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#866 PEAR update
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akasima
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18 changed files with 7958 additions and 1 deletions
297
libs/PEAR.1.9.5/HTTP/Request2/SocketWrapper.php
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297
libs/PEAR.1.9.5/HTTP/Request2/SocketWrapper.php
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<?php
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/**
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* Socket wrapper class used by Socket Adapter
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*
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* PHP version 5
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*
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* LICENSE
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*
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* This source file is subject to BSD 3-Clause License that is bundled
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* with this package in the file LICENSE and available at the URL
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* https://raw.github.com/pear/HTTP_Request2/trunk/docs/LICENSE
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*
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* @category HTTP
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* @package HTTP_Request2
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* @author Alexey Borzov <avb@php.net>
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* @copyright 2008-2014 Alexey Borzov <avb@php.net>
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* @license http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
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* @link http://pear.php.net/package/HTTP_Request2
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*/
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/** Exception classes for HTTP_Request2 package */
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require_once 'HTTP/Request2/Exception.php';
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/**
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* Socket wrapper class used by Socket Adapter
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*
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* Needed to properly handle connection errors, global timeout support and
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* similar things. Loosely based on Net_Socket used by older HTTP_Request.
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*
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* @category HTTP
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* @package HTTP_Request2
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* @author Alexey Borzov <avb@php.net>
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* @license http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
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* @version Release: 2.2.1
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* @link http://pear.php.net/package/HTTP_Request2
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* @link http://pear.php.net/bugs/bug.php?id=19332
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* @link http://tools.ietf.org/html/rfc1928
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*/
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class HTTP_Request2_SocketWrapper
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{
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/**
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* PHP warning messages raised during stream_socket_client() call
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* @var array
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*/
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protected $connectionWarnings = array();
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/**
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* Connected socket
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* @var resource
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*/
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protected $socket;
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/**
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* Sum of start time and global timeout, exception will be thrown if request continues past this time
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* @var integer
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*/
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protected $deadline;
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/**
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* Global timeout value, mostly for exception messages
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* @var integer
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*/
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protected $timeout;
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/**
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* Class constructor, tries to establish connection
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*
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* @param string $address Address for stream_socket_client() call,
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* e.g. 'tcp://localhost:80'
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* @param int $timeout Connection timeout (seconds)
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* @param array $contextOptions Context options
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*
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* @throws HTTP_Request2_LogicException
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* @throws HTTP_Request2_ConnectionException
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*/
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public function __construct($address, $timeout, array $contextOptions = array())
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{
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if (!empty($contextOptions)
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&& !isset($contextOptions['socket']) && !isset($contextOptions['ssl'])
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) {
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// Backwards compatibility with 2.1.0 and 2.1.1 releases
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$contextOptions = array('ssl' => $contextOptions);
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}
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$context = stream_context_create();
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foreach ($contextOptions as $wrapper => $options) {
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foreach ($options as $name => $value) {
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if (!stream_context_set_option($context, $wrapper, $name, $value)) {
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throw new HTTP_Request2_LogicException(
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"Error setting '{$wrapper}' wrapper context option '{$name}'"
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);
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}
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}
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}
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set_error_handler(array($this, 'connectionWarningsHandler'));
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$this->socket = stream_socket_client(
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$address, $errno, $errstr, $timeout, STREAM_CLIENT_CONNECT, $context
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);
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restore_error_handler();
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// if we fail to bind to a specified local address (see request #19515),
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// connection still succeeds, albeit with a warning. Throw an Exception
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// with the warning text in this case as that connection is unlikely
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// to be what user wants and as Curl throws an error in similar case.
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if ($this->connectionWarnings) {
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if ($this->socket) {
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fclose($this->socket);
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}
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$error = $errstr ? $errstr : implode("\n", $this->connectionWarnings);
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throw new HTTP_Request2_ConnectionException(
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"Unable to connect to {$address}. Error: {$error}", 0, $errno
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);
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}
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}
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/**
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* Destructor, disconnects socket
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*/
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public function __destruct()
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{
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fclose($this->socket);
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}
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/**
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* Wrapper around fread(), handles global request timeout
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*
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* @param int $length Reads up to this number of bytes
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*
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* @return string Data read from socket
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* @throws HTTP_Request2_MessageException In case of timeout
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*/
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public function read($length)
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{
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if ($this->deadline) {
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stream_set_timeout($this->socket, max($this->deadline - time(), 1));
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}
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$data = fread($this->socket, $length);
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$this->checkTimeout();
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return $data;
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}
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/**
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* Reads until either the end of the socket or a newline, whichever comes first
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*
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* Strips the trailing newline from the returned data, handles global
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* request timeout. Method idea borrowed from Net_Socket PEAR package.
