Class reference
PacketPeer
Inherits RefCounted
Abstraction and base class for packet-based protocols.
Description
PacketPeer is an abstraction and base class for packet-based protocols (such as UDP). It provides an API for sending and receiving packets both as raw data or variables. This makes it easy to transfer data over a protocol, without having to encode data as low-level bytes or having to worry about network ordering. Note: When exporting to Android, make sure to enable the INTERNET permission in the Android export preset before exporting the project or using one-click deploy. Otherwise, network communication of any kind will be blocked by Android.
Properties
int encode_buffer_max_size = 8388608
int encode_buffer_max_size = 8388608Maximum buffer size allowed when encoding Variants. Raise this value to support heavier memory allocations. The put_var() method allocates memory on the stack, and the buffer used will grow automatically to the closest power of two to match the size of the Variant. If the Variant is bigger than encode_buffer_max_size, the method will error out with ERR_OUT_OF_MEMORY.
Methods
int get_available_packet_count() const
int get_available_packet_count() constReturns the number of packets currently available in the ring-buffer.
PackedByteArray get_packet()
PackedByteArray get_packet()Gets a raw packet.
int get_packet_error() const
int get_packet_error() constReturns the error state of the last packet received (via get_packet() and get_var()).
Variant get_var(bool allow_objects = false)
Variant get_var(bool allow_objects = false)Gets a Variant. If allow_objects is true, decoding objects is allowed. Internally, this uses the same decoding mechanism as the @GlobalScope.bytes_to_var() method. Warning: Deserialized objects can contain code which gets executed. Do not use this option if the serialized object comes from untrusted sources to avoid potential security threats such as remote code execution.
int put_packet(PackedByteArray buffer)
int put_packet(PackedByteArray buffer)Sends a raw packet.
int put_var(Variant var, bool full_objects = false)
int put_var(Variant var, bool full_objects = false)Sends a Variant as a packet. If full_objects is true, encoding objects is allowed (and can potentially include code). Internally, this uses the same encoding mechanism as the @GlobalScope.var_to_bytes() method.