用C#在去中心化交易所OceanOne上掛單買賣任意ERC20 token
在上一課中，我們介紹瞭如何在OceanOne交易比特幣。OceanOne支持交易任何Mixin Network上的token，包括所有的ERC20和EOS token，不需要任何手續和費用，直接掛單即可。下面介紹如何將將一個ERC20 token掛上OceanOne交易。掌握了ERC20的代幣買賣之後，你就可以用同樣的方法買賣任何EOS以及其他Mixin Network上的token
此處我們用一個叫做Benz的ERC20 token爲例。這個token已經被充值進Mixin Network，你可以在區塊鏈瀏覽器看到這個token在Mixin Network內部的總數和交易
預備知識:
先將Ben幣存入你的錢包，然後使用getAssets API讀取它的UUID.
取得該幣的UUID
調用 getAssets API 會返回json數據, 如:
- asset_id 幣的UUID.
- public_key 該幣的當前錢包的地址.
- symbol 幣的名稱. 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();
}
}調用 getAssets API的完整輸出如下:
Make your choose:
aw
Current wallet uuid is 85d5609d-d93b-3c96-96f6-58357c5d99eb
Benz Public Address is: 0x5fD0F147830a186545e6020F58fEc0c4B39065D4 Balance is: 1
EOS Public Address is: eoswithmixin 30399f17622cb2bfc57efd3393144bf9 Balance is: 0
USDT Public Address is: 1JvQ98N5Y8TvDbXr8eA8DHsNZqEuGbzzng Balance is: 1
BTC Public Address is: 1JvQ98N5Y8TvDbXr8eA8DHsNZqEuGbzzng Balance is: 0
XIN Public Address is: 0x5fD0F147830a186545e6020F58fEc0c4B39065D4 Balance is: 0.01限價掛單
- 掛限價買單 低於或者等於市場價的單.
- 掛限價賣單 高於或者是等於市場價的單.
OceanOne支持三種基類價格: USDT, XIN, BTC, 即: Benz/USDT, Benz/XIN, Benz/BTC, 這兒示範Benz/USDT.
限價掛賣單.
新幣掛單後,需要等一分鐘左右，等OceanOne來初始化新幣的相關數據.
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!");
}限價掛買單.
新幣掛單後,需要等一分鐘左右，等OceanOne來初始化新幣的相關數據.
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!");
}讀取幣的價格列表
讀取幣的價格列表，來確認掛單是否成功!
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相關的操作指令
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