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*
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* @param int $bufferSize buffer size to use for reading
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* @param int $localTimeout timeout value to use just for this call
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* (used when waiting for "100 Continue" response)
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*
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* @return string Available data up to the newline (not including newline)
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* @throws HTTP_Request2_MessageException In case of timeout
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*/
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public function readLine($bufferSize, $localTimeout = null)
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{
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$line = '';
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while (!feof($this->socket)) {
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if (null !== $localTimeout) {
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stream_set_timeout($this->socket, $localTimeout);
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} elseif ($this->deadline) {
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stream_set_timeout($this->socket, max($this->deadline - time(), 1));
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}
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$line .= @fgets($this->socket, $bufferSize);
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if (null === $localTimeout) {
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$this->checkTimeout();
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} else {
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$info = stream_get_meta_data($this->socket);
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// reset socket timeout if we don't have request timeout specified,
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// prevents further calls failing with a bogus Exception
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if (!$this->deadline) {
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$default = (int)@ini_get('default_socket_timeout');
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stream_set_timeout($this->socket, $default > 0 ? $default : PHP_INT_MAX);
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}
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if ($info['timed_out']) {
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throw new HTTP_Request2_MessageException(
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"readLine() call timed out", HTTP_Request2_Exception::TIMEOUT
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);
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}
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}
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if (substr($line, -1) == "\n") {
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return rtrim($line, "\r\n");
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}
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}
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return $line;
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}
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/**
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* Wrapper around fwrite(), handles global request timeout
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*
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* @param string $data String to be written
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*
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* @return int
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* @throws HTTP_Request2_MessageException
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*/
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public function write($data)
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{
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if ($this->deadline) {
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stream_set_timeout($this->socket, max($this->deadline - time(), 1));
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}
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$written = fwrite($this->socket, $data);
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$this->checkTimeout();
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// http://www.php.net/manual/en/function.fwrite.php#96951
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if ($written < strlen($data)) {
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throw new HTTP_Request2_MessageException('Error writing request');
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}
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return $written;
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}
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/**
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* Tests for end-of-file on a socket
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*
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* @return bool
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*/
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public function eof()
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{
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return feof($this->socket);
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}
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/**
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* Sets request deadline
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*
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* @param int $deadline Exception will be thrown if request continues
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* past this time
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* @param int $timeout Original request timeout value, to use in
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* Exception message
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*/
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public function setDeadline($deadline, $timeout)
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{
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$this->deadline = $deadline;
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$this->timeout = $timeout;
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}
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/**
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* Turns on encryption on a socket
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*
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* @throws HTTP_Request2_ConnectionException
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*/
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public function enableCrypto()
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{
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$modes = array(
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STREAM_CRYPTO_METHOD_TLS_CLIENT,
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STREAM_CRYPTO_METHOD_SSLv3_CLIENT,
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STREAM_CRYPTO_METHOD_SSLv23_CLIENT,
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STREAM_CRYPTO_METHOD_SSLv2_CLIENT
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);
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foreach ($modes as $mode) {
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if (stream_socket_enable_crypto($this->socket, true, $mode)) {
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return;
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}
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}
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throw new HTTP_Request2_ConnectionException(
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'Failed to enable secure connection when connecting through proxy'
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);
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}
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/**
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* Throws an Exception if stream timed out
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*
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* @throws HTTP_Request2_MessageException
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*/
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protected function checkTimeout()
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{
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$info = stream_get_meta_data($this->socket);
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if ($info['timed_out'] || $this->deadline && time() > $this->deadline) {
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$reason = $this->deadline
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? "after {$this->timeout} second(s)"
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: 'due to default_socket_timeout php.ini setting';
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throw new HTTP_Request2_MessageException(
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"Request timed out {$reason}", HTTP_Request2_Exception::TIMEOUT
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);
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}
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}
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/**
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* Error handler to use during stream_socket_client() call
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*
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* One stream_socket_client() call may produce *multiple* PHP warnings
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* (especially OpenSSL-related), we keep them in an array to later use for
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* the message of HTTP_Request2_ConnectionException
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*
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* @param int $errno error level
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* @param string $errstr error message
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*
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* @return bool
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*/
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protected function connectionWarningsHandler($errno, $errstr)
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{
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if ($errno & E_WARNING) {
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array_unshift($this->connectionWarnings, $errstr);
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}
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return true;
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}
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}
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?>
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