Class HttpSocket

Cake network socket connection class.

Core base class for HTTP network communication. HttpSocket can be used as an Object Oriented replacement for cURL in many places.

Object

CakeSocket

HttpSocket

Package: cake\cake\libs
Copyright: Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
License: License (http://www.opensource.org/licenses/mit-license.php)
Location: http_socket.php

Properties summary

$config public

array

Default configuration settings for the HttpSocket
$description public

string

Object description
$lineBreak public

string

String that represents a line break.
$quirksMode public

boolean

When one activates the $quirksMode by setting it to true, all checks meant to enforce RFC 2616 (HTTP/1.1 specs). will be disabled and additional measures to deal with non-standard responses will be enabled.
$request public

array

The default values to use for a request
$response public

array

The default structure for storing the response

Inherited Properties

_baseConfig, connected, connection, lastError

Method Summary

__construct() public

Build an HTTP Socket using the specified configuration.
_buildHeader() public

Builds the header.
_buildRequestLine() public

Builds a request line according to HTTP/1.1 specs. Activate quirks mode to work outside specs.
_buildUri() public

Takes a $uri array and turns it into a fully qualified URL string
_configUri() public

Parses and sets the specified URI into current request configuration.
_decodeBody() public

Generic function to decode a $body with a given $encoding. Returns either an array with the keys 'body' and 'header' or false on failure.
_decodeChunkedBody() public

Decodes a chunked message $body and returns either an array with the keys 'body' and 'header' or false as a result.
_escapeToken() public

Escapes a given $token according to RFC 2616 (HTTP 1.1 specs)
_httpSerialize() public

Serializes an array for transport.
_parseHeader() public

Parses an array based header.
_parseQuery() public

This function can be thought of as a reverse to PHP5's http_build_query(). It takes a given query string and turns it into an array and supports nesting by using the php bracket syntax. So this menas you can parse queries like:
_parseResponse() public

Parses the given message and breaks it down in parts.
_parseUri() public

Parses the given URI and breaks it down into pieces as an indexed array with elements such as 'scheme', 'port', 'query'.
_tokenEscapeChars() public

Gets escape chars according to RFC 2616 (HTTP 1.1 specs).
_unescapeToken() public

Unescapes a given $token according to RFC 2616 (HTTP 1.1 specs)
buildCookies() public

Builds cookie headers for a request.
delete() public

Issues a DELETE request to the specified URI, query, and request.
get() public

Issues a GET request to the specified URI, query, and request.
parseCookies() public

Parses cookies in response headers.
post() public

Issues a POST request to the specified URI, query, and request.
put() public

Issues a PUT request to the specified URI, query, and request.
request() public

Issue the specified request. HttpSocket::get() and HttpSocket::post() wrap this method and provide a more granular interface.
reset() public

Resets the state of this HttpSocket instance to it's initial state (before Object::__construct got executed) or does the same thing partially for the request and the response property only.
url() public

Normalizes urls into a $uriTemplate. If no template is provided a default one will be used. Will generate the url using the current config information.

Method Detail

__construct() public ¶

__construct( mixed $config = array() )

Build an HTTP Socket using the specified configuration.

You can use a url string to set the url and use default configurations for all other options:

$http =& new HttpSocket('http://cakephp.org/');

Or use an array to configure multiple options:

{{{ $http =& new HttpSocket(array( 'host' => 'cakephp.org', 'timeout' => 20 )); }}}

See HttpSocket::$config for options that can be used.

Parameters

mixed $config optional array(): Configuration information, either a string url or an array of options.

Overrides

CakeSocket::__construct()

_buildHeader() public ¶

_buildHeader( array $header , $mode = 'standard' )

Builds the header.

Parameters

array $header: Header to build
$mode optional 'standard'

Returns

string
Header built from array

_buildRequestLine() public ¶

_buildRequestLine( array $request = array() , string $versionToken = 'HTTP/1.1' )

Builds a request line according to HTTP/1.1 specs. Activate quirks mode to work outside specs.

