通过-C-买卖Bitcoin

jiezi

6 年前

上一章介绍了 Exincore，你可以 1 秒完成资产的市价买卖。如果你想限定价格买卖，或者买卖一些 exincore 不支持的资产，你需要 OceanOne。

Ocean.one 是基于 Mixin Network 的去中心化交易所，它性能一流。
你可以在 OceanOne 上交易任何资产，只需要将你的币转给 OceanOne, 将交易信息写在交易的 memo 里，OceanOne 会在市场里列出你的交易需求，
交易成功后，会将目标币转入到你的 MixinNetwork 帐上，它有三大特点与优势：

不需要在 OceanOne 注册
不需要存币到交易所
支持所有 Mixin Network 上能够转账的资产，所有的 ERC20 EOS 代币。

你先需要创建一个机器人, 方法在教程一.

我们需要依赖 MsgPack.Cli and mixin-csharp-sdk , 第四章已经做过介绍, 你应该先安装过它了.

此处演示用 USDT 购买 BTC 或者用 BTC 购买 USDT。交易前，先检查一下钱包地址。
完整的步骤如下:

检查比特币或 USDT 的余额，钱包地址。并记下钱包地址。
从第三方交易所或者你的冷钱包中，将币充到上述钱包地址。
再检查一下币的余额，看到帐与否。(比特币的到帐时间是 5 个区块的高度，约 100 分钟)。

比特币与 USDT 的充值地址是一样的。

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();}
}

如何来查询 Ocean.one 市场的价格信息呢？你要先了解你交易的基础币是什么，如果你想买比特币，卖出 USDT, 那么基础货币就是 USDT; 如果你想买 USDT, 卖出比特币，那么基础货币就是比特币.

public class MarketInfoOcean
{public Omarket data { get; set;}
}
public class Omarket {public string market { get; set;}
  public string timestamp  {get; set;}
  public Side data {get; set;}
}
public class Side {public List<order> asks  { get; set;}
  public List<order> bids  {get; set;}
}
public class order {public string amount { get; set;}
  public string funds {get; set;}
  public string price {get; set;}
  public string side {get; set;}
}

if (cmdo == "1") {string jsonData = FetchOceanMarketPrice(USRCONFIG.XIN_ASSET_ID,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;
}

在第二章里, 基于 Mixin Network 的 C# 比特币开发教程: 机器人接受比特币并立即退还用户, 我们学习过转帐，这儿我们介绍如何告诉 Ocean.one，我们给它转帐的目的是什么，信息全部放在 memo 里.

Side 方向,”B” 或者 “A”, “B” 是购买, “A” 是出售.
AssetUuid 目标虚拟资产的 UUID.
Price 价格，如果操作方向是 ”B”, 价格就是 AssetUUID 的价格; 如果操作方向是 ”B”, 价格就是转给 Ocean.one 币的价格.

private static string GenerateOrderMemo(string Side, string AssetUuid, string Price) {Hashtable temp = new Hashtable();
  temp.Add("S","A");
  temp.Add("A",StringGuid2Bytes(AssetUuid));
  temp.Add("P",Price);
  temp.Add("T","L");
  var serializer3 = MessagePackSerializer.Get<Hashtable>();
  var stream3 = new MemoryStream();
  serializer3.Pack(stream3, temp);
  string memo = Convert.ToBase64String(stream3.ToArray());
  return memo;
}

买入 XIN 的代码如下：

public static string  OCEANONE_BOT   = "aaff5bef-42fb-4c9f-90e0-29f69176b7d4";
public static string  ASSET_ID_BTC   = "c6d0c728-2624-429b-8e0d-d9d19b6592fa";
public static string  ASSET_ID_EOS   = "6cfe566e-4aad-470b-8c9a-2fd35b49c68d";
public static string  ASSET_ID_USDT  = "815b0b1a-2764-3736-8faa-42d694fa620a";

public static string  XIN_ASSET_ID   = "c94ac88f-4671-3976-b60a-09064f1811e8";

if (cmdo == "b1") {Console.WriteLine("Please input the price of XIN/USDT:");
  var pinput = Console.ReadLine();
  Console.WriteLine("Please input the amount of USDT:");
  var ainput = Console.ReadLine();

  string memo = GenerateOrderMemo("A",USRCONFIG.ASSET_ID_USDT,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!");
}

转打算出售的 XIN 给 Ocean.one(OCEANONE_BOT), 将你打算换回来的目标虚拟资产的 UUID 放入 memo.

