frontend: specify timeout for requests (#29)

frontend/lgproxy.go

@@ -6,6 +6,7 @@ import (
 	"net/url"
 	"strconv"
 	"strings"
+	"time"
 )
 
 type channelData struct {
@@ -46,7 +47,8 @@ func batchRequest(servers []string, endpoint string, command string) []string {
 			}
 			url := "http://" + hostname + ":" + strconv.Itoa(setting.proxyPort) + "/" + url.PathEscape(endpoint) + "?q=" + url.QueryEscape(command)
 			go func(url string, i int) {
-				response, err := http.Get(url)
+				client := http.Client{Timeout: 5 * time.Second}
+				response, err := client.Get(url)
 				if err != nil {
 					ch <- channelData{i, "request failed: " + err.Error() + "\n"}
 					return