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nng_pull(7)
===========
:doctype: manpage
:manmanual: nng
:mansource: nng
:icons: font
:source-highlighter: pygments
:copyright: Copyright 2017 Garrett D'Amore <garrett@damore.org> \
Copyright 2017 Capitar IT Group BV <info@capitar.com> \
This software is supplied under the terms of the MIT License, a \
copy of which should be located in the distribution where this \
file was obtained (LICENSE.txt). A copy of the license may also \
be found online at https://opensource.org/licenses/MIT.
NAME
----
nng_pull - pull protocol
SYNOPSIS
--------
[source,c]
----------
#include <nng/protocol/pipeline0/pull.h>
int nng_pull0_open(nng_socket *s);
----------
DESCRIPTION
-----------
The _nng_pull_ protocol is one half of a pipeline pattern. The other half
is the <<nng_push.adoc#,nng_push(7)>> protocol.
In the pipeline pattern, pushers distribute messages to pullers.
Each message sent
by a pusher will be sent to one of its peer pullers,
chosen in a round-robin fashion
from the set of connected peers available for receiving.
This property makes this pattern useful in load-balancing scenarios.
Socket Operations
~~~~~~~~~~~~~~~~~
The `nng_pull0_open()` call creates a puller socket. This socket
may be used to receive messages, but is unable to send them. Attempts
to send messages will result in `NNG_ENOTSUP`.
When receiving messages, the _nng_pull_ protocol accepts messages as
they arrive from peers. If two peers both have a message ready, the
order in which messages are handled is undefined.
Protocol Versions
~~~~~~~~~~~~~~~~~
Only version 0 of this protocol is supported. (At the time of writing,
no other versions of this protocol have been defined.)
Protocol Options
~~~~~~~~~~~~~~~~
The _nng_pull_ protocol has no protocol-specific options.
Protocol Headers
~~~~~~~~~~~~~~~~
The _nng_pull_ protocol has no protocol-specific headers.
SEE ALSO
--------
<<nng.adoc#,nng(7)>>
<<nng_push.adoc#,nng_push(7)>>
COPYRIGHT
---------
Copyright 2017 mailto:garrett@damore.org[Garrett D'Amore] +
Copyright 2017 mailto:info@capitar.com[Capitar IT Group BV]
This document is supplied under the terms of the
https://opensource.org/licenses/LICENSE.txt[MIT License].
|
