How to use the --haproxy-protocol option in Guzzle library?

Václav Makeš — Sun, 24 Sep 2023 14:25:33 +0000

I needed the --haproxy-protocol option from the curl library to call the request. Within curl this option works great. But how to achieve the same in the PHP library Guzzle?

First, we needed to verify that the option exists in the library itself. As of PHP version 7.3, there is a constant CURLOPT_HAPROXYPROTOCOL that does the same thing. The call then looks like this:

$ch = curl_init($url); 
curl_setopt($ch, CURLOPT_HAPROXYPROTOCOL, true);
// ...

The second question was how to use this option within the Guzzle library. While documentation does not describe the option, it is possible to set the curl configuration. The library deliberately does not show this setting because it breaks the abstraction that Guzzle provides.

The whole call then looks like this

$client->request('GET', $url, [
    'curl' => [CURLOPT_HAPROXYPROTOCOL => true],
]);

Other options can be added to the curl field, as described in the PHP documentation for the curl_setopt function.

Sending messages using Slack Webhooks

Václav Makeš — Wed, 29 Dec 2021 14:55:27 +0000

Slack documentation has part about sending messages with webhooks.

It works great, but there is missing information about details. We can send custom message with emoji, username and selected channel.

{
  "text": "My message.",
  "channel": "notifications_channel",
  "username": "My custom robot name",
  "icon_emoji": "rocket"
}

When you send it from script or CI server you can use curl in format:

curl -X POST \
  -H 'Content-type: application/json' \
  --data "{'text':'My message.', 'channel':'notifications_channel', 'username':'My custom robot name', 'icon_emoji':'rocket'}" \
  $SLACK_WEBHOOK_URL

How message in Slack looks? First message is ours, second is from Trello application for comparation.

Forem: Václav Makeš

How to use the --haproxy-protocol option in Guzzle library?

Sending messages using Slack Webhooks