Class Socket
CakePHP network socket connection class.
Core base class for network communication.
Property Summary
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$_config protected
arrayRuntime config
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$_configInitialized protected
boolWhether the config property has already been configured with defaults
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$_connectionErrors protected
arrayUsed to capture connection warnings which can happen when there are SSL errors for example.
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$_defaultConfig protected
arrayDefault configuration settings for the socket connection
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$_encryptMethods protected
arrayContains all the encryption methods available
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$connected public
boolThis boolean contains the current state of the Socket class
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$connection public
resource|nullReference to socket connection resource
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$description public
stringObject description
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$encrypted public
boolTrue if the socket stream is encrypted after a Cake\Network\Socket::enableCrypto() call
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$lastError public
arrayThis variable contains an array with the last error number (num) and string (str)
Method Summary
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__construct() public
Constructor.
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__destruct() public
Destructor, used to disconnect from current connection.
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_configDelete() protected
Deletes a single config key.
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_configRead() protected
Reads a config key.
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_configWrite() protected
Writes a config key.
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_connectionErrorHandler() protected
socket_stream_client() does not populate errNum, or $errStr when there are connection errors, as in the case of SSL verification failure.
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_setSslContext() protected
Configure the SSL context options.
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address() public
Get the IP address of the current connection.
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addresses() public
Get all IP addresses associated with the current connection.
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config() public deprecated
Gets/Sets the config.
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configShallow() public
Merge provided config with existing config. Unlike
config()which does a recursive merge for nested keys, this method does a simple merge. -
connect() public
Connect the socket to the given host and port.
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context() public
Get the connection context.
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disconnect() public
Disconnect the socket from the current connection.
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enableCrypto() public
Encrypts current stream socket, using one of the defined encryption methods
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getConfig() public
Returns the config.
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host() public
Get the host name of the current connection.
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lastError() public
Get the last error as a string.
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read() public
Read data from the socket. Returns false if no data is available or no connection could be established.
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reset() public
Resets the state of this Socket instance to it's initial state (before Object::__construct got executed)
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setConfig() public
Sets the config.
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setLastError() public
Set the last error.
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write() public
Write data to the socket.
Method Detail
__construct() ¶ public
__construct(array $config = [])Constructor.
Parameters
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array$config optional Socket configuration, which will be merged with the base configuration
See Also
_configDelete() ¶ protected
_configDelete(string $key): voidDeletes a single config key.
Parameters
-
string$key Key to delete.
Returns
voidThrows
Cake\Core\Exception\Exceptionif attempting to clobber existing config
_configRead() ¶ protected
_configRead(string|null $key): mixedReads a config key.
Parameters
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string|null$key Key to read.
Returns
mixed_configWrite() ¶ protected
_configWrite(string|array $key, mixed $value, bool|string $merge = false): voidWrites a config key.
Parameters
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string|array$key Key to write to.
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mixed$value Value to write.
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bool|string$merge optional True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false.
Returns
voidThrows
Cake\Core\Exception\Exceptionif attempting to clobber existing config
_connectionErrorHandler() ¶ protected
_connectionErrorHandler(int $code, string $message): voidsocket_stream_client() does not populate errNum, or $errStr when there are connection errors, as in the case of SSL verification failure.
Instead we need to handle those errors manually.
Parameters
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int$code Code number.
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string$message Message.
Returns
void_setSslContext() ¶ protected
_setSslContext(string $host): voidConfigure the SSL context options.
Parameters
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string$host The host name being connected to.
Returns
voidaddresses() ¶ public
addresses(): arrayGet all IP addresses associated with the current connection.
Returns
arrayconfig() ¶ public
config(string|array|null $key = null, mixed|null $value = null, bool $merge = true): mixedGets/Sets the config.
Usage
Reading the whole config:
$this->config();Reading a specific value:
$this->config('key');Reading a nested value:
$this->config('some.nested.key');Setting a specific value:
$this->config('key', $value);Setting a nested value:
$this->config('some.nested.key', $value);Updating multiple config settings at the same time:
$this->config(['one' => 'value', 'another' => 'value']);Parameters
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string|array|null$key optional The key to get/set, or a complete array of configs.
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mixed|null$value optional The value to set.