Parameters

array $request optional array(): Needs to contain a 'uri' key. Should also contain a 'method' key, otherwise defaults to GET.
string $versionToken optional 'HTTP/1.1': The version token to use, defaults to HTTP/1.1

Returns

string
Request line

_buildUri() public ¶

_buildUri( mixed $uri = array() , string $uriTemplate = '%scheme://%user:%pass@%host:%port/%path?%query#%fragment' )

Takes a $uri array and turns it into a fully qualified URL string

Parameters

mixed $uri optional array(): Either A $uri array, or a request string. Will use $this->config if left empty.
string $uriTemplate optional '%scheme://%user:%pass@%host:%port/%path?%query#%fragment': The Uri template/format to use.

Returns

mixed
A fully qualified URL formated according to $uriTemplate, or false on failure

_configUri() public ¶

_configUri( mixed $uri = null )

Parses and sets the specified URI into current request configuration.

Parameters

mixed $uri optional null: URI, See HttpSocket::_parseUri()

Returns

array
Current configuration settings

_decodeBody() public ¶

_decodeBody( string $body , mixed $encoding = 'chunked' )

Generic function to decode a $body with a given $encoding. Returns either an array with the keys 'body' and 'header' or false on failure.

Parameters

string $body: A string continaing the body to decode.
mixed $encoding optional 'chunked': Can be false in case no encoding is being used, or a string representing the encoding.

Returns

mixed
Array of response headers and body or false.

_decodeChunkedBody() public ¶

_decodeChunkedBody( string $body )

Decodes a chunked message $body and returns either an array with the keys 'body' and 'header' or false as a result.

Parameters

string $body: A string continaing the chunked body to decode.

Returns

mixed
Array of response headers and body or false.

_escapeToken() public ¶

_escapeToken( string $token , $chars = null )

Escapes a given $token according to RFC 2616 (HTTP 1.1 specs)

Parameters

string $token: Token to escape
$chars optional null

Returns

string
Escaped token

_httpSerialize() public ¶

_httpSerialize( array $data = array() )

Serializes an array for transport.

Parameters

array $data optional array(): Data to serialize

Returns

string
Serialized variable

_parseHeader() public ¶

_parseHeader( array $header )

Parses an array based header.

Parameters

array $header: Header as an indexed array (field => value)

Returns

array
Parsed header

_parseQuery() public ¶

_parseQuery( mixed $query )

This function can be thought of as a reverse to PHP5's http_build_query(). It takes a given query string and turns it into an array and supports nesting by using the php bracket syntax. So this menas you can parse queries like:

?key[subKey]=value
?key[]=value1&key[]=value2

A leading '?' mark in $query is optional and does not effect the outcome of this function. For the complete capabilities of this implementation take a look at HttpSocketTest::testparseQuery()

Parameters

mixed $query: A query string to parse into an array or an array to return directly "as is"

Returns

array

The $query parsed into a possibly multi-level array. If an empty $query is given, an empty array is returned.

_parseResponse() public ¶

_parseResponse( string $message )

Parses the given message and breaks it down in parts.

Parameters

string $message: Message to parse

Returns

array
Parsed message (with indexed elements such as raw, status, header, body)

_parseUri() public ¶

_parseUri( string $uri = null , mixed $base = array() )

Parses the given URI and breaks it down into pieces as an indexed array with elements such as 'scheme', 'port', 'query'.

Parameters

string $uri optional null: URI to parse
mixed $base optional array(): If true use default URI config, otherwise indexed array to set 'scheme', 'host', 'port', etc.

Returns

array
Parsed URI

_tokenEscapeChars() public ¶

_tokenEscapeChars( boolean $hex = true , $chars = null )

Gets escape chars according to RFC 2616 (HTTP 1.1 specs).

