opensrs\Base::readData PHP Method

    private function readData(&$fh, $timeout = 5)
    {
        $len = 0;
        /* PHP doesn't have timeout for fread ... we just set the timeout for the socket */
        socket_set_timeout($fh, $timeout);
        $header = $this->readHeader($fh, $timeout);
        if (!$header || !isset($header['content-length']) || empty($header['content-length'])) {
            throw new Exception('oSRS Error - UNEXPECTED ERROR: No Content-Length header provided! Please make sure IP is whitelisted in RWI.');
        }
        $len = (int) $header['content-length'];
        $line = '';
        while (strlen($line) < $len) {
            $line .= fread($fh, $len);
            if ($this->_opsHandler->socketStatus($fh)) {
                return false;
            }
        }
        if ($line) {
            $buf = $line;
        } else {
            $buf = false;
        }
        $this->close_socket();
        return $buf;
    }