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bool$merge optional Whether to recursively merge or overwrite existing config, defaults to true.
Returns
mixedThrows
Cake\Core\Exception\ExceptionWhen trying to set a key that is invalid.
configShallow() ¶ public
configShallow(string|array $key, mixed|null $value = null): $thisMerge provided config with existing config. Unlike config() which does
a recursive merge for nested keys, this method does a simple merge.
Setting a specific value:
$this->configShallow('key', $value);Setting a nested value:
$this->configShallow('some.nested.key', $value);Updating multiple config settings at the same time:
$this->configShallow(['one' => 'value', 'another' => 'value']);Parameters
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string|array$key The key to set, or a complete array of configs.
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mixed|null$value optional The value to set.
Returns
$thisconnect() ¶ public
connect(): boolConnect the socket to the given host and port.
Returns
boolThrows
Cake\Network\Exception\SocketExceptiondisconnect() ¶ public
disconnect(): boolDisconnect the socket from the current connection.
Returns
boolenableCrypto() ¶ public
enableCrypto(string $type, string $clientOrServer = 'client', bool $enable = true): boolEncrypts current stream socket, using one of the defined encryption methods
Parameters
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string$type can be one of 'ssl2', 'ssl3', 'ssl23' or 'tls'
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string$clientOrServer optional can be one of 'client', 'server'. Default is 'client'
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bool$enable optional enable or disable encryption. Default is true (enable)
Returns
boolThrows
InvalidArgumentExceptionWhen an invalid encryption scheme is chosen.
Cake\Network\Exception\SocketExceptionWhen attempting to enable SSL/TLS fails
See Also
getConfig() ¶ public
getConfig(string|null $key = null, mixed $default = null): mixedReturns the config.
Usage
Reading the whole config:
$this->getConfig();Reading a specific value:
$this->getConfig('key');Reading a nested value:
$this->getConfig('some.nested.key');Reading with default value:
$this->getConfig('some-key', 'default-value');Parameters
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string|null$key optional The key to get or null for the whole config.
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mixed$default optional The return value when the key does not exist.
Returns
mixedread() ¶ public
read(int $length = 1024): mixedRead data from the socket. Returns false if no data is available or no connection could be established.
The bool false return value is deprecated and will be null in the next major. Please code respectively to be future proof.
Parameters
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int$length optional Optional buffer length to read; defaults to 1024
Returns
mixedreset() ¶ public
reset(array|null $state = null): boolResets the state of this Socket instance to it's initial state (before Object::__construct got executed)
Parameters
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array|null$state optional Array with key and values to reset
Returns
boolsetConfig() ¶ public
setConfig(string|array $key, mixed|null $value = null, bool $merge = true): $thisSets the config.
Usage
Setting a specific value:
$this->setConfig('key', $value);Setting a nested value:
$this->setConfig('some.nested.key', $value);Updating multiple config settings at the same time:
$this->setConfig(['one' => 'value', 'another' => 'value']);Parameters
-
string|array$key The key to set, or a complete array of configs.
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mixed|null$value optional The value to set.
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bool$merge optional Whether to recursively merge or overwrite existing config, defaults to true.
Returns
$thisThrows
Cake\Core\Exception\ExceptionWhen trying to set a key that is invalid.
setLastError() ¶ public
setLastError(int $errNum, string $errStr): voidSet the last error.
Parameters
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int$errNum Error code
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string$errStr Error string
Returns
voidwrite() ¶ public
write(string $data): int|falseWrite data to the socket.
The bool false return value is deprecated and will be int 0 in the next major. Please code respectively to be future proof.
Parameters
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string$data The data to write to the socket.
Returns
int|falseProperty Detail
$_configInitialized ¶ protected
Whether the config property has already been configured with defaults
Type
bool$_connectionErrors ¶ protected
Used to capture connection warnings which can happen when there are SSL errors for example.
Type
array$_encryptMethods ¶ protected
Contains all the encryption methods available
SSLv2 and SSLv3 are deprecated, and should not be used as they have several published vulnerablilities.
Type
array$encrypted ¶ public
True if the socket stream is encrypted after a Cake\Network\Socket::enableCrypto() call
Type
bool$lastError ¶ public
This variable contains an array with the last error number (num) and string (str)
Type
array