# SSE-Demo

**Repository Path**: hemashuo/SSE-Demo

## Basic Information

- **Project Name**: SSE-Demo
- **Description**: 此存储库包含一个技术展示，演示了如何在Delphi中实现和使用服务器发送事件（SSE）。它重点展示了单个WebBroker服务器如何通过SSE同时向Web浏览器和本地应用程序推送实时数据。

包含两个主要项目：

SSEServer：一个控制台WebBroker服务器，负责托管Web应用程序并广播SSE事件。
FMXSSEClient：一个原生FireMonkey桌面应用程序，使用相同的SSE流。
- **Primary Language**: Delphi
- **License**: Not specified
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-04-05
- **Last Updated**: 2026-04-05

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# RAD Studio SSE Demo (Server-Sent Events)

![SSE screenshot](.github/images/SSE.gif)

This repository contains a technical showcase demonstrating how to implement and consume **Server-Sent Events (SSE)** in Delphi. It highlights how a single WebBroker server can simultaneously push real-time data to both Web browsers and native applications via SSE.

The demo consists of two main projects:
1. **SSEServer**: A console WebBroker server that hosts the web application and broadcasts SSE events.
2. **FMXSSEClient**: A native FireMonkey desktop application that consumes the same SSE stream.

## Features Demonstrated

- **Real-time Server-Sent Events (SSE)** using Delphi's `Web.WebBroker` and `TWebResponseStream`.
- **Background Job Progress**: Simulates a long-running process on the server pushing percent progress to the clients.
- **Throttling & Cadence**: Setting intervals via URL parameters (`hbMs` and `dashMs`) so clients control their update frequency.
- **Cross-Platform Clients**: Shows the same SSE technology integrated into a Web page via `EventSource` and natively into Delphi using `THTTPEventSource`.

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## How to Run

### 1. Start the Server

1. Open `SSEDemo.groupproj` in Delphi.
2. Compile and Run the **SSEServer** project.
3. The server runs as a console application. By default, it will start HTTP services on port `8080`.
4. In the server console window, type `start` to run the service.

### 2. Run the Clients

You have two ways to see the demo working (and you can run multiple at the same time!):

**Option A: The Web Version**
1. With the server running, open a web browser.
2. Navigate to `http://localhost:8080`.
3. You will see a web dashboard demonstrating the live Dashboard KPIs, background job controls, and an event log.

**Option B: The FireMonkey (FMX) Client**
1. In Delphi, compile and run the **FMXSSEClient** project.
2. Once the app opens, click **Connect**.
3. It will connect to the same `localhost:8080` server and display the identical live metrics natively.

### Pushing Data
* Try opening a web client and the FMX client side-by-side.
* Click the "Start Job" button on either client. You will see both clients update their progress bars in real-time as the server broadcasts the job's progress.