From 7ec2019a3b5fa7905b4ad99b23e29da61a426be7 Mon Sep 17 00:00:00 2001
From: tt2468 <tt2468@gmail.com>
Date: Mon, 4 May 2020 17:36:11 -0700
Subject: [PATCH] Require target in `call()` method

The `call` method used to allow both `to` and `sid` to be `None`, however without a target, it broadcasts to all connected clients, and can have very disastrous results in some cases.
---
 socketio/asyncio_server.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/socketio/asyncio_server.py b/socketio/asyncio_server.py
index dcb4307..845f5b3 100644
--- a/socketio/asyncio_server.py
+++ b/socketio/asyncio_server.py
@@ -209,6 +209,8 @@ class AsyncServer(server.Server):
 
         Note 2: this method is a coroutine.
         """
+        if to == None and sid == None:
+            raise TypeError('Missing `to` or `sid`.')
         if not self.async_handlers:
             raise RuntimeError(
                 'Cannot use call() when async_handlers is False.')