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How does Drupal 8 respond to an HTTP request?
From Drupal 8 Request to HTTP Response. Drupal is in the business of taking an HTTP Request and returning an HTTP Response. Generally speaking, that’s the foundation of the web – you type in a URL into a browser and a request is sent to the server which replies with the appropriate response.
Where to find PSR-7 in Drupal 8?
We can see the footprints of PSR-7 in Drupal 8 starting from the psr\\http-message package in the vendor folder. As the package README says, the repository only holds all interfaces, classes and traits related to PSR-7 and this isn’t an HTTP message implementation of its own.
What are the 7 interfaces of Drupal in PHP?
The document crystallizes HTTP messages into 7 interfaces which a PHP library should implement if they subscribe to the specification, namely MessageInterface, RequestInterface, ResponseInterface, ServerRequestInterface, UriInterface, UploadedFileInterface and StreamInterface. Drupal is an active participant in PHP-FIG.
How to make a JSON request in Drupal?
You can make GET requests as follows: Next, let’s POST some JSON to a remote API: In the client ->post() method above, we pass in a URL string, and an array of request options. In this case, ‘json’, and an array of the properties we’d like to send as JSON.
How to log Drupal : : httpclient request exceptions?
Here is an example of logging Drupal::httpClient request exceptions via watchdog_exception. You can get a full list of Exception types simply by listing the contents of /vendor/guzzlehttp/guzzle/src/Exception. Utilizing this list allows you to provide different behavior based on exception type.
What do the header names in Drupal mean?
HTTP header names are case-insensitive (RFC 2616, section 4.2), so for easy access the array keys are returned in lower case. data: A string containing the response body that was received.