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phergie / phergie-irc-client-react

IRC client library built on React
BSD 3-Clause "New" or "Revised" License
57 stars 26 forks source link

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phergie/phergie-irc-client-react

A bare-bones PHP-based IRC client library built on React.

Build Status Coverage Status Code Climate

Install

The recommended method of installation is through composer.

composer require phergie/phergie-irc-client-react

Design goals

Usage

This example makes the bot greet other users as they join any of the channels in which the bot is present.

<?php
$connection = new \Phergie\Irc\Connection();
// ...

$client = new \Phergie\Irc\Client\React\Client();
$client->on('irc.received', function($message, $write, $connection, $logger) {
    if ($message['command'] !== 'JOIN') {
        return;
    }
    $channel = $message['params']['channels'];
    $nick = $message['nick'];
    $write->ircPrivmsg($channel, 'Welcome ' . $nick . '!');
});
$client->run($connection);

// Also works:
// $client->run(array($connection1, ..., $connectionN));

// Also possible:
// Don't autorun the event loopin case you pass your own event loop and run it yourself 
// $client->run($connection, false);
  1. Create and configure an instance of the connection class, \Phergie\Irc\Connection, for each server the bot will connect to. See phergie-irc-connection documentation for more information on configuring connection objects.
  2. Create an instance of the client class, \Phergie\Irc\Client\React\Client.
  3. Call the client object's on() method any number of times, each time specifying an event to monitor and a callback that will be executed whenever that event is received from the server.
  4. Call the client object's run() method with a connection object or array of multiple connection objects created in step #1.

Client Events

Below are the events supported by the client. Its on() method can be used to add callbacks for them.

connect.before.all

Emitted before any connections are established.

Parameters

Example

<?php
$client->on('connect.before.all', function(array $connections) {
    // ...
});

connect.after.all

Emitted after all connections are established.

Parameters

Note that if a connection attempt failed, the value in $writes for that connection will be null.

Example

<?php
$client->on('connect.after.all', function(array $connections, array $writes) {
    // ...
});

connect.before.each

Emitted before each connection is established.

Parameters

Example

<?php
$client->on('connect.before.each', function(\Phergie\Irc\ConnectionInterface $connection) {
    // ...
});

connect.after.each

Emitted after each connection is established.

One potentially useful application of this is to institute a delay between connections in cases where the client is attempting to establish multiple connections to the same server and that server throttles connection attempts by origin to prevent abuse, DDoS attacks, etc.

Parameters

Note that if the connection attempt failed, $write will be null.

Example

<?php
$client->on('connect.after.each', function(\Phergie\Irc\ConnectionInterface $connection, \Phergie\Irc\Client\React\WriteStream $write) {
    // ...
});

connect.error

Emitted when an error is encountered on a connection.

Parameters

Example

<?php
$client->on('connect.error', function(
    \Exception $message,
    \Phergie\Irc\ConnectionInterface $connection,
    \Psr\Log\LoggerInterface $logger
) use ($client) {
    $logger->debug('Connection to ' . $connection->getServerHostname() . ' lost: ' . $e->getMessage());
});

connect.end

Emitted when a connection is terminated.

This can be useful for re-establishing a connection if it is unexpectedly terminated.

Parameters

Example

<?php
$client->on('connect.end', function(\Phergie\Irc\ConnectionInterface $connection, \Psr\Log\LoggerInterface $logger) use ($client) {
    $logger->debug('Connection to ' . $connection->getServerHostname() . ' lost, attempting to reconnect');
    $client->addConnection($connection);
});

irc.received

Emitted when an IRC event is received from the server.

Parameters

Example

<?php
$client->on('irc.received', function(
    array $message,
    \Phergie\Irc\Client\React\WriteStream $write,
    \Phergie\Irc\ConnectionInterface $connection,
    \Psr\Log\LoggerInterface $logger
) {
    // ...
});

irc.sent

Emitted when an IRC event is sent by the client to the server.

Parameters

Example

<?php
$client->on('irc.sent', function(
    $message,
    \Phergie\Irc\Client\React\WriteStream $write,
    \Phergie\Irc\ConnectionInterface $connection,
    \Psr\Log\LoggerInterface $logger
) {
    // ...
});

irc.tick

Emitted periodically on each connection to allow events to be sent asynchronously versus in response to received or sent events. The interval between invocations is specified in seconds and set using the client's setTickInterval() method.

Parameters

Example

<?php
$client->on('irc.tick', function(
    \Phergie\Irc\Client\React\WriteStream $write,
    \Phergie\Irc\ConnectionInterface $connection,
    \Psr\Log\LoggerInterface $logger
) {
    // ...
});

Timers

In some cases, it's desirable to execute a callback on a specified interval rather than in response to a specific event.

One-Time Callbacks

To add one-time callbacks that execute after a specified amount of time (in seconds):

<?php
$client->addTimer(5, function() {
    // ...
});

The above example will execute the specified callback at least 5 seconds after it's added.

Recurring Callbacks

To add recurring callbacks that execute on a specified interval (in seconds):

<?php
$client->addPeriodicTimer(5, function() {
    // ...
});

The above example will execute the specified callback at least every 5 seconds after it's added.

Connection Options

force-ip4

Connection sockets will use IPv6 by default where available. If you need to force usage of IPv4, set this option to true.

<?php
$connection->setOption('force-ipv4', true);

allow-self-signed

By default all ssl connections only accept officially signed certificates. Sometimes you need to connect to a irc server that uses a self signed certificate. If you need to allow connections to servers using a self signed certificate, set this option to true.

<?php
$connection->setOption('allow-self-signed', true);

transport

By default, a standard TCP socket is used. For IRC servers that support TLS or SSL, specify an appropriate transport.

<?php
$connection->setOption('transport', 'ssl');

Tests

To run the unit test suite:

curl -s https://getcomposer.org/installer | php
php composer.phar install
./vendor/bin/phpunit

License

Released under the BSD License. See LICENSE.

Community

Check out #phergie on irc.freenode.net.