package HttpUtil

import (
	"github.com/valyala/fasthttp"
	"net"
	"net/http"
	"time"
)

var HttpClient *http.Client
var err error

//go get -u github.com/valyala/fasthttp
//参考：https://blog.csdn.net/Guo_Mao_Zhen/article/details/100936779
func FastHttpPost(url string, body string) (string, error) {
	req := fasthttp.AcquireRequest()
	defer fasthttp.ReleaseRequest(req) // 用完需要释放资源
	// 默认是application/x-www-form-urlencoded
	req.Header.SetContentType("application/json")
	req.Header.SetMethod("POST")
	req.SetRequestURI(url)
	req.SetBody([]byte(body))
	resp := fasthttp.AcquireResponse()
	defer fasthttp.ReleaseResponse(resp) // 用完需要释放资源
	err := fasthttp.Do(req, resp)
	if err!=nil{
		return "发生严重错误！",err
	}else{
		return string(resp.Body()), nil
	}
}

func init() {
	HttpClient = &http.Client{}
	HttpClient.Transport = &http.Transport{
		Proxy: http.ProxyFromEnvironment,
		DialContext: (&net.Dialer{
			Timeout:   60 * time.Second,
			KeepAlive: 60 * time.Second, //开启长连接
		}).DialContext,
		DisableCompression:    true,
		MaxIdleConns:          100,              //最大空闲连接数
		MaxIdleConnsPerHost:   100,              //100个连接池大小
		IdleConnTimeout:       90 * time.Second, //连接最大空闲时间
		TLSHandshakeTimeout:   10 * time.Second,
		ExpectContinueTimeout: 1 * time.Second,
	}
}