用C#在去中心化交易所OceanOne上挂单买卖任意ERC20 token
在上一课中，我们介绍了如何在OceanOne交易比特币。OceanOne支持交易任何Mixin Network上的token，包括所有的ERC20和EOS token，不需要任何手续和费用，直接挂单即可。下面介绍如何将将一个ERC20 token挂上OceanOne交易。掌握了ERC20的代币买卖之后，你就可以用同样的方法买卖任何EOS以及其他Mixin Network上的token
此处我们用一个叫做Benz的ERC20 token为例。这个token已经被充值进Mixin Network，你可以在区块链浏览器看到这个token在Mixin Network内部的总数和交易
预备知识:
先将Ben币存入你的钱包，然后使用getAssets API读取它的UUID.
取得该币的UUID
调用 getAssets API 会返回json数据, 如:
- asset_id 币的UUID.
- public_key 该币的当前钱包的地址.
- symbol 币的名称. 如: Benz.
if (cmd == "aw" ) { // Console.WriteLine(mixinApi.VerifyPIN(USRCONFIG.PinCode.ToString()).ToString()); MixinApi mixinApiNewUser = GetWalletSDK(); var assets = mixinApiNewUser.ReadAssets(); string wuuid = GetWalletUUID(); Console.WriteLine("Current wallet uuid is " + wuuid); foreach (Asset asset in assets) { if (asset.symbol == "EOS") { Console.WriteLine(asset.symbol + " Public Address is: " + asset.account_name + " " + asset.account_tag + " Balance is: " + asset.balance); } else Console.WriteLine(asset.symbol + " Public Address is: " + asset.public_key + " Balance is: " + asset.balance); Console.WriteLine(); }}调用 getAssets API的完整输出如下:
Make your choose:awCurrent wallet uuid is 85d5609d-d93b-3c96-96f6-58357c5d99ebBenz Public Address is: 0x5fD0F147830a186545e6020F58fEc0c4B39065D4 Balance is: 1EOS Public Address is: eoswithmixin 30399f17622cb2bfc57efd3393144bf9 Balance is: 0USDT Public Address is: 1JvQ98N5Y8TvDbXr8eA8DHsNZqEuGbzzng Balance is: 1BTC Public Address is: 1JvQ98N5Y8TvDbXr8eA8DHsNZqEuGbzzng Balance is: 0XIN Public Address is: 0x5fD0F147830a186545e6020F58fEc0c4B39065D4 Balance is: 0.01限价挂单
- 挂限价买单 低于或者等于市场价的单.
- 挂限价卖单 高于或者是等于市场价的单.
OceanOne支持三种基类价格: USDT, XIN, BTC, 即: Benz/USDT, Benz/XIN, Benz/BTC, 这儿示范Benz/USDT.
限价挂卖单.
新币挂单后,需要等一分钟左右，等OceanOne来初始化新币的相关数据.
public static string ERC20_BENZ = "2b9c216c-ef60-398d-a42a-eba1b298581d";if ( cmdo == "s2") { Console.WriteLine("Please input the price of ERC20/USDT: "); var pinput = Console.ReadLine(); Console.WriteLine("Please input the amount of ERC20: "); var ainput = Console.ReadLine(); string memo = GenerateOrderMemo("A",USRCONFIG.ASSET_ID_USDT,pinput); Console.WriteLine(memo); // Console.WriteLine(Convert.ToBase64String(stream3.ToArray())); MixinApi mixinApiNewUser = GetWalletSDK(); var assets = mixinApiNewUser.ReadAsset(USRCONFIG.ERC20_BENZ); float balance = float.Parse(assets.balance); float amount = float.Parse(ainput); if ( ( balance >= 0 ) && ( balance >= amount ) ) { Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.ERC20_BENZ, USRCONFIG.OCEANONE_BOT, ainput, GetWalletPinCode(), System.Guid.NewGuid().ToString(), memo); Console.WriteLine(reqInfo); Console.WriteLine("Order id is " + reqInfo.trace_id); } else Console.WriteLine("Not enough ERC20_BENZ!");}限价挂买单.
新币挂单后,需要等一分钟左右，等OceanOne来初始化新币的相关数据.
if ( cmdo == "b2") { Console.WriteLine("Please input the price of ERC20_BENZ/USDT: "); var pinput = Console.ReadLine(); Console.WriteLine("Please input the amount of USDT: "); var ainput = Console.ReadLine(); string memo = GenerateOrderMemo("B",USRCONFIG.ERC20_BENZ,pinput); Console.WriteLine(memo); MixinApi mixinApiNewUser = GetWalletSDK(); var assets = mixinApiNewUser.ReadAsset(USRCONFIG.ASSET_ID_USDT); Console.WriteLine(assets.balance); float balance = float.Parse(assets.balance); float amount = float.Parse(ainput); if ( ( balance >= 1.0 ) && ( balance >= amount ) ) { Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.ASSET_ID_USDT, USRCONFIG.OCEANONE_BOT, ainput, GetWalletPinCode(), System.Guid.NewGuid().ToString(), memo); Console.WriteLine(reqInfo); Console.WriteLine("Order id is " + reqInfo.trace_id); } else Console.WriteLine("Not enough USDT!");}读取币的价格列表
读取币的价格列表，来确认挂单是否成功!
if (cmdo == "2") { string jsonData = FetchOceanMarketPrice(USRCONFIG.ERC20_BENZ,USRCONFIG.ASSET_ID_USDT); // string jsonData = FetchMarketPrice("c6d0c728-2624-429b-8e0d-d9d19b6592fa"); var marketObj = JsonConvert.DeserializeObject<MarketInfoOcean>(jsonData); Console.WriteLine("--Price--Amount---Funds---Side----"); foreach (order value in marketObj.data.data.asks) { Console.WriteLine(value.price + " " + value.amount + " " + value.funds + " " + value.side); } foreach (order value in marketObj.data.data.bids) { Console.WriteLine(value.price + " " + value.amount + " " + value.funds + " " + value.side); }}public static string FetchOceanMarketPrice(string asset_id, string base_asset){ return FetchOceanMarketPriceAsync(asset_id,base_asset).Result;}public static async Task<string> FetchOceanMarketPriceAsync(string asset_id, string base_asset){ HttpClient client = new HttpClient(); string baseUrl = "https://events.ocean.one/markets/" + asset_id + "-" + base_asset + "/book"; try { HttpResponseMessage response = await client.GetAsync(baseUrl); response.EnsureSuccessStatusCode(); string responseBody = await response.Content.ReadAsStringAsync(); // Above three lines can be replaced with new helper method below // string responseBody = await client.GetStringAsync(uri); Console.WriteLine(responseBody); return responseBody; } catch(HttpRequestException e) { Console.WriteLine("\nException Caught!"); Console.WriteLine("Message :{0} ",e.Message); } return null;}ERC20相关的操作指令
Commands list of this source code:
- teb:Transfer ERC20 from Bot to Wallet
- tem:Transfer ERC20 from Wallet to Master
- o: Ocean.One Exchange
Make your choose:
- 1: Fetch XIN/USDT orders
- s1: Sell XIN/USDT
- b1: Buy XIN/USDT
- 2: Fetch ERC20(Benz)/USDT orders
- s2: Sell Benz/USDT
- b2: Buy Benz/USDT
- c: Cancel Order
- q: Exit
完整的代码