/**
* Composes message to binary data to send it via stream
*
* @param SocketMessage $socketMessage
*
* @return string
*
*/
public function compose(SocketMessage $socketMessage)
{
//Correlation + flag length + command length
$messageLength = MessageConfiguration::HEADER_LENGTH;
$doAuthorization = $socketMessage->getCredentials() ? true : false;
$authorizationLength = 0;
if ($doAuthorization) {
$authorizationLength = 1 + strlen($socketMessage->getCredentials()->getUsername()) + 1 + strlen($socketMessage->getCredentials()->getPassword());
}
$dataToSend = $socketMessage->getData();
if ($dataToSend) {
$dataToSend = $dataToSend->serializeToString();
$messageLength += strlen($dataToSend);
}
$wholeMessageLength = $messageLength + $authorizationLength + MessageConfiguration::INT_32_LENGTH;
$buffer = new Buffer($wholeMessageLength);
$buffer->writeInt32LE($messageLength + $authorizationLength, 0);
$buffer->writeInt8($socketMessage->getMessageType()->getType(), MessageConfiguration::MESSAGE_TYPE_OFFSET);
$buffer->writeInt8($doAuthorization ? MessageConfiguration::FLAG_AUTHORIZATION : MessageConfiguration::FLAGS_NONE, MessageConfiguration::FLAG_OFFSET);
$buffer->write(hex2bin($this->createCorrelationID($socketMessage->getCorrelationID())), MessageConfiguration::CORRELATION_ID_OFFSET);
if ($doAuthorization) {
$usernameLength = strlen($socketMessage->getCredentials()->getUsername());
$passwordLength = strlen($socketMessage->getCredentials()->getPassword());
$buffer->writeInt8($usernameLength, MessageConfiguration::DATA_OFFSET);
$buffer->write($socketMessage->getCredentials()->getUsername(), MessageConfiguration::DATA_OFFSET + 1);
$buffer->writeInt8($passwordLength, MessageConfiguration::DATA_OFFSET + 1 + $usernameLength);
$buffer->write($socketMessage->getCredentials()->getPassword(), MessageConfiguration::DATA_OFFSET + 1 + $usernameLength + 1);
}
if ($dataToSend) {
$buffer->write($dataToSend, MessageConfiguration::DATA_OFFSET + $authorizationLength);
}
return (string) $buffer;
}
/**
* @test
*/
public function it_should_decompose_empty_message()
{
$wholeMessageLength = 0 + MessageConfiguration::INT_32_LENGTH + MessageConfiguration::HEADER_LENGTH;
$buffer = new Buffer($wholeMessageLength);
$buffer->writeInt32LE(18, 0);
$buffer->writeInt8(MessageType::PING, MessageConfiguration::MESSAGE_TYPE_OFFSET);
$buffer->writeInt8(MessageConfiguration::FLAGS_NONE, MessageConfiguration::FLAG_OFFSET);
$buffer->write(hex2bin('12350000000000000000000000000000'), MessageConfiguration::CORRELATION_ID_OFFSET);
PHPUnit_Framework_Assert::assertEquals('done', $this->messageDecomposer->decomposeMessage((string) $buffer));
}
public function testWriteInt32LE()
{
$buffer = new Buffer(4);
$buffer->writeInt32LE(0.0, 0);
$this->assertSame(pack('V', 0.0), (string) $buffer);
}
