Chapter 16: Response Object Deep Dive in C++

JSON, text, HTML, raw bytes, status codes. In this chapter, you will learn response object deep dive in depth with C++ code examples, explanations, and best practices.

Overview

This chapter covers response object deep dive for Kungfu.js developers using C++. We will start with the basics, move through practical examples, and end with advanced techniques and common pitfalls.

Why This Matters

Understanding response object deep dive is essential because it is a core part of building web applications. Every real-world app needs to handle json, text, html, raw bytes, status codes. Skipping this chapter would leave a gap in your knowledge that would cause problems later.

Code Example

Here is how to handle requests and responses in C++:

// Request and response handling
app.get('/example', (req) => {
    // req.method = "GET"
    // req.path = "/example"
    // req.query = { q: "search", limit: "10" }
    // req.params = { id: "42" }
    // req.headers = { host: "...", authorization: "..." }
    // req.body = ""
    
    return {
        status: 200,
        headers: { 'content-type': 'application/json' },
        body: JSON.stringify({ ok: true })
    };
});

Common Mistakes

Not reading the documentation: Always check the API reference when something does not work as expected.
Skipping security: Never disable the default middleware unless you have a very good reason. Security is not optional.
Not testing: Write tests for your handlers. Kungfu.js makes this easy with the built-in test utilities.

Summary

In this chapter, you learned about response object deep dive in C++. You saw code examples, understood how things work under the hood, and learned about common mistakes to avoid.

What is Next?

In chapter 17, we will cover JSON Handling: Parse, validate, and send JSON responses.

Previous: Request Object Deep Dive Next: JSON Handling