Parameters

boolean $hex optional true: true to get them as HEX values, false otherwise
$chars optional null

Returns

array
Escape chars

_unescapeToken() public ¶

_unescapeToken( string $token , $chars = null )

Unescapes a given $token according to RFC 2616 (HTTP 1.1 specs)

Parameters

string $token: Token to unescape
$chars optional null

Returns

string
Unescaped token

buildCookies() public ¶

buildCookies( array $cookies )

Builds cookie headers for a request.

Parameters

array $cookies: Array of cookies to send with the request.

Returns

string
Cookie header string to be sent with the request.

delete() public ¶

delete( mixed $uri = null , array $data = array() , array $request = array() )

Issues a DELETE request to the specified URI, query, and request.

Parameters

mixed $uri optional null: URI to request (see HttpSocket::_parseUri())
array $data optional array(): Query to append to URI
array $request optional array(): An indexed array with indexes such as 'method' or uri

Returns

mixed
Result of request

get() public ¶

get( mixed $uri = null , array $query = array() , array $request = array() )

Issues a GET request to the specified URI, query, and request.

Using a string uri and an array of query string parameters:

$response = $http->get('http://google.com/search', array('q' => 'cakephp', 'client' => 'safari'));

Would do a GET request to http://google.com/search?q=cakephp&client=safari

You could express the same thing using a uri array and query string parameters:

{{{ $response = $http->get( array('host' => 'google.com', 'path' => '/search'), array('q' => 'cakephp', 'client' => 'safari') ); }}}

Parameters

mixed $uri optional null: URI to request. Either a string uri, or a uri array, see HttpSocket::_parseUri()
array $query optional array(): Querystring parameters to append to URI
array $request optional array(): An indexed array with indexes such as 'method' or uri

Returns

mixed
Result of request, either false on failure or the response to the request.

parseCookies() public ¶

parseCookies( array $header )

Parses cookies in response headers.

Parameters

array $header: Header array containing one ore more 'Set-Cookie' headers.

Returns

mixed
Either false on no cookies, or an array of cookies received.

post() public ¶

post( mixed $uri = null , array $data = array() , array $request = array() )

Issues a POST request to the specified URI, query, and request.

post() can be used to post simple data arrays to a url:

{{{ $response = $http->post('http://example.com', array( 'username' => 'batman', 'password' => 'bruce_w4yne' )); }}}

Parameters

mixed $uri optional null: URI to request. See HttpSocket::_parseUri()
array $data optional array(): Array of POST data keys and values.
array $request optional array(): An indexed array with indexes such as 'method' or uri

Returns

mixed
Result of request, either false on failure or the response to the request.

put() public ¶

put( mixed $uri = null , array $data = array() , array $request = array() )

Issues a PUT request to the specified URI, query, and request.

Parameters

mixed $uri optional null: URI to request, See HttpSocket::_parseUri()
array $data optional array(): Array of PUT data keys and values.
array $request optional array(): An indexed array with indexes such as 'method' or uri

Returns

mixed
Result of request

request() public ¶

request( mixed $request = array() )

Issue the specified request. HttpSocket::get() and HttpSocket::post() wrap this method and provide a more granular interface.

Parameters

mixed $request optional array(): Either an URI string, or an array defining host/uri

Returns

mixed
false on error, request body on success

reset() public ¶

reset( boolean $full = true )

Resets the state of this HttpSocket instance to it's initial state (before Object::__construct got executed) or does the same thing partially for the request and the response property only.

Parameters

boolean $full optional true: If set to false only HttpSocket::response and HttpSocket::request are reseted

Returns

boolean
True on success

Overrides

CakeSocket::reset()

url() public ¶

url( mixed $url = null , string $uriTemplate = null )

Normalizes urls into a $uriTemplate. If no template is provided a default one will be used. Will generate the url using the current config information.

Usage:

After configuring part of the request parameters, you can use url() to generate urls.

{{{ $http->configUri('http://www.cakephp.org'); $url = $http->url('/search?q=bar'); }}}

Would return http://www.cakephp.org/search?q=bar

url() can also be used with custom templates:

$url = $http->url('http://www.cakephp/search?q=socket', '/%path?%query');

Would return /search?q=socket.

