a .net core tcp socket implemented http client 一个用原生TCP实现的 http client
##Usage
var request = new HttpRequest();
request.Uri = new Uri("https://www.github.com");
//sync style
var html = asyncHttpClient.GetString(request);
Console.WriteLine(html);
//async style
var html = await asyncHttpClient.GetStringAsync(request);
Console.WriteLine(html);
//callback style
asyncHttpClient.Execute(request,(res)=>{
res.BodyStream.ReadAsString((html) =>
{
Console.WriteLine(html);
});
});