@aws-sdk/middleware-content-length

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);
});