# 2.2. Topics

<table data-header-hidden><thead><tr><th width="180.272705078125"></th><th></th></tr></thead><tbody><tr><td>Stock Info</td><td>plaintext/quotes/stock/SI/<strong>{symbol}</strong></td></tr><tr><td>Top Price</td><td>plaintext/quotes/stock/TP/<strong>{symbol}</strong></td></tr><tr><td>Session</td><td>plaintext/quotes/session/<strong>{exchangeCode}</strong></td></tr><tr><td>Market Index</td><td>plaintext/quotes/index/MI/<strong>{marketID}</strong></td></tr><tr><td>OHLC</td><td>plaintext/quotes/<strong>{type}</strong>/OHLC/<strong>{resolution}</strong>/<strong>{symbol}</strong></td></tr><tr><td>Tick</td><td>plaintext/quotes/stock/tick/<strong>{symbol}</strong></td></tr></tbody></table>

| Field        | Type   | Description                                                                                                                |
| ------------ | ------ | -------------------------------------------------------------------------------------------------------------------------- |
| symbol       | String | Mã chứng khoán                                                                                                             |
| exchangeCode | String | <p>Mã sàn:</p><ul><li>HSX: Sàn HCM</li><li>HNX: Sàn HN</li><li>UPCOM: Sàn Upcom</li></ul>                                  |
| marketID     | String | <p>Mã Index:</p><ul><li>VN30</li><li>VNALLSHARE</li><li>VNINDEX</li><li>HNX30</li></ul>                                    |
| type         | String | <p>Loại OHLC:</p><ul><li>stock: mã CK cơ sở</li><li>index: chỉ số thị trường</li><li>derivative: mã CK phái sinh</li></ul> |
| resolution   | String | <p>Resolution của OHLC:</p><ul><li>1: Phút</li><li>1H: Giờ</li><li>1D: Ngày</li><li>W: Tuần</li></ul>                      |

Cấu trúc message được nhận qua WebSocket. Định dạng JSON

| Type             | Payload     | Mô tả                         | Topic MQTT   |
| ---------------- | ----------- | ----------------------------- | ------------ |
| MARKET\_INDEX    | MarketIndex | Chứa thông tin chỉ số         | Market Index |
| STOCK\_INFO      | StockInfo   | Chứa thông tin giá của mã     | Stock Info   |
| TOP\_PRICE       | TopPrice    | Chứa thông tin Bid/Offer      | Top Price    |
| TRADING\_SESSION | Session     | Chứa thông tin thay đổi phiên | Session      |
| OHLC             | OHLC        | Thông tin nến                 | OHLC         |
| TICK             | Tick        | Thông tin khớp lệnh           | Tick         |

Chi tiết message xem tại file **1. DNSE MDDS System.xlsx** đính kèm.

{% file src="/files/IasqypJy1lkPTDklnGBo" %}

(MQTT X client dùng để test kết nối: <https://www.emqx.com/en/try?product=MQTTX>)

* Examples: <https://github.com/emqx/MQTT-Client-Examples>
* DNSE Python Example: theo file **2. json\_sub\_wss\_v5.py** đính kèm.

{% file src="/files/epiFh1iVTQmc4pwkZc7e" %}

Chi tiết message xem tại file **1. DNSE MDDS System.xlsx** đính kèm.

{% file src="/files/aSvlcJ68hT6CrxjXI2mI" %}

(MQTT X client dùng để test kết nối: <https://www.emqx.com/en/try?product=MQTTX>)

* Examples: <https://github.com/emqx/MQTT-Client-Examples>
* DNSE Python Example: theo file **2. json\_sub\_wss\_v5.py** đính kèm.

{% file src="/files/a3FT47uz3R8MCtYyN8YQ" %}


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