ACME申请证书时可以设置回调URL

internal/utils/http.go

@@ -0,0 +1,53 @@
+package utils
+
+import (
+	"crypto/tls"
+	"io/ioutil"
+	"net/http"
+	"net/http/httputil"
+	"sync"
+	"time"
+)
+
+// HTTP请求客户端管理
+var timeoutClientMap = map[time.Duration]*http.Client{} // timeout => Client
+var timeoutClientLocker = sync.Mutex{}
+
+// DumpResponse 导出响应
+func DumpResponse(resp *http.Response) (header []byte, body []byte, err error) {
+	header, err = httputil.DumpResponse(resp, false)
+	body, err = ioutil.ReadAll(resp.Body)
+	return
+}
+
+// NewHTTPClient 获取一个新的Client
+func NewHTTPClient(timeout time.Duration) *http.Client {
+	return &http.Client{
+		Timeout: timeout,
+		Transport: &http.Transport{
+			MaxIdleConns:          4096,
+			MaxIdleConnsPerHost:   32,
+			MaxConnsPerHost:       32,
+			IdleConnTimeout:       2 * time.Minute,
+			ExpectContinueTimeout: 1 * time.Second,
+			TLSHandshakeTimeout:   0,
+			TLSClientConfig: &tls.Config{
+				InsecureSkipVerify: true,
+			},
+		},
+	}
+}
+
+// SharedHttpClient 获取一个公用的Client
+func SharedHttpClient(timeout time.Duration) *http.Client {
+	timeoutClientLocker.Lock()
+	defer timeoutClientLocker.Unlock()
+
+	client, ok := timeoutClientMap[timeout]
+	if ok {
+		return client
+	}
+	client = NewHTTPClient(timeout)
+	timeoutClientMap[timeout] = client
+	return client
+}