@aws-sdk/middleware-content-length

What is @aws-sdk/middleware-content-length?

@aws-sdk/middleware-content-length is a middleware package for the AWS SDK for JavaScript. It automatically calculates and sets the Content-Length header for HTTP requests made using the AWS SDK. This is particularly useful for ensuring that the correct content length is specified for requests, which can help prevent issues with incomplete or malformed requests.

What are @aws-sdk/middleware-content-length's main functionalities?

Automatic Content-Length Calculation

This feature automatically calculates and sets the Content-Length header for HTTP requests. In this example, the middleware is added to the S3 client's middleware stack, and it ensures that the Content-Length header is correctly set for a PutObjectCommand.

const { S3Client, PutObjectCommand } = require('@aws-sdk/client-s3');
const { middlewareContentLength } = require('@aws-sdk/middleware-content-length');

const client = new S3Client({
  region: 'us-west-2',
});

client.middlewareStack.add(middlewareContentLength(), {
  step: 'build',
  priority: 'low',
});

const command = new PutObjectCommand({
  Bucket: 'example-bucket',
  Key: 'example-object',
  Body: 'Hello, world!',
});

client.send(command).then((response) => {
  console.log('Object uploaded successfully:', response);
}).catch((error) => {
  console.error('Error uploading object:', error);
});

Other packages similar to @aws-sdk/middleware-content-length

axios

Axios is a popular HTTP client for JavaScript that automatically sets the Content-Length header for POST and PUT requests when the request body is a string or a Buffer. Unlike @aws-sdk/middleware-content-length, Axios is a general-purpose HTTP client and not specifically designed for AWS SDK.

request

Request is another HTTP client for Node.js that can automatically set the Content-Length header for requests with a body. It is similar to Axios in that it is a general-purpose HTTP client, whereas @aws-sdk/middleware-content-length is specifically designed to work with the AWS SDK.

README

@aws-sdk/middleware-content-length

Changelog

3.295.0 (2023-03-20)

Bug Fixes

• e2e: bump ts-loader version (#4546) (96ca38c)

Features

• client-application-auto-scaling: With this release customers can now tag their Application Auto Scaling registered targets with key-value pairs and manage IAM permissions for all the tagged resources centrally. (ba24447)
• client-neptune: This release makes following few changes. db-cluster-identifier is now a required parameter of create-db-instance. describe-db-cluster will now return PendingModifiedValues and GlobalClusterIdentifier fields in the response. (1824352)
• client-s3outposts: S3 On Outposts added support for endpoint status, and a failed endpoint reason, if any (56a152d)
• client-workdocs: This release adds a new API, SearchResources, which enable users to search through metadata and content of folders, documents, document versions and comments in a WorkDocs site. (e1674aa)
• clients: update client endpoints as of 2023-03-20 (3336bc7)