+	std::cout << "Error Found in Configuration File(s): " << (error_found ? "Yes" : "No") << "\n";
 	std::cout << "TCP: " << tcp_sessions.size() << "\n";
 	std::cout << "UDP: " << udp_sessions.size() << "\n";
 
@@ -74,6 +74,5 @@ int main(int argc, char *argv[])
 		network_io.run();
 	}
 
-	printf("bye\n");
 	return 0;
 }

src/networks/connections.cpp

@@ -541,10 +541,16 @@ int64_t udp_client::time_gap_of_send()
 
 void udp_client::initialise()
 {
-	asio::ip::v6_only v6_option(false);
-	connection_socket.open(udp::v6());
-	if (!ipv4_only)
+	if (ipv4_only)
+	{
+		connection_socket.open(udp::v4());
+	}
+	else
+	{
+		asio::ip::v6_only v6_option(false);
+		connection_socket.open(udp::v6());
 		connection_socket.set_option(v6_option);
+	}
 }
 
 void udp_client::start_receive()

src/shares/share_defines.cpp

@@ -1,4 +1,5 @@
 #include <climits>
+#include <iomanip>
 #include <limits>
 #include <stdexcept>
 #include <cstdlib>