| 1 |
efrain |
1 |
<?php
|
|
|
2 |
|
|
|
3 |
namespace GuzzleHttp;
|
|
|
4 |
|
|
|
5 |
use GuzzleHttp\Promise\PromiseInterface;
|
|
|
6 |
use Psr\Http\Message\RequestInterface;
|
|
|
7 |
|
|
|
8 |
/**
|
|
|
9 |
* Prepares requests that contain a body, adding the Content-Length,
|
|
|
10 |
* Content-Type, and Expect headers.
|
|
|
11 |
*
|
|
|
12 |
* @final
|
|
|
13 |
*/
|
|
|
14 |
class PrepareBodyMiddleware
|
|
|
15 |
{
|
|
|
16 |
/**
|
|
|
17 |
* @var callable(RequestInterface, array): PromiseInterface
|
|
|
18 |
*/
|
|
|
19 |
private $nextHandler;
|
|
|
20 |
|
|
|
21 |
/**
|
|
|
22 |
* @param callable(RequestInterface, array): PromiseInterface $nextHandler Next handler to invoke.
|
|
|
23 |
*/
|
|
|
24 |
public function __construct(callable $nextHandler)
|
|
|
25 |
{
|
|
|
26 |
$this->nextHandler = $nextHandler;
|
|
|
27 |
}
|
|
|
28 |
|
|
|
29 |
public function __invoke(RequestInterface $request, array $options): PromiseInterface
|
|
|
30 |
{
|
|
|
31 |
$fn = $this->nextHandler;
|
|
|
32 |
|
|
|
33 |
// Don't do anything if the request has no body.
|
|
|
34 |
if ($request->getBody()->getSize() === 0) {
|
|
|
35 |
return $fn($request, $options);
|
|
|
36 |
}
|
|
|
37 |
|
|
|
38 |
$modify = [];
|
|
|
39 |
|
|
|
40 |
// Add a default content-type if possible.
|
|
|
41 |
if (!$request->hasHeader('Content-Type')) {
|
|
|
42 |
if ($uri = $request->getBody()->getMetadata('uri')) {
|
|
|
43 |
if (is_string($uri) && $type = Psr7\MimeType::fromFilename($uri)) {
|
|
|
44 |
$modify['set_headers']['Content-Type'] = $type;
|
|
|
45 |
}
|
|
|
46 |
}
|
|
|
47 |
}
|
|
|
48 |
|
|
|
49 |
// Add a default content-length or transfer-encoding header.
|
|
|
50 |
if (!$request->hasHeader('Content-Length')
|
|
|
51 |
&& !$request->hasHeader('Transfer-Encoding')
|
|
|
52 |
) {
|
|
|
53 |
$size = $request->getBody()->getSize();
|
|
|
54 |
if ($size !== null) {
|
|
|
55 |
$modify['set_headers']['Content-Length'] = $size;
|
|
|
56 |
} else {
|
|
|
57 |
$modify['set_headers']['Transfer-Encoding'] = 'chunked';
|
|
|
58 |
}
|
|
|
59 |
}
|
|
|
60 |
|
|
|
61 |
// Add the expect header if needed.
|
|
|
62 |
$this->addExpectHeader($request, $options, $modify);
|
|
|
63 |
|
|
|
64 |
return $fn(Psr7\Utils::modifyRequest($request, $modify), $options);
|
|
|
65 |
}
|
|
|
66 |
|
|
|
67 |
/**
|
|
|
68 |
* Add expect header
|
|
|
69 |
*/
|
|
|
70 |
private function addExpectHeader(RequestInterface $request, array $options, array &$modify): void
|
|
|
71 |
{
|
|
|
72 |
// Determine if the Expect header should be used
|
|
|
73 |
if ($request->hasHeader('Expect')) {
|
|
|
74 |
return;
|
|
|
75 |
}
|
|
|
76 |
|
|
|
77 |
$expect = $options['expect'] ?? null;
|
|
|
78 |
|
|
|
79 |
// Return if disabled or if you're not using HTTP/1.1 or HTTP/2.0
|
|
|
80 |
if ($expect === false || $request->getProtocolVersion() < 1.1) {
|
|
|
81 |
return;
|
|
|
82 |
}
|
|
|
83 |
|
|
|
84 |
// The expect header is unconditionally enabled
|
|
|
85 |
if ($expect === true) {
|
|
|
86 |
$modify['set_headers']['Expect'] = '100-Continue';
|
|
|
87 |
return;
|
|
|
88 |
}
|
|
|
89 |
|
|
|
90 |
// By default, send the expect header when the payload is > 1mb
|
|
|
91 |
if ($expect === null) {
|
|
|
92 |
$expect = 1048576;
|
|
|
93 |
}
|
|
|
94 |
|
|
|
95 |
// Always add if the body cannot be rewound, the size cannot be
|
|
|
96 |
// determined, or the size is greater than the cutoff threshold
|
|
|
97 |
$body = $request->getBody();
|
|
|
98 |
$size = $body->getSize();
|
|
|
99 |
|
|
|
100 |
if ($size === null || $size >= (int) $expect || !$body->isSeekable()) {
|
|
|
101 |
$modify['set_headers']['Expect'] = '100-Continue';
|
|
|
102 |
}
|
|
|
103 |
}
|
|
|
104 |
}
|