PortTester::isAvailable() - Code Metrics - belgattitude/pjbserver-tools - Measure and Improve Code Quality continuously with Scrutinizer

PortTester::isAvailable() C
last analyzed 2021-04-25 17:41 UTC

↳ Parent: PortTester

Complexity

Conditions	15
Paths	41

Size

Total Lines	84
Code Lines	61

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	61
c	1
b	0
f	0
dl	0
loc	84
rs	5.9166
cc	15
nc	41
nop	4

How to fix Long Method Complexity

<?php

declare(strict_types=1);

namespace PjbServer\Tools\Network;

class PortTester
{
    const BACKEND_STREAM_SOCKET = 'stream_socket';
    const BACKEND_SOCKET_CREATE = 'socket_create';
    const BACKEND_PFSOCKOPEN = 'pfsockopen';
    const BACKEND_CURL = 'curl';

    const PROTOCOL_TCP = 'tcp';
    const PROTOCOL_UDP = 'udp';
    const PROTOCOL_HTTP = 'http';
    const PROTOCOL_HTTPS = 'https';

    /**
     * @var string[]
     */
    protected $supportedBackends = [self::BACKEND_CURL, self::BACKEND_PFSOCKOPEN, self::BACKEND_SOCKET_CREATE, self::BACKEND_STREAM_SOCKET];

    /**
     * @var string[]
     */
    protected $supportedProtocols = [self::PROTOCOL_HTTP, self::PROTOCOL_HTTPS, self::PROTOCOL_TCP, self::PROTOCOL_UDP];

    /**
     * @var array<string, mixed>
     */
    protected $defaults = [
        'backend' => null,
        'timeout' => 1,
        'close_timeout_ms' => null
    ];

    /**
     * @var array
     */
    protected $options;

    /**
     * Constructor.
     *
     * <code>
     * $options = [
     *      'backend' => PortTester::BACKEND_STREAM_SOCKET,
     *      // connection timeout in seconds
     *      'timeout' => 1,
     *      // timeout to wait for connection to be closed
     *      // properly in milliseconds or null to disable
     *      // Use when TIME_WAIT is too long
     *      'close_timeout_ms => 300
     * ];
     * $portTester = new PortTester($options);
     * </code>
     *
     * @throws \InvalidArgumentException
     *
     * @param array<string, mixed> $options
     */
    public function __construct(array $options = [])
    {
        $this->options = array_merge($this->defaults, $options);
        if ($this->options['backend'] === null) {
            if ($this->isCurlAvailable()) {
                $this->options['backend'] = self::BACKEND_CURL;
            } else {
                $this->options['backend'] = self::BACKEND_STREAM_SOCKET;
            }
        }
        $this->options['backend'] = strtolower($this->options['backend']);
        if (!in_array($this->options['backend'], $this->supportedBackends, true)) {
            throw new \InvalidArgumentException("Unsupported backend '" . $this->options['backend'] . "'");
        }
    }

    /**
     * Check if TCP port is available for binding.
     *
     * @throws \InvalidArgumentException
     * @throws \RuntimeException
     *
     * @param string   $host
     * @param int      $port
     * @param string   $protocol
     * @param int|null $timeout
     *
     * @return bool
     */
    public function isAvailable(string $host, int $port, string $protocol = 'http', ?int $timeout = null): bool
    {
        if (!in_array($protocol, $this->supportedProtocols, true)) {
            throw new \InvalidArgumentException("Unsupported protocol '$protocol'");
        }

        if ($timeout === null) {
            $timeout = $this->options['timeout'];
        }

        $available = false;
        $sock = null;

        $backend = $this->options['backend'];
        switch ($backend) {
            case self::BACKEND_PFSOCKOPEN:
                $sock = @pfsockopen("$protocol://$host", $port, $errno, $errstr, $timeout);
                if ($sock === false) {
                    $available = true;
                } else {
                    fclose($sock);
                }
                break;

            case self::BACKEND_SOCKET_CREATE:
                $timeout = 0;
                $protocolMap = ['tcp' => SOL_TCP, 'udp' => SOL_UDP];
                if (!array_key_exists($protocol, $protocolMap)) {
                    throw new \RuntimeException("Backedn socket_create does not support protocol $protocol");
                }
                $proto = $protocolMap[$protocol];

