Description:
------------
PHP sends 4 extra bytes with a POST request when using stream_context_create and 
file_get_contents.  The extra bytes are CR LF CR LF.  The RFC does not state that 
CR LF CR LF should be after message-body.

This appears to be the same as Bug #43222: stream_context_create() bugs
Was there a test created to detect this problem?

Test script:
---------------
$url = 'http://localhost:8001/post';
$post = 'Sample';  // 6 bytes

$options = array(
    'http' => array(
        'method' => 'POST',
        'protocol_version' => '1.1',
	'content' => $post,
    )
);

$urlParts = parse_url($url);

$headers = array();
$headers[] = 'Content-Type: application/x-www-form-urlencoded; charset=utf-8';
$headers[] = 'Content-Length: ' . strlen($post);
$headers[] = 'Connection: close';  // Force servers to close the connection
$headers[] = 'Host: ' . $urlParts['host'];  // Required for HTTP 1.1
$options['http']['header'] = $headers;
$context = stream_context_create($options);
file_get_contents($url, false, $context);


Expected result:
----------------
The hexdump of the TCP traffic should appear like thus:


00000000  50 4f 53 54 20 2f 70 6f  73 74 20 48 54 54 50 2f  |POST /post HTTP/|
00000010  31 2e 31 0d 0a 43 6f 6e  74 65 6e 74 2d 54 79 70  |1.1..Content-Typ|
00000020  65 3a 20 61 70 70 6c 69  63 61 74 69 6f 6e 2f 78  |e: application/x|
00000030  2d 77 77 77 2d 66 6f 72  6d 2d 75 72 6c 65 6e 63  |-www-form-urlenc|
00000040  6f 64 65 64 3b 20 63 68  61 72 73 65 74 3d 75 74  |oded; charset=ut|
00000050  66 2d 38 0d 0a 43 6f 6e  74 65 6e 74 2d 4c 65 6e  |f-8..Content-Len|
00000060  67 74 68 3a 20 36 0d 0a  43 6f 6e 6e 65 63 74 69  |gth: 6..Connecti|
00000070  6f 6e 3a 20 63 6c 6f 73  65 0d 0a 48 6f 73 74 3a  |on: close..Host:|
00000080  20 6c 6f 63 61 6c 68 6f  73 74 0d 0a 0d 0a 53 61  | localhost....Sa|
00000090  6d 70 6c 65                                       |mple|
00000094


Actual result:
--------------
This is what I actually capture as TCP traffic

00000000  50 4f 53 54 20 2f 70 6f  73 74 20 48 54 54 50 2f  |POST /post HTTP/|
00000010  31 2e 31 0d 0a 43 6f 6e  74 65 6e 74 2d 54 79 70  |1.1..Content-Typ|
00000020  65 3a 20 61 70 70 6c 69  63 61 74 69 6f 6e 2f 78  |e: application/x|
00000030  2d 77 77 77 2d 66 6f 72  6d 2d 75 72 6c 65 6e 63  |-www-form-urlenc|
00000040  6f 64 65 64 3b 20 63 68  61 72 73 65 74 3d 75 74  |oded; charset=ut|
00000050  66 2d 38 0d 0a 43 6f 6e  74 65 6e 74 2d 4c 65 6e  |f-8..Content-Len|
00000060  67 74 68 3a 20 36 0d 0a  43 6f 6e 6e 65 63 74 69  |gth: 6..Connecti|
00000070  6f 6e 3a 20 63 6c 6f 73  65 0d 0a 48 6f 73 74 3a  |on: close..Host:|
00000080  20 6c 6f 63 61 6c 68 6f  73 74 0d 0a 0d 0a 53 61  | localhost....Sa|
00000090  6d 70 6c 65 0d 0a 0d 0a                           |mple....|
00000098