godot-docs/classes/class_streampeertcp.rst

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.. _class_StreamPeerTCP:

StreamPeerTCP
=============

**Inherits:** :ref:`StreamPeer<class_StreamPeer>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

A stream peer that handles TCP connections.

.. rst-class:: classref-introduction-group

Description
-----------

A stream peer that handles TCP connections. This object can be used to connect to TCP servers, or also is returned by a TCP server.

\ **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.

.. rst-class:: classref-reftable-group

Methods
-------

.. table::
   :widths: auto

   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`    | :ref:`bind<class_StreamPeerTCP_method_bind>` **(** :ref:`int<class_int>` port, :ref:`String<class_String>` host="*" **)**                   |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`    | :ref:`connect_to_host<class_StreamPeerTCP_method_connect_to_host>` **(** :ref:`String<class_String>` host, :ref:`int<class_int>` port **)** |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                     | :ref:`disconnect_from_host<class_StreamPeerTCP_method_disconnect_from_host>` **(** **)**                                                    |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`              | :ref:`get_connected_host<class_StreamPeerTCP_method_get_connected_host>` **(** **)** |const|                                                |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                    | :ref:`get_connected_port<class_StreamPeerTCP_method_get_connected_port>` **(** **)** |const|                                                |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                    | :ref:`get_local_port<class_StreamPeerTCP_method_get_local_port>` **(** **)** |const|                                                        |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Status<enum_StreamPeerTCP_Status>` | :ref:`get_status<class_StreamPeerTCP_method_get_status>` **(** **)** |const|                                                                |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>`    | :ref:`poll<class_StreamPeerTCP_method_poll>` **(** **)**                                                                                    |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                     | :ref:`set_no_delay<class_StreamPeerTCP_method_set_no_delay>` **(** :ref:`bool<class_bool>` enabled **)**                                    |
   +------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Enumerations
------------

.. _enum_StreamPeerTCP_Status:

.. rst-class:: classref-enumeration

enum **Status**:

.. _class_StreamPeerTCP_constant_STATUS_NONE:

.. rst-class:: classref-enumeration-constant

:ref:`Status<enum_StreamPeerTCP_Status>` **STATUS_NONE** = ``0``

The initial status of the **StreamPeerTCP**. This is also the status after disconnecting.

.. _class_StreamPeerTCP_constant_STATUS_CONNECTING:

.. rst-class:: classref-enumeration-constant

:ref:`Status<enum_StreamPeerTCP_Status>` **STATUS_CONNECTING** = ``1``

A status representing a **StreamPeerTCP** that is connecting to a host.

.. _class_StreamPeerTCP_constant_STATUS_CONNECTED:

.. rst-class:: classref-enumeration-constant

:ref:`Status<enum_StreamPeerTCP_Status>` **STATUS_CONNECTED** = ``2``

A status representing a **StreamPeerTCP** that is connected to a host.

.. _class_StreamPeerTCP_constant_STATUS_ERROR:

.. rst-class:: classref-enumeration-constant

:ref:`Status<enum_StreamPeerTCP_Status>` **STATUS_ERROR** = ``3``

A status representing a **StreamPeerTCP** in error state.

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Method Descriptions
-------------------

.. _class_StreamPeerTCP_method_bind:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **bind** **(** :ref:`int<class_int>` port, :ref:`String<class_String>` host="*" **)**

Opens the TCP socket, and binds it to the specified local address.

This method is generally not needed, and only used to force the subsequent call to :ref:`connect_to_host<class_StreamPeerTCP_method_connect_to_host>` to use the specified ``host`` and ``port`` as source address. This can be desired in some NAT punchthrough techniques, or when forcing the source network interface.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_connect_to_host:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **connect_to_host** **(** :ref:`String<class_String>` host, :ref:`int<class_int>` port **)**

Connects to the specified ``host:port`` pair. A hostname will be resolved if valid. Returns :ref:`@GlobalScope.OK<class_@GlobalScope_constant_OK>` on success.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_disconnect_from_host:

.. rst-class:: classref-method

void **disconnect_from_host** **(** **)**

Disconnects from host.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_get_connected_host:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_connected_host** **(** **)** |const|

Returns the IP of this peer.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_get_connected_port:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_connected_port** **(** **)** |const|

Returns the port of this peer.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_get_local_port:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_local_port** **(** **)** |const|

Returns the local port to which this peer is bound.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_get_status:

.. rst-class:: classref-method

:ref:`Status<enum_StreamPeerTCP_Status>` **get_status** **(** **)** |const|

Returns the status of the connection, see :ref:`Status<enum_StreamPeerTCP_Status>`.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_poll:

.. rst-class:: classref-method

:ref:`Error<enum_@GlobalScope_Error>` **poll** **(** **)**

Poll the socket, updating its state. See :ref:`get_status<class_StreamPeerTCP_method_get_status>`.

.. rst-class:: classref-item-separator

----

.. _class_StreamPeerTCP_method_set_no_delay:

.. rst-class:: classref-method

void **set_no_delay** **(** :ref:`bool<class_bool>` enabled **)**

If ``enabled`` is ``true``, packets will be sent immediately. If ``enabled`` is ``false`` (the default), packet transfers will be delayed and combined using `Nagle's algorithm <https://en.wikipedia.org/wiki/Nagle%27s_algorithm>`__.

\ **Note:** It's recommended to leave this disabled for applications that send large packets or need to transfer a lot of data, as enabling this can decrease the total available bandwidth.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`