                $sock = socket_create(AF_INET, SOCK_STREAM, $proto);
                socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, ['sec' => $timeout, 'usec' => 0]);
                if (!@socket_connect($sock, $host, $port)) {
                    $available = true;
                } else {
                    socket_close($sock);
                }
                break;

            case self::BACKEND_STREAM_SOCKET:
                $flags = STREAM_CLIENT_CONNECT; //  & ~STREAM_CLIENT_PERSISTENT
                $sock = @stream_socket_client("$protocol://$host:$port", $errno, $errstr, $timeout, $flags);
                if (!$sock) {

                    $available = true;
                } else {
                    if (!stream_socket_shutdown($sock, STREAM_SHUT_RDWR)) {
                        throw new \RuntimeException('Cannot properly close socket stream.');
                    }
                    fclose($sock);
                }
                break;

            case 'curl':
                if (!$this->isCurlAvailable()) {
                    throw new \RuntimeException('Curl not available');
                }
                $curl_options = [
                    CURLOPT_URL => "http://$host:$port",
                    CURLOPT_TIMEOUT => $timeout,
                    CURLOPT_RETURNTRANSFER => true,
                    CURLOPT_FAILONERROR => true,
                    CURLOPT_PORT => $port,
                ];

                $curl_handle = curl_init();
                curl_setopt_array($curl_handle, $curl_options);
                curl_exec($curl_handle);
                $errno = curl_errno($curl_handle);
                if ($errno != 0) {
                    $available = true;
                }
                curl_close($curl_handle);
                break;
            default:
                throw new \InvalidArgumentException("Unsupported backend: '$backend'.");
        }
        unset($sock);
        if ($this->options['close_timeout_ms'] > 0) {
            usleep($this->options['close_timeout_ms'] * 1000);
        }