if (cmdo == "s1") {Console.WriteLine("Please input the price of XIN/USDT:");
  var pinput = Console.ReadLine();
  Console.WriteLine("Please input the amount of XIN:");
  var ainput = Console.ReadLine();
  string memo = GenerateOrderMemo("B",USRCONFIG.XIN_ASSET_ID,pinput);
  Console.WriteLine(memo);
  // Console.WriteLine(Convert.ToBase64String(stream3.ToArray()));
  MixinApi mixinApiNewUser = GetWalletSDK();
  var assets = mixinApiNewUser.ReadAsset(USRCONFIG.XIN_ASSET_ID);
  float balance = float.Parse(assets.balance);
  float amount  = float.Parse(ainput);
  if (( balance >= 0) && (balance >= amount) ) {
    Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.XIN_ASSET_ID,
                            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 XIN!");
}

一个成功的挂单如下：

Please input the price of XIN/USDT:
110
Please input the amount of USDT:
1
hKFBxBDJSsiPRnE5drYKCQZPGBHooVShTKFToUKhUKMxMTA=
1
{"type":"transfer","snapshot_id":"fe04c667-3ad9-4f2b-b205-ba2cef3733ea",
"opponent_id":"aaff5bef-42fb-4c9f-90e0-29f69176b7d4",
"asset_id":"815b0b1a-2764-3736-8faa-42d694fa620a","amount":"-1",
"trace_id":"12cd76aa-e953-4897-bef0-18123a5e69dc",
"memo":"hKFBxBDJSsiPRnE5drYKCQZPGBHooVShTKFToUKhUKMxMTA=",
"created_at":"2019-05-06T06:43:13.488971627Z"}
Order id is 12cd76aa-e953-4897-bef0-18123a5e69dc

Ocean.one 将 trace_id 当做订单，比如上面的例子，12cd76aa-e953-4897-bef0-18123a5e69dc 就是订单号，我们用他来取消订单。

if (cmdo == "c") {Console.WriteLine("Please input the Order id:");
  var oinput = Console.ReadLine();
  Hashtable temp = new Hashtable();
  temp.Add("O",StringGuid2Bytes(oinput));
  var serializer3 = MessagePackSerializer.Get<Hashtable>();
  var stream3 = new MemoryStream();
  serializer3.Pack(stream3, temp);
  string memo = Convert.ToBase64String(stream3.ToArray());
  MixinApi mixinApiNewUser = GetWalletSDK();
  var assets = mixinApiNewUser.ReadAsset(USRCONFIG.CNB_ASSET_ID);
  Console.WriteLine(assets.balance);
  float balance = float.Parse(assets.balance);
  if (balance >= 0) {
    Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.CNB_ASSET_ID,
                            USRCONFIG.OCEANONE_BOT,
                            "0.0000001",
                            GetWalletPinCode(),
                            System.Guid.NewGuid().ToString(),
                            memo);
    Console.WriteLine(reqInfo);
  } else Console.WriteLine("Not enough CNB!");
  }

MixinApi mixinApiNewUser = GetWalletSDK();
var assets = mixinApiNewUser.ReadAssets();

编译执行，即可开始交易了.

[x] dotnet build 编译项目.
[x] dotnet bin/Debug/netcoreapp2.2/bitcoin_wallet.dll 运行它.

本代码执行时的命令列表:

Commands list of this source code:

1: Create Bitcoin Wallet and update PIN
2: Read Bitcoin balance & address
3: Read USDT balance & address
4: Read EOS balance & address
tub: Transfer USDT from Bot to Wallet
tum: Transfer USDT from Wallet to Master
tcb: Transfer CNB from Bot to Wallet
tcm: Transfer CNB from Wallet to Master
txb: Transfer XIN from Bot to Wallet
txm: Transfer XIN from Wallet to Master
5: pay 0.0001 BTC buy USDT
6: pay $1 USDT buy BTC
7: Read Snapshots
8: Fetch market price(USDT)
9: Fetch market price(BTC)
v: Verify Wallet Pin
ab: Read Bot Assets
aw: Read Wallet Assets
o: OceanOne Trading
q: Exit

Make your choose:

Make your choose(eg: q for Exit!):

Make your choose:
o

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

完整代码

通过-C-买卖Bitcoin

方案二: 在去中心化交易所 OceanOne 上挂单买卖 Bitcoin

预备知识:

安装依赖包

充币到 Mixin Network, 并读出它的余额.

取得 Ocean.one 的市场价格信息

交易前，创建一个 Memo!

出售 XIN 的例子

取消挂单

通过读取资产余额，来确认到帐情况

源代码执行

源代码执行