EventHttp::__construct
(PECL event >= 1.2.6-beta)
EventHttp::__construct — Constructs EventHttp object(the HTTP server)
Описание
Constructs the HTTP server object.
Список параметров
-
base -
Associated event base.
-
ctx -
EventSslContext class object. Turns plain HTTP server into HTTPS server. It means that if
ctxis configured correctly, then the underlying buffer events will be based on OpenSSL sockets. Thus, all traffic will pass through the SSL or TLS.Замечание:
This parameter is available only if Event is compiled with OpenSSL support and only with Libevent 2.1.0-alpha and higher.
Возвращаемые значения
Returns EventHttp object.
Список изменений
| Версия | Описание |
|---|---|
| 1.9.0 |
OpenSSL support (ctx) added.
|
Примеры
Пример #1 Simple HTTP server
<?php
/*
* Simple HTTP server.
*
* To test it:
* 1) Run it on a port of your choice, e.g.:
* $ php examples/http.php 8010
* 2) In another terminal connect to some address on this port
* and make GET or POST request(others are turned off here), e.g.:
* $ nc -t 127.0.0.1 8010
* POST /about HTTP/1.0
* Content-Type: text/plain
* Content-Length: 4
* Connection: close
* (press Enter)
*
* It will output
* a=12
* HTTP/1.0 200 OK
* Content-Type: text/html; charset=ISO-8859-1
* Connection: close
*
* $ nc -t 127.0.0.1 8010
* GET /dump HTTP/1.0
* Content-Type: text/plain
* Content-Encoding: UTF-8
* Connection: close
* (press Enter)
*
* It will output:
* HTTP/1.0 200 OK
* Content-Type: text/html; charset=ISO-8859-1
* Connection: close
* (press Enter)
*
* $ nc -t 127.0.0.1 8010
* GET /unknown HTTP/1.0
* Connection: close
*
* It will output:
* HTTP/1.0 200 OK
* Content-Type: text/html; charset=ISO-8859-1
* Connection: close
*
* 3) See what the server outputs on the previous terminal window.
*/
function _http_dump($req, $data) {
static $counter = 0;
static $max_requests = 2;
if (++$counter >= $max_requests) {
echo "Counter reached max requests $max_requests. Exiting\n";
exit();
}
echo __METHOD__, " called\n";
echo "request:"; var_dump($req);
echo "data:"; var_dump($data);
echo "\n===== DUMP =====\n";
echo "Command:", $req->getCommand(), PHP_EOL;
echo "URI:", $req->getUri(), PHP_EOL;
echo "Input headers:"; var_dump($req->getInputHeaders());
echo "Output headers:"; var_dump($req->getOutputHeaders());
echo "\n >> Sending reply ...";
$req->sendReply(200, "OK");
echo "OK\n";
echo "\n >> Reading input buffer ...\n";
$buf = $req->getInputBuffer();
while ($s = $buf->readLine(EventBuffer::EOL_ANY)) {
echo $s, PHP_EOL;
}
echo "No more data in the buffer\n";
}
function _http_about($req) {
echo __METHOD__, PHP_EOL;
echo "URI: ", $req->getUri(), PHP_EOL;
echo "\n >> Sending reply ...";
$req->sendReply(200, "OK");
echo "OK\n";
}
function _http_default($req, $data) {
echo __METHOD__, PHP_EOL;
echo "URI: ", $req->getUri(), PHP_EOL;
echo "\n >> Sending reply ...";
$req->sendReply(200, "OK");
echo "OK\n";
}
$port = 8010;
if ($argc > 1) {
$port = (int) $argv[1];
}
if ($port <= 0 || $port > 65535) {
exit("Invalid port");
}
$base = new EventBase();
$http = new EventHttp($base);
$http->setAllowedMethods(EventHttpRequest::CMD_GET | EventHttpRequest::CMD_POST);
$http->setCallback("/dump", "_http_dump", array(4, 8));
$http->setCallback("/about", "_http_about");
$http->setDefaultCallback("_http_default", "custom data value");
$http->bind("0.0.0.0", 8010);
$base->loop();
?>
Результатом выполнения данного примера будет что-то подобное:
a=12 HTTP/1.0 200 OK Content-Type: text/html; charset=ISO-8859-1 Connection: close HTTP/1.0 200 OK Content-Type: text/html; charset=ISO-8859-1 Connection: close (press Enter) HTTP/1.0 200 OK Content-Type: text/html; charset=ISO-8859-1 Connection: close
- Функция EventHttp::accept() - Makes an HTTP server accept connections on the specified socket stream or resource
- Функция EventHttp::addServerAlias() - Adds a server alias to the HTTP server object
- Функция EventHttp::bind() - Binds an HTTP server on the specified address and port
- Функция EventHttp::__construct() - Constructs EventHttp object(the HTTP server)
- Функция EventHttp::removeServerAlias() - Removes server alias
- Функция EventHttp::setAllowedMethods() - Sets the what HTTP methods are supported in requests accepted by this server, and passed to user callbacks
- Функция EventHttp::setCallback() - Sets a callback for specified URI
- Функция EventHttp::setDefaultCallback() - Sets default callback to handle requests that are not caught by specific callbacks
- Функция EventHttp::setMaxBodySize() - Sets maximum request body size
- Функция EventHttp::setMaxHeadersSize() - Sets maximum HTTP header size
- Функция EventHttp::setTimeout() - Sets the timeout for an HTTP request
Коментарии
This demo code has a memory leakIf you try to use the SSL context parameter and you receive an error that you're using 2 parameters instead of 1, then your libevent library is not recent enough to support all features.
When installing the event extension with PECL, the libevent library needs a certain version to support certain functions.
PECL does not show any errors or warnings but simple disables everything that your libevent version does not support.
For further details see my comment at
event.examples