add extension points for websockets role

(cherry picked from commit 830e4cd9fc)

kamailio/websockets-role.cfg

@@ -118,6 +118,8 @@ event_route[xhttp:request]
         exit;
     }
 
+    route_if_exists("WS_ON_BEFORE_HANSHAKE");
+
     if (ws_handle_handshake()) {
         $var(count) = $shtinc(websockets=>$var(ws_orig_ip)::count);
         $sht(websockets=>$ws_conid::ws_orig_ip) = $var(ws_orig_ip);
@@ -127,6 +129,7 @@ event_route[xhttp:request]
         } else {
             xlog("L_INFO", "websocket|log|opened websocket $ws_conid from $var(ws_orig_ip):$sp\n");
         }
+        route_if_exists("WS_ON_SUCCESSFULL_HANSHAKE");
         exit;
     }
 
@@ -138,7 +141,7 @@ event_route[websocket:closed]
 {
     $var(ws_orig_ip) = $sht(websockets=>$ws_conid::ws_orig_ip);
     $sht(websockets=>$ws_conid::ws_orig_ip) = $null;
-    
+
     $var(count) = $shtdec(websockets=>$si::count);
     if($var(ws_orig_ip) != $null && $si != $var(ws_orig_ip)) {
        $var(countip) = $shtdec(websockets=>$var(ws_orig_ip)::count);
@@ -148,4 +151,5 @@ event_route[websocket:closed]
        xlog("L_INFO", "websocket|log|closed websocket $ws_conid from $var(ws_orig_ip):$sp\n");
     }
     if ($var(count) < 1) $sht(websockets=>$si::count) = $null;
+    route_if_exists("WS_ON_CLOSE");
 }