HttpClient::sendHeaders() - Code Metrics - simply-framework/application - Measure and Improve Code Quality continuously with Scrutinizer

HttpClient::sendHeaders() A
last analyzed 2018-12-18 13:48 UTC

↳ Parent: HttpClient

Complexity

Conditions	3
Paths	3

Size

Total Lines	12
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	3

Importance

Changes

Metric	Value
cc	3
eloc	8
nc	3
nop	1
dl	0
loc	12
ccs	9
cts	9
cp	1
crap	3
rs	10
c	0
b	0
f	0

<?php

namespace Simply\Application;

use Psr\Http\Message\ResponseInterface;

/**
 * The http client that facilitates sending responses to the browser client.
 * @author Riikka Kalliomäki <[email protected]>
 * @copyright Copyright (c) 2018 Riikka Kalliomäki
 * @license http://opensource.org/licenses/mit-license.php MIT License
 */
class HttpClient
{
    /** @var bool Whether to omit the body of the response or not */
    private $omitBody;

    /** @var int Size of the chunks in bytes sent to the browser */
    private $chunkSize;

    /** @var ServerApi The api used to actually communicate to the browser */
    private $serverApi;

    /** @var bool Whether to automatically detect content length */
    private $contentLength;

    /**
     * HttpClient constructor.
     */
    public function __construct()
    {
        $this->omitBody = false;
        $this->chunkSize = 8 * 1024;
        $this->serverApi = new ServerApi();
        $this->contentLength = false;
    }

    /**
     * Sets the api used to communicate to the client.
     * @param ServerApi $api The api used to communicate to the client
     */
    public function setServerApi(ServerApi $api): void
    {
        $this->serverApi = $api;
    }

    /**
     * Sets the size of the chunks in bytes that are sent to the browser.
     * @param int $bytes Size of chunks in bytes
     */
    public function setResponseChunkSize(int $bytes): void
    {
        if ($bytes < 1) {
            throw new \InvalidArgumentException('The response chunk size must be at least 1');
        }

        $this->chunkSize = $bytes;
    }

    /**
     * Enables automatic detection of content length and adding the appropriate header.
     * @param bool $enable True to enable, false to disable
     */
    public function enableContentLength(bool $enable = true): void
    {
        $this->contentLength = $enable;
    }

    /**
     * Tells the client to omit the body from the response.
     * @param bool $omit True to omit the body, false to include it
     */
    public function omitBody(bool $omit = true): void
    {
        $this->omitBody = $omit;
    }

    /**
     * Sends the given response to the browser.
     * @param ResponseInterface $response The response to send
     * @return int The number of bytes outputted
     */
    public function send(ResponseInterface $response): int
    {
        $length = 0;

        if ($this->hasResponseBody($response)) {
            $length = $this->detectLength($response);
        }

        if ($length !== null) {
            $response = $response->withHeader('Content-Length', (string) $length);
        }

        if (!$this->serverApi->isHeadersSent()) {
            $this->sendHeaders($response);
        }

        if ($length === null || $length > 0) {
            return $this->sendBody($response, $length);
        }

        return 0;
    }

    /**
     * Tells if we are supposed to output the body of the response.
     * @param ResponseInterface $response The response to send
     * @return bool True if we should send the body, false otherwise
     */
    private function hasResponseBody(ResponseInterface $response): bool
    {
        return !$this->omitBody && !\in_array($response->getStatusCode(), [204, 205, 304], true);
    }

    /**
     * Attempts to detect the length of the response for the content-length header.
     * @param ResponseInterface $response The response used to detect the length
     * @return int|null Length of the response in bytes or null if it cannot be determined
     */
    private function detectLength(ResponseInterface $response): ?int
    {
        if (! $this->contentLength) {
            return null;
        }

        if ($response->hasHeader('Content-Length')) {
            $lengthHeader = $response->getHeader('Content-Length');
            return array_shift($lengthHeader);
        }

        return $response->getBody()->getSize();
    }

    /**
     * Sends the headers for the given response.
     * @param ResponseInterface $response The response to send
     */
    private function sendHeaders(ResponseInterface $response): void
    {
        $this->serverApi->sendHeaderLine(sprintf(
            'HTTP/%s %d %s',
            $response->getProtocolVersion(),
            $response->getStatusCode(),
            $response->getReasonPhrase()
        ));

        foreach ($response->getHeaders() as $name => $values) {
            foreach ($values as $value) {
                $this->serverApi->sendHeaderLine(sprintf('%s: %s', $name, $value));
            }
        }
    }

    /**
     * Sends the body for the given response.
     * @param ResponseInterface $response The response to send
     * @param int|null $length Length of body or null if unknown
     * @return int The number of bytes sent to the browser
     */
    private function sendBody(ResponseInterface $response, ?int $length): int
    {
        $body = $response->getBody();

        if ($body->isSeekable()) {
            $body->rewind();
        }

        $bytes = 0;

        while (!$body->eof()) {
            $read = $length === null ? $this->chunkSize : min($this->chunkSize, $length - $bytes);
            $output = $body->read($read);

            if ($output !== '') {
                $this->serverApi->output($output);
            }

