pyzmq/docs/source/api/zmq.eventloop.future.md

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% AUTO-GENERATED FILE -- DO NOT EDIT!
# eventloop.future
## Module: {mod}`zmq.eventloop.future`
```{eval-rst}
.. automodule:: zmq.eventloop.future
```
```{currentmodule} zmq.eventloop.future
```
```{versionadded} 15.0
```
As of pyzmq 15, there is a new Socket subclass that returns Futures for recv methods,
which can be found at {class}`Socket`.
You can create these sockets by instantiating a {class}`Context`
from the same module.
These sockets let you easily use zmq with tornado's coroutines.
```{seealso}
{mod}`tornado.gen`
```
```python
from tornado import gen
from zmq.eventloop.future import Context
ctx = Context()
@gen.coroutine
def recv_and_process():
sock = ctx.socket(zmq.PULL)
sock.bind(url)
msg = yield sock.recv_multipart() # waits for msg to be ready
reply = yield async_process(msg)
yield sock.send_multipart(reply)
```
## Classes
### {class}`Context`
Context class that creates Future-returning sockets. See {class}`zmq.Context` for more info.
```{eval-rst}
.. autoclass:: Context
```
### {class}`Socket`
Socket subclass that returns {class}`~tornado.concurrent.Future` s from blocking methods,
for use in coroutines and async applications.
```{seealso}
{class}`zmq.Socket` for the inherited API.
```
```{eval-rst}
.. autoclass:: Socket
.. automethod:: recv
:noindex:
.. automethod:: recv_multipart
:noindex:
.. automethod:: send
:noindex:
.. automethod:: send_multipart
:noindex:
.. automethod:: poll
:noindex:
```
### {class}`Poller`
Poller subclass that returns {class}`~tornado.concurrent.Future` s from poll,
for use in coroutines and async applications.
```{seealso}
{class}`zmq.Poller` for the inherited API.
```
```{eval-rst}
.. autoclass:: Poller
.. automethod:: poll
:noindex:
```