Parameters

mixed $url optional null: Either a string or array of url options to create a url with.
string $uriTemplate optional null: A template string to use for url formatting.

Returns

mixed
Either false on failure or a string containing the composed url.

Methods inherited from CakeSocket

__destruct() public ¶

__destruct( )

Destructor, used to disconnect from current connection.

abort() public ¶

abort( )

Abort socket operation.

Returns

boolean
Success

address() public ¶

address( )

Get the IP address of the current connection.

Returns

string
IP address

addresses() public ¶

addresses( )

Get all IP addresses associated with the current connection.

Returns

array
IP addresses

connect() public ¶

connect( )

Connect the socket to the given host and port.

Returns

boolean
Success

disconnect() public ¶

disconnect( )

Disconnect the socket from the current connection.

Returns

boolean
Success

host() public ¶

host( )

Get the host name of the current connection.

Returns

string
Host name

lastError() public ¶

lastError( )

Get the last error as a string.

Returns

string
Last error

read() public ¶

read( integer $length = 1024 )

Read data from the socket. Returns false if no data is available or no connection could be established.

Parameters

integer $length optional 1024: Optional buffer length to read; defaults to 1024

Returns

mixed
Socket data

setLastError() public ¶

setLastError( integer $errNum , string $errStr )

Set the last error.

Parameters

integer $errNum: Error code
string $errStr: Error string

write() public ¶

write( string $data )

Write data to the socket.

Parameters

string $data: The data to write to the socket

Returns

boolean
Success

Methods inherited from Object

Object() public ¶

Object( )

A hack to support __construct() on PHP 4 Hint: descendant classes have no PHP4 class_name() constructors, so this constructor gets called first and calls the top-layer __construct() which (if present) should call parent::__construct()

Returns

Object

__openPersistent() public ¶

__openPersistent( string $name , string $type = null )

Open the persistent class file for reading Used by Object::_persist()

Parameters

string $name: Name of persisted class
string $type optional null: Type of persistance (e.g: registry)

_persist() public ¶

_persist( string $name , string $return , $object , $type = null )

Checks for a persistent class file, if found file is opened and true returned If file is not found a file is created and false returned If used in other locations of the model you should choose a unique name for the persistent file There are many uses for this method, see manual for examples

Parameters

string $name: name of the class to persist
string $return: $object the object to persist
$object
$type optional null

Returns

boolean
Success

_savePersistent() public ¶

_savePersistent( string $name , object $object )

You should choose a unique name for the persistent file

There are many uses for this method, see manual for examples

Parameters

string $name: name used for object to cache
object $object: the object to persist

Returns

boolean
true on save, throws error if file can not be created

_set() public ¶

_set( array $properties = array() )

Allows setting of multiple properties of the object in a single line of code. Will only set properties that are part of a class declaration.

Parameters

array $properties optional array(): An associative array containing properties and corresponding values.

_stop() public ¶

_stop( $status = 0 )

Stop execution of the current script. Wraps exit() making testing easier.

Parameters

$status optional 0: http://php.net/exit for values

cakeError() public ¶

cakeError( string $method , array $messages = array() )

Used to report user friendly errors. If there is a file app/error.php or app/app_error.php this file will be loaded error.php is the AppError class it should extend ErrorHandler class.

Parameters

string $method: Method to be called in the error class (AppError or ErrorHandler classes)
array $messages optional array(): Message that is to be displayed by the error class

Returns

error
message

dispatchMethod() public ¶

dispatchMethod( string $method , array $params = array() )

Calls a method on this object with the given parameters. Provides an OO wrapper for call_user_func_array

Parameters

string $method: Name of the method to call
array $params optional array(): Parameter list to use when calling $method

Returns

mixed
Returns the result of the method call

log() public ¶

log( string $msg , integer $type = LOG_ERROR )

Convience method to write a message to CakeLog. See CakeLog::write() for more information on writing to logs.

Parameters

string $msg: Log message
integer $type optional LOG_ERROR: Error type constant. Defined in app/config/core.php.

