我正在尝试编写一个简单的 POST 请求（returnBalances），但它总是返回错误消息。
无法弄清楚我做错了什么。
解决了这个问题。代码已修复，现在可以正常工作。
这是代码：
public String checkBalancesRequest()
{
uint Nonce = requestCounter++;
String Url = "https://poloniex.com/tradingApi";
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, Url);
Dictionary<string,string> body= new Dictionary<string,string>();
body.Add("command", "returnBalances");
body.Add("nonce",Nonce.ToString());
HttpContent cont = new FormUrlEncodedContent(body);
String stringToSign = cont.ReadAsStringAsync().Result;
String signature = SHA512Sign(stringToSign, secretView);
request.Content = cont;
request.Headers.Add("Key", keyView);
request.Headers.Add("Sign", signature);
dynamic result2 = client.SendAsync(request).Result;
String instrs = "";
if (result2.IsSuccessStatusCode) { instrs = result2.Content.ReadAsStringAsync().Result.ToString(); if (instrs == "{\"error\":\"Invalid command.\"}") { instrs = null; } } else { instrs = null; }
return instrs;
}
public static String SHA512Sign(String message, String key)
{
using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(message)))
{
var signed = new HMACSHA512(Encoding.UTF8.GetBytes(key)).ComputeHash(stream)
.Aggregate(new StringBuilder(), (sb, b) => sb.AppendFormat("{0:x2}", b), (sb) => sb.ToString());
return signed;
}
}