Fix future issue in sock_connect()

CPython fixed the same issue in python/cpython#10419. Seems like under pressure, more write callbacks may happen before _remove_writer() is called, so we should check for done(). Fixes MagicStack#378
fantix · Feb 9, 2021 · 0360dab · 0360dab
1 parent 8c471f8
commit 0360dab
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/uvloop/loop.pyx b/uvloop/loop.pyx
@@ -1059,7 +1059,8 @@ cdef class Loop:
         return fut
 
     cdef _sock_connect_cb(self, fut, sock, address):
-        if fut.cancelled():
+        if fut.done():
+            # Refs #378: this may be called multiple times.
             return
 
         try: