feature proxy rewrite.

global/config.go

@@ -152,6 +152,7 @@ type JsonConfig struct {
 	} `json:"_rate_limit"`
 	IgnoreInvalidCQCode bool                          `json:"ignore_invalid_cqcode"`
 	ForceFragmented     bool                          `json:"force_fragmented"`
+	ProxyRewrite        string                        `json:"proxy_rewrite"`
 	HeartbeatInterval   time.Duration                 `json:"heartbeat_interval"`
 	HttpConfig          *GoCQHttpConfig               `json:"http_config"`
 	WSConfig            *GoCQWebsocketConfig          `json:"ws_config"`

global/net.go

@@ -5,7 +5,9 @@ import (
 	"compress/gzip"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/http"
+	"net/url"
 	"strings"
 	"time"
 
@@ -14,8 +16,28 @@ import (
 
 var client = &http.Client{
 	Timeout: time.Second * 15,
+	Transport: &http.Transport{
+		Proxy: func(request *http.Request) (u *url.URL, e error) {
+			if Proxy == "" {
+				return http.ProxyFromEnvironment(request)
+			}
+			return url.Parse(Proxy)
+		},
+		DialContext: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+			DualStack: true,
+		}).DialContext,
+		ForceAttemptHTTP2:     true,
+		MaxIdleConns:          100,
+		IdleConnTimeout:       90 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	},
 }
 
+var Proxy string
+
 func GetBytes(url string) ([]byte, error) {
 	req, err := http.NewRequest("GET", url, nil)
 	if err != nil {

main.go

@@ -319,6 +319,7 @@ func main() {
 	if conf.WebUi.Host == "" {
 		conf.WebUi.Host = "127.0.0.1"
 	}
+	global.Proxy = conf.ProxyRewrite
 	b := server.WebServer.Run(fmt.Sprintf("%s:%d", conf.WebUi.Host, conf.WebUi.WebUiPort), cli)
 	c := server.Console
 	r := server.Restart