EventBufferEvent::connect

例1 EventBufferEvent::connect() example
 <?php/* * 1. Connect to 127.0.0.1 at port 80 * by means of EventBufferEvent::connect(). * * 2. Request /index.cphp via HTTP/1.0 * using the output buffer. * * 3. Asyncronously read the response and print it to stdout. *//* Read callback */function readcb($bev, $base) {    $input = $bev->getInput();    while (($n = $input->remove($buf, 1024)) > 0) {        echo $buf;    }}/* Event callback */function eventcb($bev, $events, $base) {    if ($events & EventBufferEvent::CONNECTED) {        echo "Connected.\n";    } elseif ($events & (EventBufferEvent::ERROR | EventBufferEvent::EOF)) {        if ($events & EventBufferEvent::ERROR) {            echo "DNS error: ", $bev->getDnsErrorString(), PHP_EOL;        }        echo "Closing\n";        $base->exit();        exit("Done\n");    }}$base = new EventBase();echo "step 1\n";$bev = new EventBufferEvent($base, /* use internal socket */ NULL,    EventBufferEvent::OPT_CLOSE_ON_FREE | EventBufferEvent::OPT_DEFER_CALLBACKS);if (!$bev) {    exit("Failed creating bufferevent socket\n");}echo "step 2\n";$bev->setCallbacks("readcb", /* writecb */ NULL, "eventcb", $base);$bev->enable(Event::READ | Event::WRITE);echo "step 3\n";/* Send request */$output = $bev->getOutput();if (!$output->add(    "GET /index.cphp HTTP/1.0\r\n".    "Connection: Close\r\n\r\n")) {    exit("Failed adding request to output buffer\n");}/* Connect to the host syncronously. * We know the IP, and don't need to resolve DNS. */if (!$bev->connect("127.0.0.1:80")) {    exit("Can't connect to host\n");}/* Dispatch pending events */$base->dispatch(); 
上の例の出力は、たとえば以下のようになります。
 
step 1
step 2
step 3
Connected.
HTTP/1.1 200 OK
Server: nginx/1.2.6
Date: Sat, 09 Mar 2013 10:06:58 GMT
Content-Type: text/html; charset=utf-8
Connection: close
X-Powered-By: PHP/5.4.11--pl2-gentoo

sdfsdfsf
Closing
Done
 
例2 Connect to UNIX domain socket which presumably is served by a server, read response from the server and output it to the console
 

class MyUnixSocketClient {
    private $base, $bev;

    function __construct($base, $sock_path) {
        $this->base = $base;
        $this->bev = new EventBufferEvent($base, NULL, EventBufferEvent::OPT_CLOSE_ON_FREE,
            array ($this, "read_cb"), NULL, array ($this, "event_cb"));

        if (!$this->bev->connect("unix:$sock_path")) {
            trigger_error("Failed to connect to socket `$sock_path'", E_USER_ERROR);
        }

        $this->bev->enable(Event::READ);
    }

    function __destruct() {
        if ($this->bev) {
            $this->bev->free();
            $this->bev = NULL;
        }
    }

    function dispatch() {
        $this->base->dispatch();
    }

    function read_cb($bev, $unused) {
        $in = $bev->input;

        printf("Received %ld bytes\n", $in->length);
        printf("----- data ----\n");
        printf("%ld:\t%s\n", (int) $in->length, $in->pullup(-1));

        $this->bev->free();
        $this->bev = NULL;
        $this->base->exit(NULL);
    }

    function event_cb($bev, $events, $unused) {
        if ($events & EventBufferEvent::ERROR) {
            echo "Error from bufferevent\n";
        }

        if ($events & (EventBufferEvent::EOF | EventBufferEvent::ERROR)) {
            $bev->free();
            $bev = NULL;
        } elseif ($events & EventBufferEvent::CONNECTED) {
            $bev->output->add("test\n");
        }
    }
}

if ($argc <= 1) {
    exit("Socket path is not provided\n");
}
$sock_path = $argv[1];

$base = new EventBase();
$cl = new MyUnixSocketClient($base, $sock_path);
$cl->dispatch();

 
上の例の出力は、たとえば以下のようになります。
 
Received 5 bytes
----- data ----
5:  test