From: Bob Halley <halley@dnspython.org>
Date: Fri, 17 Dec 2021 16:19:46 +0000 (-0800)
Subject: Do not set asyncio future if it is already done.  [#740]
X-Git-Tag: v2.2.0rc1~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d6e4ff11a208c14fad28fc699426b0a2f8be8f9;p=thirdparty%2Fdnspython.git

Do not set asyncio future if it is already done.  [#740]
---

diff --git a/dns/_asyncio_backend.py b/dns/_asyncio_backend.py
index 4c8c0548..d737d13c 100644
--- a/dns/_asyncio_backend.py
+++ b/dns/_asyncio_backend.py
@@ -28,7 +28,7 @@ class _DatagramProtocol:
         self.transport = transport
 
     def datagram_received(self, data, addr):
-        if self.recvfrom:
+        if self.recvfrom and not self.recvfrom.done():
             self.recvfrom.set_result((data, addr))
             self.recvfrom = None