Upgrading server dependancies (#6431)

vendor/github.com/gorilla/websocket/examples/chat/home.html

@@ -9,7 +9,7 @@ window.onload = function () {
     var log = document.getElementById("log");
 
     function appendLog(item) {
-        var doScroll = log.scrollTop === log.scrollHeight - log.clientHeight;
+        var doScroll = log.scrollTop > log.scrollHeight - log.clientHeight - 1;
         log.appendChild(item);
         if (doScroll) {
             log.scrollTop = log.scrollHeight - log.clientHeight;
@@ -29,7 +29,7 @@ window.onload = function () {
     };
 
     if (window["WebSocket"]) {
-        conn = new WebSocket("ws://{{$}}/ws");
+        conn = new WebSocket("ws://" + document.location.host + "/ws");
         conn.onclose = function (evt) {
             var item = document.createElement("div");
             item.innerHTML = "<b>Connection closed.</b>";

vendor/github.com/gorilla/websocket/examples/chat/main.go

@@ -8,11 +8,9 @@ import (
 	"flag"
 	"log"
 	"net/http"
-	"text/template"
 )
 
 var addr = flag.String("addr", ":8080", "http service address")
-var homeTemplate = template.Must(template.ParseFiles("home.html"))
 
 func serveHome(w http.ResponseWriter, r *http.Request) {
 	log.Println(r.URL)
@@ -24,8 +22,7 @@ func serveHome(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "Method not allowed", 405)
 		return
 	}
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	homeTemplate.Execute(w, r.Host)
+	http.ServeFile(w, r, "home.html")
 }
 
 func main() {