A wrapper class for an ENetHost.
ENet's purpose is to provide a relatively thin, simple and robust network communication layer on top of UDP (User Datagram Protocol).
destroy ( )
flush ( )
get_local_port ( ) const
get_max_channels ( ) const
get_peers ( )
COMPRESS_NONE = 0 --- No compression. This uses the most bandwidth, but has the upside of requiring the fewest CPU resources. This option may also be used to make network debugging using tools like Wireshark easier.
COMPRESS_RANGE_CODER = 1 --- ENet's built-in range encoding. Works well on small packets, but is not the most efficient algorithm on packets larger than 4 KB.
COMPRESS_ZSTD = 4 --- Zstandard compression. Note that this algorithm is not very efficient on packets smaller than 4 KB. Therefore, it's recommended to use other compression algorithms in most cases.
EVENT_NONE = 0 --- No event occurred within the specified time limit.
EVENT_CONNECT = 1 --- A connection request initiated by enet_host_connect has completed. The array will contain the peer which successfully connected.
EVENT_DISCONNECT = 2 --- A peer has disconnected. This event is generated on a successful completion of a disconnect initiated by ENetPacketPeer.peer_disconnect, if a peer has timed out, or if a connection request initialized by connect_to_host has timed out. The array will contain the peer which disconnected. The data field contains user supplied data describing the disconnection, or 0, if none is available.
EVENT_RECEIVE = 3 --- A packet has been received from a peer. The array will contain the peer which sent the packet, the channel number upon which the packet was received, and the received packet.
HOST_TOTAL_SENT_DATA = 0 --- Total data sent.
HOST_TOTAL_SENT_PACKETS = 1 --- Total UDP packets sent.
HOST_TOTAL_RECEIVED_DATA = 2 --- Total data received.
HOST_TOTAL_RECEIVED_PACKETS = 3 --- Total UDP packets received.
Adjusts the bandwidth limits of a host.
packet to be sent to all peers associated with the host over the specified
channel. See ENetPacketPeer
FLAG_* constants for available packet flags.
void channel_limit ( int limit )
Limits the maximum allowed channels of future incoming connections.
void compress ( CompressionMode mode )
Sets the compression method used for network packets. These have different tradeoffs of compression speed versus bandwidth, you may need to test which one works best for your use case if you use compression at all.
Note: Most games' network design involve sending many small packets frequently (smaller than 4 KB each). If in doubt, it is recommended to keep the default compression algorithm as it works best on these small packets.
Note: The compression mode must be set to the same value on both the server and all its clients. Clients will fail to connect if the compression mode set on the client differs from the one set on the server.
Initiates a connection to a foreign
address using the specified
port and allocating the requested
data can be passed during connection in the form of a 32 bit integer.
Create an ENetHost that will allow up to
max_peers connected peers, each allocating up to
max_channels channels, optionally limiting bandwidth to
Create an ENetHost like create_host which is also bound to the given
void destroy ( )
Destroys the host and all resources associated with it.
Configure this ENetHost to use the custom Godot extension allowing DTLS encryption for ENet clients. Call this before connect_to_host to have ENet connect using DTLS with
hostname verification. Verification can be optionally turned off via the
Configure this ENetHost to use the custom Godot extension allowing DTLS encryption for ENet servers. Call this right after create_host_bound to have ENet expect peers to connect using DTLS.
void flush ( )
Sends any queued packets on the host specified to its designated peers.
int get_local_port ( ) const
Returns the local port to which this peer is bound.
int get_max_channels ( ) const
Returns the maximum number of channels allowed for connected peers.
Array get_peers ( )
Returns the list of peers associated with this host.
Note: This list might include some peers that are not fully connected or are still being disconnected.
Returns and resets host statistics. See HostStatistic for more info.
void refuse_new_connections ( bool refuse )
Configures the DTLS server to automatically drop new connections.
Note: This method is only relevant after calling dtls_server_setup.
Waits for events on the host specified and shuttles packets between the host and its peers. The returned Array will have 4 elements. An EventType, the ENetPacketPeer which generated the event, the event associated data (if any), the event associated channel (if any). If the generated event is EVENT_RECEIVE, the received packet will be queued to the associated ENetPacketPeer.
Call this function regularly to handle connections, disconnections, and to receive new packets.