小编Sho*_*ore的帖子

这就是我正在尝试的：

public static async Task<HttpResponseMessage> post(string specificUrl, string token, StringContent inputData) // specificUrl like "user/" at the end "/"
{
    var policy = Policy
        .Handle<Exception>()
        .OrResult<HttpResponseMessage>(res => !res.IsSuccessStatusCode)
        .RetryAsync(3);

    string fullUrl = baseUrl + specificUrl;
    using (var requestMessage = new HttpRequestMessage(HttpMethod.Post, fullUrl))
    {
        requestMessage.Content = inputData;
        requestMessage.Headers.Add("access_token", token);
        //HttpResponseMessage res = await client.SendAsync(requestMessage).ConfigureAwait(false);
        HttpResponseMessage res = await policy.ExecuteAsync(() => client.SendAsync(requestMessage)).ConfigureAwait(false);
        return res;
    }
}

一旦代码到达 waitAndRetryPolicy 并等待所需的时间，我就会收到以下错误：

System.InvalidOperationException：'请求消息已发送。无法多次发送相同的请求消息。