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2026-07-29 16:01
File Operations

Chunked Transfer Encoding

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Description

Handle Transfer-Encoding: chunked responses where Content-Length is not known in advance.

Test Scenario

// Playwright: Handle chunked transfer
const response = await request.get('/api/v1/files/download?format=stream');

// Note: Content-Length may be absent for chunked encoding
expect(response.headers()['transfer-encoding']).toBe('chunked');

// Collect all chunks
const chunks: string[] = [];
const body = await response.text();

// Body contains all chunks concatenated
const lines = body.trim().split('\n');
expect(lines.length).toBe(10); // 10 chunks

lines.forEach((line, i) => {
  expect(line).toContain(`Chunk ${i + 1}`);
});
Endpoint/api/v1/files/download?format=stream

Testing Tips

  • •Chunked responses have no Content-Length
  • •Each chunk starts with size in hex
  • •Final chunk has size 0
  • •Use streaming APIs to process chunks
// Playwright API Testing - File Operations
import { test, expect } from '@playwright/test';


test('File download', async ({ request }) => {
  const response = await request.get('/api/files/download/report.pdf');


  expect(response.ok()).toBeTruthy();
  expect(response.headers()['content-type']).toContain('application/pdf');


  const buffer = await response.body();
  expect(buffer.length).toBeGreaterThan(0);
});

Challenge ID: chunked-transfer

2 frameworks available

API Playground

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Endpoint: /api/v1/files/download?format=stream

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