Bitso cryptocurrency exchange client

This project has as objective shows how to connect to the websocket and web service of Bitso cryptocurrency exchange using rxjava as a implementation of observer pattern and manipulates the data in real time.

The first window that you can see it's of the loading, works as a splash screen, while the app start.

After load, the app shows the next window

The UI is composed for 5 important parts.

1. Header, where we can to stop all the connections and close the application

2. Ticks, allows to see the actual upticks and downticks

3. The best orders values (Bids and Asks)

4. The buy and sell of BTC into the application (simulation)

5. Recent trades

Configurations

The X best bids, best asks and recent trades

Consecutive M upticks and N downticks

build it! the project with maven 👍

git clone https://github.com/haroldjcastillo/btc.git
cd btc
mvn clean install && java -jar btc-ui/target/btc-ui-0.0.1.jar

HTTP Configuration

It's posible to configure the HTTP connection, request and socket timeout in the file /btc/config/pooling.json

{
	"connectTimeout": 15000,
	"connectionRequestTimeout": 30000,
	"defaultMaxPerRoute": 20,
	"httpHost": [
		{
			"hostName": "api.bitso.com",
			"port": 808
		}
	],
	"maxTotal": 100,
	"socketTimeout": 15000
}

Additional notes:

• The http request for query the trades it's called each 1 second.
• In each Sell or Buy the ticks counter it's restarted.
• By default the X value it's 10 and M and N it's 2

Checklist

Feature	File name	Method name
Schedule the polling of trades over REST.	ScheduleHttp	start()
Request a book snapshot over REST.	OrderController	loadCurrentOrders()
Listen for diff-orders over websocket.	OrderObserver	onNext(java.lang.String)
Replay diff-orders.	OrderManager	diffOrder(java.lang.String)
Use config option X to request recent trades.	TradeManager	addRecentTrade(com.github.haroldjcastillo.btc.dao.TradePayloadResponse)
Use config option X to limit number of ASKs displayed in UI.	OrderManager	toSortBook(javafx.collections.ObservableList, List)
The loop that causes the trading algorithm to reevaluate.	OrderManager	diffOrder(java.lang.String)