/// <summary>
/// 获取用户自定义RequestExceptionHandler
/// 如果有自定义RequestExceptionHandler，将不会执行<see cref="RequestExceptionHandler"/>
/// </summary>
protected async Task ExceRequestExceptionHandler(int limitTimes, HttpRequestException e, HttpRequestMessage request)
{
//没有自定义将执行默认
var exHandler = RequestExceptionHandler;
//获取自定义规则
if (request.Properties.TryGetValue(HttpRequestMessageExtensions.Keys.RequestExceptionHandler, out var userDefindHandler))
{
exHandler = (Func <HttpRequestException, Task>)userDefindHandler;
}
StringBuilder builder = new StringBuilder();
builder.Append($"Url：{request.RequestUri} ");
builder.Append($"Method：{request.Method.ToString()} ");
builder.Append(request.Method == HttpMethod.Post ? $"Param：{await request.Content.ReadAsStringAsync()} " : string.Empty);
//没有默认将直接抛出
if (exHandler == null)
{
Logger.Log($"HTTP请求失败{++limitTimes}次。原因：{e.GetFullMessage()} {builder.ToString()}。备注：取消执行RequestExceptionHandler");
throw e;
}
Logger.Log($"HTTP请求失败{++limitTimes}次。原因：{e.GetFullMessage()} {builder.ToString()}");
await exHandler(e).ConfigureAwait(false);
}
