Making HTTP requests

The Cro HTTP client makes it easy to make simple requests, while having a powerful range of features for more complex situations.

The simplest GET request can be written as:

# Import the client class.
use Cro::HTTP::Client;

# Make the request
my $resp = await Cro::HTTP::Client.get('https://www.perl6.org/');

Different methods represent different HTTP methods, such as get, post, put and delete. Every such method returns a Promise that will be kept when the response is returned. This Promise is kept with a Cro::HTTP::Response instance. The body of the request is also provided using a Promise, since it may arrive later than the initial response header.

my $body = await $resp.body;

To keep the defaults for every request, one can create an instance of the client and specify them at construction time. For example, the user agent header could be set on every request as follows:

my $client = Cro::HTTP::Client.new(
    headers => [
        User-agent => 'Cro'
    ]);
my $resp = await $client.get('https://www.perl6.org/');

Making an instance has the advantage that connections will be re-used between requests, or in the case of HTTP/2.0 they will be multiplexed onto a single connection.

For more details, see the complete Cro::HTTP::Client documentation.