What Is Mongoose Embedded Web Server?


Angela Bailey

Mongoose Embedded Web Server is a powerful tool that allows developers to easily incorporate web server functionalities into their applications. Whether you are building an IoT device, a mobile application, or a desktop software, Mongoose provides a lightweight and efficient solution for serving web content.

What is Mongoose Embedded Web Server?

Mongoose Embedded Web Server, often referred to as simply Mongoose, is an open-source software library that enables developers to embed web server capabilities directly into their applications. It is written in C language and designed to be lightweight, efficient, and easy to use.

Why Use Mongoose Embedded Web Server?

There are several reasons why you might choose to use Mongoose for your application’s web server needs. Firstly, it offers a compact footprint, making it suitable for resource-constrained environments such as embedded systems or IoT devices. It requires minimal memory and CPU resources while still providing robust web server capabilities.

Secondly, Mongoose is highly extensible and customizable. It supports various protocols such as HTTP, WebSocket, MQTT, CoAP, and more. This flexibility allows you to tailor the web server functionality specifically for your application’s requirements.

Thirdly, Mongoose provides an intuitive API that simplifies the process of integrating the web server into your codebase. With just a few lines of code, you can have a fully functional web server up and running.

Key Features of Mongoose Embedded Web Server

Mongoose comes packed with numerous features that make it an excellent choice for embedding web servers:

  • Lightweight: With its small footprint and low resource usage, Mongoose is ideal for constrained devices.
  • Easy Integration: The intuitive API allows for quick integration into existing applications without much hassle.
  • Supports Multiple Protocols: Mongoose supports various protocols, including HTTP, WebSocket, MQTT, and CoAP.
  • SSL/TLS Support: It provides secure connections through SSL/TLS encryption.
  • Dynamic Content Generation: Mongoose allows for dynamic content generation using server-side scripting languages like PHP or JavaScript.
  • Authentication and Access Control: It offers built-in support for authentication and access control mechanisms to protect your application’s resources.

Getting Started with Mongoose

To get started with Mongoose Embedded Web Server, follow these steps:

  1. Download and Install: Visit the official Mongoose website and download the latest version of the library. Installation instructions specific to your platform can be found in the documentation.
  2. Create a New Project: Start by creating a new project or open an existing one where you want to integrate the web server functionality.
  3. Add Mongoose Library: Add the Mongoose library to your project by linking it with your codebase.

    Consult the documentation for detailed instructions on how to link the library correctly.

  4. Create Server Configuration: Define server configuration parameters such as port number, protocol support, SSL/TLS settings, etc., according to your application’s requirements.
  5. Create Request Handlers: Implement request handlers for handling incoming requests. This includes defining routes, processing request data, and generating appropriate responses.
  6. Start the Server: Finally, start the web server by calling the appropriate function provided by the Mongoose library. This will initialize the server and begin listening for incoming requests.

Example Code

Here’s a simple example that demonstrates how to create a basic HTTP server using Mongoose:

#include "mongoose.h"

static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
  // Event handler implementation
  // ..

int main(void) {
  struct mg_mgr mgr;
  struct mg_connection *nc;

  mg_mgr_init(&mgr, NULL);
  nc = mg_bind(&mgr, "8080", ev_handler);
  for (;;) {
    mg_mgr_poll(&mgr, 1000);

  return 0;

This code initializes the Mongoose manager, binds it to port “8080”, and sets the event handler function. The `mg_set_protocol_http_websocket` function enables HTTP protocol support. Finally, the `mg_mgr_poll` function continuously polls for incoming requests.


Mongoose Embedded Web Server is a versatile and lightweight solution for integrating web server capabilities into your applications. With its extensive feature set and easy-to-use API, you can quickly develop robust web servers that cater to your specific needs.

Whether you are building an IoT device or a desktop application, Mongoose provides the necessary tools to simplify the process of serving web content. Give it a try and experience the power of embedded web servers with Mongoose!

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