Fix headers parsing of HttpClient

[kyryl-bogach]

Reproducing the error:

By calling the sendSms method of this library like this:

sendSms(SendSmsBag::withMessage($phone, $message));

There is a change to have this exception:

When the header string contains a space in the end (notice the space in the end after HTTP/2 200).

---

Fixing the error:

This issue comes from HttpClient::execute that does not properly trim the header. What it is doing is only removing empty lines (with array_filter(explode("\n", $headerString), 'trim');). Now it will keep removing the empty lines but also it will trim the lines so that this exception is not thrown.

$headerString = "HTTP/2 200 \r
date: Tue, 22 Mar 2022 12:01:26 GMT\r
server: Apache\r
cache-control: no-cache, private\r
x-correlation-id: hc6f314f-e3d2-2b25-911e-e912e62aae1c\r
x-request-id: 14c12fa5-b6a8-2a83-a875-8c4c3841e4ed\r
cache-control: max-age=0\r
expires: Tue, 22 Mar 2022 12:01:26 GMT\r
content-type: application/json; charset=utf-8\r

// notice these new lines (which are taken care of by the array_filter)

";

.........

Expected result:
[
     "HTTP/2 200",
     "date: Tue, 22 Mar 2022 12:01:26 GMT",
     "server: Apache",
     "cache-control: no-cache, private",
     "x-correlation-id: hc6f314f-e3d2-2b25-911e-e912e62aae1c",
     "x-request-id: 14c12fa5-b6a8-2a83-a875-8c4c3841e4ed",
     "cache-control: max-age=0",
     "expires: Tue, 22 Mar 2022 12:01:26 GMT",
     "content-type: application/json; charset=utf-8",
]

Actual result:
[
     "HTTP/2 200 ",
     "date: Tue, 22 Mar 2022 12:01:26 GMT",
     "server: Apache",
     "cache-control: no-cache, private",
     "x-correlation-id: hc6f314f-e3d2-2b25-911e-e912e62aae1c",
     "x-request-id: 14c12fa5-b6a8-2a83-a875-8c4c3841e4ed",
     "cache-control: max-age=0",
     "expires: Tue, 22 Mar 2022 12:01:26 GMT",
     "content-type: application/json; charset=utf-8",
   ]

---

Where the error comes from:

Why do we have this error now but not before?

Because guzzle/psr7 updated a regex that was checking valid headers: https://github.com/guzzle/psr7/blob/master/src/MessageTrait.php

This has been released in 2.1.2 https://github.com/guzzle/psr7/pull/492

[michalkortas]

Hi, I have the same bug.

[kyryl-bogach]

Thank you @maciejlew! 🙂