关于在 Plaid API 上使用 .net 客户端调用 c#:Exchange_Token 失败并出现异常

Exchange_Token call with .net client on Plaid API failing with exception

我正在尝试调用 Plaid 测试环境以使用 C# 客户端将 Stripe 与 Plaid 集成。

但是我无法交换令牌，而我可以使用 curl 客户端成功完成。代码超级简单。

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public async Task<string> ExchangeToken(string publicToken, string accountId)
{
string bankAccountToken = null;

try
{
var parameters = new Dictionary<string, string>()
{
{"client_id", this.clientId},
{"secret", this.clientSecret},
{"public_token", publicToken},
{"account_id", accountId}
};

using (var client = new HttpClient())
{
var request = new HttpRequestMessage()
{
RequestUri = new Uri(this.BaseAddress,"exchange_token"),
Method = HttpMethod.Post,
Content = new FormUrlEncodedContent(parameters)

};

var requestResult = await client.SendAsync(request);
var stringResponse = requestResult.Content.ReadAsStringAsync();
}

}
catch (Exception ex)
{
Trace.TraceError("PlaidHelper::ExchangeToken() hit error" + ex.Message);
}

return bankAccountToken;
}

调用失败，IO异常表示远程方关闭了连接，内部异常消息是"Authentication failed because the remote party has closed the transport stream."

有人有什么想法吗？我准备把我的头发拉出来..

这是成功的相应 curl 调用。

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$ curl -v https://tartan.plaid.com/exchange_token -d client_id="XXXXX" -d
secret="XXXXXXXXXXXXXXXX" -d public_token="XXXXXXXXXXX" -d account_id="XXXXX"

> POST /exchange_token HTTP/1.1
> Host: tartan.plaid.com
> User-Agent: curl/7.50.3
> Accept: */*
> Content-Length: 263
> Content-Type: application/x-www-form-urlencoded
>
} [263 bytes data]
* upload completely sent off: 263 out of 263 bytes
{ [5 bytes data]
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=utf-8
< Date: Thu, 27 Oct 2016 04:55:53 GMT
< Vary: X-HTTP-Method-Override, Accept-Encoding
< X-Request-Id: 65af9ef1009c46f5b9f484b5c6aee975
< Content-Length: 295
< Connection: keep-alive
<
{ [295 bytes data]
* Curl_http_done: called premature == 0
100 558 100 295 100 263 262 233 0:00:01 0:00:01 --:--:-- 273{
"access_token":"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
"account_id":"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
"stripe_bank_account_token":"btok_XXXXXXXXXXX"
}
* Connection #0 to host tartan.plaid.com left intact