@aws-sdk/middleware-header-default

What is @aws-sdk/middleware-header-default?

@aws-sdk/middleware-header-default is a middleware package for the AWS SDK for JavaScript. It allows you to set default headers for your AWS service requests, ensuring that certain headers are always included in your requests without having to manually add them each time.

What are @aws-sdk/middleware-header-default's main functionalities?

Setting Default Headers

This feature allows you to set default headers for all requests made with a specific AWS service client. In this example, a custom header 'x-custom-header' with the value 'my-custom-value' is added to all requests made with the S3 client.

const { HeaderDefaultMiddleware } = require('@aws-sdk/middleware-header-default');
const { S3Client } = require('@aws-sdk/client-s3');

const client = new S3Client({
  region: 'us-west-2',
  middlewareStack: (stack) => {
    stack.add(HeaderDefaultMiddleware({
      'x-custom-header': 'my-custom-value'
    }), {
      step: 'build',
      priority: 'high'
    });
  }
});

// Now all requests made with this client will include the 'x-custom-header' header.

Other packages similar to @aws-sdk/middleware-header-default

axios

Axios is a popular HTTP client for JavaScript that allows you to set default headers for all requests. It is more general-purpose compared to @aws-sdk/middleware-header-default, which is specifically designed for AWS SDK clients. With Axios, you can set default headers globally or for specific instances.

request

Request is another HTTP client for Node.js that allows you to set default headers for all requests. Similar to Axios, it is a general-purpose HTTP client and not specifically tailored for AWS SDK clients. It provides a simple way to set default headers and other request options.

fetch-middleware

Fetch-middleware is a middleware system for the Fetch API that allows you to add custom middleware to your fetch requests, including setting default headers. It is a more flexible and general-purpose solution compared to @aws-sdk/middleware-header-default, which is specifically for AWS SDK clients.

README

@aws-sdk/middleware-header-default

Changelog

1.0.0-rc.7 (2020-11-20)

Bug Fixes

• abort-controller: make AbortSignal WHATWG Spec compliant (#1699) (723ec4d)
• codegen: add aws-iam-traits dependency (#1686) (d6fb1f6)
• fetch-http-handler: omit body for HEAD/GET methods (#1698) (778b305)
• node-http-handler: throw TimeoutError for Node.js timeouts (#1693) (96f61bb)
• change paginators to export paginateOperationName (#1692) (6d02935)

Features

• update clients as of 11/18/2020 (#1700) (8adfed1)
• api-reference: add typedoc plugins for api reference (#1694) (2cb016f)
• ci: add GitHub Action to test codegen (#1684) (41e9359)
• node-http-handler: update timeout code and tests (#1691) (9e58bbb)
• service-error-classification: add 429 response as Throttling (#1690) (9a62c0a)

BREAKING CHANGES

• change paginators to export paginateOperationName to be consistent with verb nouns across AWS