get ip, no proxy #63.

server/internal/utils/ip.go

@@ -3,13 +3,29 @@ package utils
 import (
 	"bytes"
 	"io/ioutil"
+	"net"
 	"net/http"
+	"time"
 )
 
 // dig @resolver1.opendns.com ANY myip.opendns.com +short -4
 
 func GetIP() (string, error) {
-	rsp, err := http.Get("http://checkip.amazonaws.com")
+	tr := &http.Transport{
+		Proxy: nil, // ignore proxy
+		DialContext: (&net.Dialer{
+			Timeout:   10 * time.Second,
+			KeepAlive: 30 * time.Second,
+			DualStack: true,
+		}).DialContext,
+		MaxIdleConns:          30,
+		IdleConnTimeout:       90 * time.Second,
+		TLSHandshakeTimeout:   15 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+
+	client := &http.Client{Transport: tr}
+	rsp, err := client.Get("http://checkip.amazonaws.com")
 	if err != nil {
 		return "", err
 	}