EventHttp::__construct

(PECL event >= 1.2.6-beta)

EventHttp::__constructConstructs EventHttp object(the HTTP server)

说明

public EventHttp::__construct ( EventBase $base , EventSslContext $ctx = null )

Constructs the HTTP server object.

参数

base

Associated event base.

ctx

EventSslContext class object. Turns plain HTTP server into HTTPS server. It means that if ctx is configured correctly, then the underlying buffer events will be based on OpenSSL sockets. Thus, all traffic will pass through the SSL or TLS.

Note:

This parameter is available only if Event is compiled with OpenSSL support and only with Libevent 2.1.0-alpha and higher.

返回值

Returns EventHttp object.

更新日志

版本 说明
PECL event 1.9.0 OpenSSL support (ctx) added.

范例

Example #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 
$sPHP_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 <= || $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(48));
$http->setCallback("/about""_http_about");
$http->setDefaultCallback("_http_default""custom data value");

$http->bind("0.0.0.0"8010);
$base->loop();
?>

以上例程的输出类似于:

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

User Contributed Notes

Bas Vijfwinkel 26-Jun-2015 09:22
If 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
http://php.net/manual/en/event.examples.php
Anonymous 06-Mar-2015 11:47
This demo code has a memory leak
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