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UDP sockets broadcast is now disabled by default.
Add method `set_broadcast_enabled` to allow enabling broadcast via GDScript.
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ab1bfb9007
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@ -37,6 +37,12 @@ void PacketPeerUDP::set_blocking_mode(bool p_enable) {
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blocking = p_enable;
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}
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void PacketPeerUDP::set_broadcast_enabled(bool p_enabled) {
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broadcast = p_enabled;
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if (_sock.is_valid() && _sock->is_open())
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_sock->set_broadcasting_enabled(p_enabled);
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}
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Error PacketPeerUDP::join_multicast_group(IP_Address p_multi_address, String p_if_name) {
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ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE);
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@ -47,6 +53,7 @@ Error PacketPeerUDP::join_multicast_group(IP_Address p_multi_address, String p_i
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Error err = _sock->open(NetSocket::TYPE_UDP, ip_type);
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ERR_FAIL_COND_V(err != OK, err);
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_sock->set_blocking_enabled(false);
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_sock->set_broadcasting_enabled(broadcast);
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}
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return _sock->join_multicast_group(p_multi_address, p_if_name);
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}
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@ -122,6 +129,7 @@ Error PacketPeerUDP::put_packet(const uint8_t *p_buffer, int p_buffer_size) {
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err = _sock->open(NetSocket::TYPE_UDP, ip_type);
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ERR_FAIL_COND_V(err != OK, err);
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_sock->set_blocking_enabled(false);
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_sock->set_broadcasting_enabled(broadcast);
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}
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do {
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@ -165,6 +173,7 @@ Error PacketPeerUDP::listen(int p_port, const IP_Address &p_bind_address, int p_
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_sock->set_blocking_enabled(false);
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_sock->set_reuse_address_enabled(true);
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_sock->set_broadcasting_enabled(broadcast);
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err = _sock->bind(p_bind_address, p_port);
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if (err != OK) {
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@ -258,6 +267,7 @@ void PacketPeerUDP::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_packet_ip"), &PacketPeerUDP::_get_packet_ip);
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ClassDB::bind_method(D_METHOD("get_packet_port"), &PacketPeerUDP::get_packet_port);
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ClassDB::bind_method(D_METHOD("set_dest_address", "host", "port"), &PacketPeerUDP::_set_dest_address);
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ClassDB::bind_method(D_METHOD("set_broadcast_enabled", "enabled"), &PacketPeerUDP::set_broadcast_enabled);
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ClassDB::bind_method(D_METHOD("join_multicast_group", "multicast_address", "interface_name"), &PacketPeerUDP::join_multicast_group);
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ClassDB::bind_method(D_METHOD("leave_multicast_group", "multicast_address", "interface_name"), &PacketPeerUDP::leave_multicast_group);
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}
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@ -267,6 +277,7 @@ PacketPeerUDP::PacketPeerUDP() :
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queue_count(0),
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peer_port(0),
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blocking(true),
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broadcast(false),
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_sock(Ref<NetSocket>(NetSocket::create())) {
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rb.resize(16);
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}
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@ -53,6 +53,7 @@ protected:
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IP_Address peer_addr;
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int peer_port;
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bool blocking;
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bool broadcast;
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Ref<NetSocket> _sock;
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static void _bind_methods();
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@ -77,6 +78,7 @@ public:
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Error get_packet(const uint8_t **r_buffer, int &r_buffer_size);
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int get_available_packet_count() const;
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int get_max_packet_size() const;
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void set_broadcast_enabled(bool p_enabled);
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Error join_multicast_group(IP_Address p_multi_address, String p_if_name);
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Error leave_multicast_group(IP_Address p_multi_address, String p_if_name);
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@ -76,6 +76,15 @@
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If [code]bind_address[/code] is set to any valid address (e.g. [code]"192.168.1.101"[/code], [code]"::1"[/code], etc), the peer will only listen on the interface with that addresses (or fail if no interface with the given address exists).
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</description>
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</method>
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<method name="set_broadcast_enabled">
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<return type="void">
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</return>
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<argument index="0" name="enabled" type="bool">
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</argument>
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<description>
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Enable or disable sending of broadcast packets (e.g. [code]set_dest_address("255.255.255.255", 4343)[/code]. This option is disabled by default.
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</description>
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</method>
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<method name="set_dest_address">
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<return type="int" enum="Error">
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</return>
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@ -85,6 +94,7 @@
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</argument>
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<description>
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Sets the destination address and port for sending packets and variables. A hostname will be resolved using DNS if needed.
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Note: [method set_broadcast_enabled] must be enabled before sending packets to a broadcast address (e.g. [code]255.255.255.255[/code]).
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</description>
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</method>
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<method name="wait">
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@ -333,9 +333,10 @@ Error NetSocketPosix::open(Type p_sock_type, IP::Type &ip_type) {
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set_ipv6_only_enabled(ip_type != IP::TYPE_ANY);
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}
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if (protocol == IPPROTO_UDP && ip_type != IP::TYPE_IPV6) {
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// Enable broadcasting for UDP sockets if it's not IPv6 only (IPv6 has no broadcast option).
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set_broadcasting_enabled(true);
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if (protocol == IPPROTO_UDP) {
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// Make sure to disable broadcasting for UDP sockets.
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// Depending on the OS, this option might or might not be enabled by default. Let's normalize it.
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set_broadcasting_enabled(false);
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}
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_is_stream = p_sock_type == TYPE_TCP;
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@ -606,7 +607,8 @@ Error NetSocketPosix::sendto(const uint8_t *p_buffer, int p_len, int &r_sent, IP
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Error NetSocketPosix::set_broadcasting_enabled(bool p_enabled) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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// IPv6 has no broadcast support.
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ERR_FAIL_COND_V(_ip_type == IP::TYPE_IPV6, ERR_UNAVAILABLE);
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if (_ip_type == IP::TYPE_IPV6)
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return ERR_UNAVAILABLE;
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int par = p_enabled ? 1 : 0;
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if (setsockopt(_sock, SOL_SOCKET, SO_BROADCAST, SOCK_CBUF(&par), sizeof(int)) != 0) {
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