        return $available;
    }

    protected function isCurlAvailable(): bool
    {
        return function_exists('curl_version');
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace PjbServer\Tools\Network;
6
7			class PortTester
8			{
9			const BACKEND_STREAM_SOCKET = 'stream_socket';
10			const BACKEND_SOCKET_CREATE = 'socket_create';
11			const BACKEND_PFSOCKOPEN = 'pfsockopen';
12			const BACKEND_CURL = 'curl';
13
14			const PROTOCOL_TCP = 'tcp';
15			const PROTOCOL_UDP = 'udp';
16			const PROTOCOL_HTTP = 'http';
17			const PROTOCOL_HTTPS = 'https';
18
19			/**
20			* @var string[]
21			*/
22			protected $supportedBackends = [self::BACKEND_CURL, self::BACKEND_PFSOCKOPEN, self::BACKEND_SOCKET_CREATE, self::BACKEND_STREAM_SOCKET];
23
24			/**
25			* @var string[]
26			*/
27			protected $supportedProtocols = [self::PROTOCOL_HTTP, self::PROTOCOL_HTTPS, self::PROTOCOL_TCP, self::PROTOCOL_UDP];
28
29			/**
30			* @var array<string, mixed>
31			*/
32			protected $defaults = [
33			'backend' => null,
34			'timeout' => 1,
35			'close_timeout_ms' => null
36			];
37
38			/**
39			* @var array
40			*/
41			protected $options;
42
43			/**
44			* Constructor.
45			*
46			* <code>
47			* $options = [
48			* 'backend' => PortTester::BACKEND_STREAM_SOCKET,
49			* // connection timeout in seconds
50			* 'timeout' => 1,
51			* // timeout to wait for connection to be closed
52			* // properly in milliseconds or null to disable
53			* // Use when TIME_WAIT is too long
54			* 'close_timeout_ms => 300
55			* ];
56			* $portTester = new PortTester($options);
57			* </code>
58			*
59			* @throws \InvalidArgumentException
60			*
61			* @param array<string, mixed> $options
62			*/
63			public function __construct(array $options = [])
64			{
65			$this->options = array_merge($this->defaults, $options);
66			if ($this->options['backend'] === null) {
67			if ($this->isCurlAvailable()) {
68			$this->options['backend'] = self::BACKEND_CURL;
69			} else {
70			$this->options['backend'] = self::BACKEND_STREAM_SOCKET;
71			}
72			}
73			$this->options['backend'] = strtolower($this->options['backend']);
74			if (!in_array($this->options['backend'], $this->supportedBackends, true)) {
75			throw new \InvalidArgumentException("Unsupported backend '" . $this->options['backend'] . "'");
76			}
77			}
78
79			/**
80			* Check if TCP port is available for binding.
81			*
82			* @throws \InvalidArgumentException
83			* @throws \RuntimeException
84			*
85			* @param string $host
86			* @param int $port
87			* @param string $protocol
88			* @param int\|null $timeout
89			*
90			* @return bool
91			*/
92			public function isAvailable(string $host, int $port, string $protocol = 'http', ?int $timeout = null): bool
93			{
94			if (!in_array($protocol, $this->supportedProtocols, true)) {
95			throw new \InvalidArgumentException("Unsupported protocol '$protocol'");
96			}
97
98			if ($timeout === null) {
99			$timeout = $this->options['timeout'];
100			}
101
102			$available = false;
103			$sock = null;
104
105			$backend = $this->options['backend'];
106			switch ($backend) {
107			case self::BACKEND_PFSOCKOPEN:
108			$sock = @pfsockopen("$protocol://$host", $port, $errno, $errstr, $timeout);
109			if ($sock === false) {
110			$available = true;
111			} else {
112			fclose($sock);
113			}
114			break;
115
116			case self::BACKEND_SOCKET_CREATE:
117			$timeout = 0;
118			$protocolMap = ['tcp' => SOL_TCP, 'udp' => SOL_UDP];
119			if (!array_key_exists($protocol, $protocolMap)) {
120			throw new \RuntimeException("Backedn socket_create does not support protocol $protocol");
121			}
122			$proto = $protocolMap[$protocol];
123
124			$sock = socket_create(AF_INET, SOCK_STREAM, $proto);
125			socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, ['sec' => $timeout, 'usec' => 0]);
126			if (!@socket_connect($sock, $host, $port)) {
127			$available = true;
128			} else {
129			socket_close($sock);
130			}
131			break;
132
133			case self::BACKEND_STREAM_SOCKET:
134			$flags = STREAM_CLIENT_CONNECT; // & ~STREAM_CLIENT_PERSISTENT
135			$sock = @stream_socket_client("$protocol://$host:$port", $errno, $errstr, $timeout, $flags);
136			if (!$sock) {
			0 ignored issues – show introduced 2021-04-25 11:35 UTC by Report Bug Copy Issue Report `$sock` is of type `false\|resource`, thus it always evaluated to `false`. Loading history...
137			$available = true;
138			} else {
139			if (!stream_socket_shutdown($sock, STREAM_SHUT_RDWR)) {
140			throw new \RuntimeException('Cannot properly close socket stream.');
141			}
142			fclose($sock);
143			}
144			break;
145
146			case 'curl':
147			if (!$this->isCurlAvailable()) {
148			throw new \RuntimeException('Curl not available');
149			}
150			$curl_options = [
151			CURLOPT_URL => "http://$host:$port",
152			CURLOPT_TIMEOUT => $timeout,
153			CURLOPT_RETURNTRANSFER => true,
154			CURLOPT_FAILONERROR => true,
155			CURLOPT_PORT => $port,
156			];
157
158			$curl_handle = curl_init();
159			curl_setopt_array($curl_handle, $curl_options);
160			curl_exec($curl_handle);
161			$errno = curl_errno($curl_handle);
162			if ($errno != 0) {
163			$available = true;
164			}
165			curl_close($curl_handle);
166			break;
167			default:
168			throw new \InvalidArgumentException("Unsupported backend: '$backend'.");
169			}
170			unset($sock);
171			if ($this->options['close_timeout_ms'] > 0) {
172			usleep($this->options['close_timeout_ms'] * 1000);
173			}
174
175			return $available;
176			}
177
178			protected function isCurlAvailable(): bool
179			{
180			return function_exists('curl_version');
181			}
182			}
183

belgattitude / pjbserver-tools

PortTester::isAvailable() C last analyzed 2021-04-25 17:41 UTC

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

Long Method

Duplication Side-by-Side

Filter issues like

PortTester::isAvailable() C
last analyzed 2021-04-25 17:41 UTC