StreamPeer

Inherits: RefCounted < Object

Inherited By: StreamPeerBuffer, StreamPeerExtension, StreamPeerGZIP, StreamPeerTCP, StreamPeerTLS

Abstract base class for interacting with streams.

Description

StreamPeer is an abstract base class mostly used for stream-based protocols (such as TCP). It provides an API for sending and receiving data through streams as raw data or strings.

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

bool

big_endian

false

Methods

int

get_8 ( )

int

get_16 ( )

int

get_32 ( )

int

get_64 ( )

int

get_available_bytes ( ) const

Array

get_data ( int bytes )

float

get_double ( )

float

get_float ( )

Array

get_partial_data ( int bytes )

String

get_string ( int bytes=-1 )

int

get_u8 ( )

int

get_u16 ( )

int

get_u32 ( )

int

get_u64 ( )

String

get_utf8_string ( int bytes=-1 )

Variant

get_var ( bool allow_objects=false )

void

put_8 ( int value )

void

put_16 ( int value )

void

put_32 ( int value )

void

put_64 ( int value )

Error

put_data ( PackedByteArray data )

void

put_double ( float value )

void

put_float ( float value )

Array

put_partial_data ( PackedByteArray data )

void

put_string ( String value )

void

put_u8 ( int value )

void

put_u16 ( int value )

void

put_u32 ( int value )

void

put_u64 ( int value )

void

put_utf8_string ( String value )

void

put_var ( Variant value, bool full_objects=false )

Property Descriptions

bool big_endian = false

  • void set_big_endian ( bool value )

  • bool is_big_endian_enabled ( )

If true, this StreamPeer will using big-endian format for encoding and decoding.

Method Descriptions

int get_8 ( )

Gets a signed byte from the stream.

int get_16 ( )

Gets a signed 16-bit value from the stream.

int get_32 ( )

Gets a signed 32-bit value from the stream.

int get_64 ( )

Gets a signed 64-bit value from the stream.

int get_available_bytes ( ) const

Returns the number of bytes this StreamPeer has available.

Array get_data ( int bytes )

Returns a chunk data with the received bytes. The number of bytes to be received can be requested in the bytes argument. If not enough bytes are available, the function will block until the desired amount is received. This function returns two values, an Error code and a data array.

float get_double ( )

Gets a double-precision float from the stream.

float get_float ( )

Gets a single-precision float from the stream.

Array get_partial_data ( int bytes )

Returns a chunk data with the received bytes. The number of bytes to be received can be requested in the "bytes" argument. If not enough bytes are available, the function will return how many were actually received. This function returns two values, an Error code, and a data array.

String get_string ( int bytes=-1 )

Gets an ASCII string with byte-length bytes from the stream. If bytes is negative (default) the length will be read from the stream using the reverse process of put_string.

int get_u8 ( )

Gets an unsigned byte from the stream.

int get_u16 ( )

Gets an unsigned 16-bit value from the stream.

int get_u32 ( )

Gets an unsigned 32-bit value from the stream.

int get_u64 ( )

Gets an unsigned 64-bit value from the stream.

String get_utf8_string ( int bytes=-1 )

Gets a UTF-8 string with byte-length bytes from the stream (this decodes the string sent as UTF-8). If bytes is negative (default) the length will be read from the stream using the reverse process of put_utf8_string.

Variant get_var ( bool allow_objects=false )

Gets a Variant from the stream. 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.

void put_8 ( int value )

Puts a signed byte into the stream.

void put_16 ( int value )

Puts a signed 16-bit value into the stream.

void put_32 ( int value )

Puts a signed 32-bit value into the stream.

void put_64 ( int value )

Puts a signed 64-bit value into the stream.

Error put_data ( PackedByteArray data )

Sends a chunk of data through the connection, blocking if necessary until the data is done sending. This function returns an Error code.

void put_double ( float value )

Puts a double-precision float into the stream.

void put_float ( float value )

Puts a single-precision float into the stream.

Array put_partial_data ( PackedByteArray data )

Sends a chunk of data through the connection. If all the data could not be sent at once, only part of it will. This function returns two values, an Error code and an integer, describing how much data was actually sent.

void put_string ( String value )

Puts a zero-terminated ASCII string into the stream prepended by a 32-bit unsigned integer representing its size.

Note: To put an ASCII string without prepending its size, you can use put_data:

put_data("Hello world".to_ascii_buffer())

void put_u8 ( int value )

Puts an unsigned byte into the stream.

void put_u16 ( int value )

Puts an unsigned 16-bit value into the stream.

void put_u32 ( int value )

Puts an unsigned 32-bit value into the stream.

void put_u64 ( int value )

Puts an unsigned 64-bit value into the stream.

void put_utf8_string ( String value )

Puts a zero-terminated UTF-8 string into the stream prepended by a 32 bits unsigned integer representing its size.

Note: To put a UTF-8 string without prepending its size, you can use put_data:

put_data("Hello world".to_utf8_buffer())

void put_var ( Variant value, bool full_objects=false )

Puts a Variant into the stream. 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.