fix flaky test involving web_server.py in windows

test/web_server.py

@@ -171,8 +171,6 @@ class http_handler(BaseHTTPRequestHandler):
                     self.send_header('Content-Encoding', 'gzip')
                 if not keepalive:
                     self.send_header("Connection", "close")
-                    if not use_ssl:
-                        self.request.shutdown(socket.SHUT_RD)
 
                 self.end_headers()
 
@@ -203,6 +201,11 @@ class http_handler(BaseHTTPRequestHandler):
                     self.end_headers()
                 except Exception:
                     pass
+            if not keepalive and not use_ssl:
+                try:
+                    self.request.shutdown(socket.SHUT_RD)
+                except Exception:
+                    pass
 
         print("...DONE")
         sys.stdout.flush()