            $bytes += \strlen($output);

            if ($this->serverApi->isConnectionAborted()) {
                break;
            }

            if ($length !== null && $bytes >= $length) {
                break;
            }
        }

        return $bytes;
    }
}


1		<?php
2
3		namespace Simply\Application;
4
5		use Psr\Http\Message\ResponseInterface;
6
7		/**
8		* The http client that facilitates sending responses to the browser client.
9		* @author Riikka Kalliomäki <[email protected]>
10		* @copyright Copyright (c) 2018 Riikka Kalliomäki
11		* @license http://opensource.org/licenses/mit-license.php MIT License
12		*/
13		class HttpClient
14		{
15		/** @var bool Whether to omit the body of the response or not */
16		private $omitBody;
17
18		/** @var int Size of the chunks in bytes sent to the browser */
19		private $chunkSize;
20
21		/** @var ServerApi The api used to actually communicate to the browser */
22		private $serverApi;
23
24		/** @var bool Whether to automatically detect content length */
25		private $contentLength;
26
27		/**
28		* HttpClient constructor.
29		*/
30	18	public function __construct()
31		{
32	18	$this->omitBody = false;
33	18	$this->chunkSize = 8 * 1024;
34	18	$this->serverApi = new ServerApi();
35	18	$this->contentLength = false;
36	18	}
37
38		/**
39		* Sets the api used to communicate to the client.
40		* @param ServerApi $api The api used to communicate to the client
41		*/
42	16	public function setServerApi(ServerApi $api): void
43		{
44	16	$this->serverApi = $api;
45	16	}
46
47		/**
48		* Sets the size of the chunks in bytes that are sent to the browser.
49		* @param int $bytes Size of chunks in bytes
50		*/
51	4	public function setResponseChunkSize(int $bytes): void
52		{
53	4	if ($bytes < 1) {
54	1	throw new \InvalidArgumentException('The response chunk size must be at least 1');
55		}
56
57	3	$this->chunkSize = $bytes;
58	3	}
59
60		/**
61		* Enables automatic detection of content length and adding the appropriate header.
62		* @param bool $enable True to enable, false to disable
63		*/
64	2	public function enableContentLength(bool $enable = true): void
65		{
66	2	$this->contentLength = $enable;
67	2	}
68
69		/**
70		* Tells the client to omit the body from the response.
71		* @param bool $omit True to omit the body, false to include it
72		*/
73	1	public function omitBody(bool $omit = true): void
74		{
75	1	$this->omitBody = $omit;
76	1	}
77
78		/**
79		* Sends the given response to the browser.
80		* @param ResponseInterface $response The response to send
81		* @return int The number of bytes outputted
82		*/
83	17	public function send(ResponseInterface $response): int
84		{
85	17	$length = 0;
86
87	17	if ($this->hasResponseBody($response)) {
88	13	$length = $this->detectLength($response);
89		}
90
91	17	if ($length !== null) {
92	6	$response = $response->withHeader('Content-Length', (string) $length);
93		}
94
95	17	if (!$this->serverApi->isHeadersSent()) {
96	15	$this->sendHeaders($response);
97		}
98
99	17	if ($length === null \|\| $length > 0) {
100	13	return $this->sendBody($response, $length);
101		}
102
103	4	return 0;
104		}
105
106		/**
107		* Tells if we are supposed to output the body of the response.
108		* @param ResponseInterface $response The response to send
109		* @return bool True if we should send the body, false otherwise
110		*/
111	17	private function hasResponseBody(ResponseInterface $response): bool
112		{
113	17	return !$this->omitBody && !\in_array($response->getStatusCode(), [204, 205, 304], true);
114		}
115
116		/**
117		* Attempts to detect the length of the response for the content-length header.
118		* @param ResponseInterface $response The response used to detect the length
119		* @return int\|null Length of the response in bytes or null if it cannot be determined
120		*/
121	13	private function detectLength(ResponseInterface $response): ?int
122		{
123	13	if (! $this->contentLength) {
124	11	return null;
125		}
126
127	2	if ($response->hasHeader('Content-Length')) {
128	1	$lengthHeader = $response->getHeader('Content-Length');
129	1	return array_shift($lengthHeader);
130		}
131
132	1	return $response->getBody()->getSize();
133		}
134
135		/**
136		* Sends the headers for the given response.
137		* @param ResponseInterface $response The response to send
138		*/
139	15	private function sendHeaders(ResponseInterface $response): void
140		{
141	15	$this->serverApi->sendHeaderLine(sprintf(
142	15	'HTTP/%s %d %s',
143	15	$response->getProtocolVersion(),
144	15	$response->getStatusCode(),
145	15	$response->getReasonPhrase()
146		));
147
148	15	foreach ($response->getHeaders() as $name => $values) {
149	15	foreach ($values as $value) {
150	15	$this->serverApi->sendHeaderLine(sprintf('%s: %s', $name, $value));
151		}
152		}
153	15	}
154
155		/**
156		* Sends the body for the given response.
157		* @param ResponseInterface $response The response to send
158		* @param int\|null $length Length of body or null if unknown
159		* @return int The number of bytes sent to the browser
160		*/
161	13	private function sendBody(ResponseInterface $response, ?int $length): int
162		{
163	13	$body = $response->getBody();
164
165	13	if ($body->isSeekable()) {
166	13	$body->rewind();
167		}
168
169	13	$bytes = 0;
170
171	13	while (!$body->eof()) {
172	13	$read = $length === null ? $this->chunkSize : min($this->chunkSize, $length - $bytes);
173	13	$output = $body->read($read);
174
175	13	if ($output !== '') {
176	12	$this->serverApi->output($output);
177		}
178
179	13	$bytes += \strlen($output);
180
181	13	if ($this->serverApi->isConnectionAborted()) {
182	1	break;
183		}
184
185	12	if ($length !== null && $bytes >= $length) {
186	2	break;
187		}
188		}
189
190	13	return $bytes;
191		}
192		}
193

simply-framework / application

HttpClient::sendHeaders() A last analyzed 2018-12-18 13:48 UTC

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

Filter issues like

HttpClient::sendHeaders() A
last analyzed 2018-12-18 13:48 UTC