gotenberg/build/docs/content/10-webhook.md

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Webhook

All endpoints accept a form field named webhookURL.

If provided, the API will send the resulting PDF file in a POST request with the application/pdf Content-Type to given URL.

By doing so, your requests to the API will be over before the conversions are actually done!

Examples

cURL

$ curl --request POST \
    --url http://localhost:3000/convert/html \
    --header 'Content-Type: multipart/form-data' \
    --form files=@index.html \
    --form webhookURL='http://myapp.com/webhook/'

Go

import "github.com/thecodingmachine/gotenberg-go-client/v7"

c := &gotenberg.Client{Hostname: "http://localhost:3000"}
index, _ := gotenberg.NewDocumentFromPath("index.html", "/path/to/file")
req := gotenberg.NewHTMLRequest(index)
req.WebhookURL("http://myapp.com/webhook/")
resp, _ := c.Post(req)

PHP

use TheCodingMachine\Gotenberg\Client;
use TheCodingMachine\Gotenberg\DocumentFactory;
use TheCodingMachine\Gotenberg\HTMLRequest;

$client = new Client('http://localhost:3000', new \Http\Adapter\Guzzle6\Client());
$index = DocumentFactory::makeFromPath('index.html', '/path/to/file');
$request = new HTMLRequest($index);
$request->setWebhookURL('http://myapp.com/webhook/');
$resp = $client->post($request);

Timeout

If a webhookURL is provided, you may also send a form field named webhookURLTimeout.

The API will wait the given seconds before it considers the sending of the resulting PDF to be unsucessful.

It takes a float as value (e.g 2.5 for 2.5 seconds).

You may also define this value globally: see the environment variables section.

cURL

$ curl --request POST \
    --url http://localhost:3000/convert/html \
    --header 'Content-Type: multipart/form-data' \
    --form files=@index.html \
    --form webhookURL='http://myapp.com/webhook/' \
    --form webhookURLTimeout=2.5

Go

import "github.com/thecodingmachine/gotenberg-go-client/v7"

c := &gotenberg.Client{Hostname: "http://localhost:3000"}
index, _ := gotenberg.NewDocumentFromPath("index.html", "/path/to/file")
req := gotenberg.NewHTMLRequest(index)
req.WebhookURL("http://myapp.com/webhook/")
req.WebhookURLTimeout(2.5)
resp, _ := c.Post(req)

PHP

use TheCodingMachine\Gotenberg\Client;
use TheCodingMachine\Gotenberg\DocumentFactory;
use TheCodingMachine\Gotenberg\HTMLRequest;

$client = new Client('http://localhost:3000', new \Http\Adapter\Guzzle6\Client());
$index = DocumentFactory::makeFromPath('index.html', '/path/to/file');
$request = new HTMLRequest($index);
$request->setWebhookURL('http://myapp.com/webhook/');
$request->setWebhookURLTimeout(2.5);
$resp = $client->post($request);

Custom HTTP headers

You may send your own HTTP headers to the webhookURL.

For instance, by adding the HTTP header Gotenberg-Webhookurl-Your-Header to your request, the API will send a request to the webhookURL with the HTTP header Your-Header.

Attention: the API uses a canonical format for the HTTP headers: it transforms the first letter and any letter following a hyphen to upper case; the rest are converted to lowercase. For example, the canonical key for accept-encoding is Accept-Encoding.

cURL

$ curl --request POST \
    --url http://localhost:3000/convert/html \
    --header 'Content-Type: multipart/form-data' \
    --header 'Gotenberg-Webhookurl-Your-Header: Foo' \
    --form files=@index.html \
    --form webhookURL='http://myapp.com/webhook/'

Go

import "github.com/thecodingmachine/gotenberg-go-client/v7"

c := &gotenberg.Client{Hostname: "http://localhost:3000"}
index, _ := gotenberg.NewDocumentFromPath("index.html", "/path/to/file")
req := gotenberg.NewHTMLRequest(index)
req.WebhookURL("http://myapp.com/webhook/")
req.AddWebhookURLHTTPHeader("Your-Header", "Foo")
resp, _ := c.Post(req)

PHP

use TheCodingMachine\Gotenberg\Client;
use TheCodingMachine\Gotenberg\DocumentFactory;
use TheCodingMachine\Gotenberg\HTMLRequest;

$client = new Client('http://localhost:3000', new \Http\Adapter\Guzzle6\Client());
$index = DocumentFactory::makeFromPath('index.html', '/path/to/file');
$request = new HTMLRequest($index);
$request->setWebhookURL('http://myapp.com/webhook/');
$request->addWebhookURLHTTPHeader('Your-Header', 'Foo');
$resp = $client->post($request);