Returns

boolean
Success of log write

requestAction() public ¶

requestAction( mixed $url , array $extra = array() )

Calls a controller's method from any location. Can be used to connect controllers together or tie plugins into a main application. requestAction can be used to return rendered views or fetch the return value from controller actions.

Parameters

mixed $url: String or array-based url.
array $extra optional array(): if array includes the key "return" it sets the AutoRender to true.

Returns

mixed

Boolean true or false on success/failure, or contents of rendered action if 'return' is set in $extra.

toString() public ¶

toString( )

Object-to-string conversion. Each class can override this method as necessary.

Returns

string
The name of this class

Properties detail

`$config` ¶

public array

Default configuration settings for the HttpSocket

array(
    'persistent' => false,
    'host' => 'localhost',
    'protocol' => 'tcp',
    'port' => 80,
    'timeout' => 30,
    'request' => array(
        'uri' => array(
            'scheme' => 'http',
            'host' => 'localhost',
            'port' => 80
        ),
        'auth' => array(
            'method' => 'Basic',
            'user' => null,
            'pass' => null
        ),
        'cookies' => array()
    )
)

`$description` ¶

public string

Object description

'HTTP-based DataSource Interface'

`$lineBreak` ¶

public string

String that represents a line break.

"\r\n"

`$quirksMode` ¶

public boolean

When one activates the $quirksMode by setting it to true, all checks meant to enforce RFC 2616 (HTTP/1.1 specs). will be disabled and additional measures to deal with non-standard responses will be enabled.

false

`$request` ¶

public array

The default values to use for a request

array(
    'method' => 'GET',
    'uri' => array(
        'scheme' => 'http',
        'host' => null,
        'port' => 80,
        'user' => null,
        'pass' => null,
        'path' => null,
        'query' => null,
        'fragment' => null
    ),
    'auth' => array(
        'method' => 'Basic',
        'user' => null,
        'pass' => null
    ),
    'version' => '1.1',
    'body' => '',
    'line' => null,
    'header' => array(
        'Connection' => 'close',
        'User-Agent' => 'CakePHP'
    ),
    'raw' => null,
    'cookies' => array()
)

`$response` ¶

public array

The default structure for storing the response

array(
    'raw' => array(
        'status-line' => null,
        'header' => null,
        'body' => null,
        'response' => null
    ),
    'status' => array(
        'http-version' => null,
        'code' => null,
        'reason-phrase' => null
    ),
    'header' => array(),
    'body' => '',
    'cookies' => array()
)

Classes

Functions

Class HttpSocket

Properties summary

Inherited Properties

Method Summary

__construct() public

_buildHeader() public

_buildRequestLine() public

_buildUri() public

_configUri() public

_decodeBody() public

_decodeChunkedBody() public

_escapeToken() public

_httpSerialize() public

_parseHeader() public

_parseQuery() public

_parseResponse() public

_parseUri() public

_tokenEscapeChars() public

_unescapeToken() public

buildCookies() public

delete() public

get() public

parseCookies() public

post() public

put() public

request() public

reset() public

url() public

Method Detail

__construct() public ¶

Parameters

Overrides

_buildHeader() public ¶

Parameters

Returns

_buildRequestLine() public ¶

Parameters

Returns

_buildUri() public ¶

Parameters

Returns

_configUri() public ¶

Parameters

Returns

_decodeBody() public ¶

Parameters

Returns

_decodeChunkedBody() public ¶

Parameters

Returns

_escapeToken() public ¶

Parameters

Returns

_httpSerialize() public ¶

Parameters

Returns

_parseHeader() public ¶

Parameters

Returns

_parseQuery() public ¶

Parameters

Returns

_parseResponse() public ¶

Parameters

Returns

_parseUri() public ¶

Parameters

Returns

_tokenEscapeChars() public ¶

Parameters

Returns

_unescapeToken() public ¶

Parameters

Returns

buildCookies() public ¶

Parameters

Returns

delete() public ¶