StreamPeer

Inherits: Reference < Object

Inherited By: StreamPeerBuffer, StreamPeerGDNative, StreamPeerSSL, StreamPeerTCP

Abstraction and base class for stream-based protocols.

Description

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

Properties

Methods

Property Descriptions

• bool big_endian

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

Method Descriptions

• 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_8 ( )

Gets a signed byte from the stream.

• int get_available_bytes ( ) const

Returns the amount of bytes this StreamPeer has available.

• Array get_data ( int bytes )

Returns a chunk data with the received bytes. The amount 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 amount 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 a 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_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.

• int get_u8 ( )

Gets an unsigned byte from the stream.

• String get_utf8_string ( int bytes=-1 )

Gets an 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.

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_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.

• void put_8 ( int value )

Puts a signed byte into the stream.

• Error put_data ( PoolByteArray 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 ( PoolByteArray 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())

• 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_u8 ( int value )

Puts an unsigned byte 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 an UTF-8 string without prepending its size, you can use put_data:

put_data("Hello world".to_utf8())

• 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).