GH-86508: skip binding to local addresses of different family in `asyncio.open_connection` (GH-100615)

(cherry picked from commit ba8dcdbcab5fd9989be6c9a51002394e782c463c)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py
index 8f3e1b3..4692f95 100644
--- a/Lib/asyncio/base_events.py
+++ b/Lib/asyncio/base_events.py
@@ -950,7 +950,10 @@ class BaseEventLoop(events.AbstractEventLoop):
             sock = socket.socket(family=family, type=type_, proto=proto)
             sock.setblocking(False)
             if local_addr_infos is not None:
-                for _, _, _, _, laddr in local_addr_infos:
+                for lfamily, _, _, _, laddr in local_addr_infos:
+                    # skip local addresses of different family
+                    if lfamily != family:
+                        continue
                     try:
                         sock.bind(laddr)
                         break
@@ -963,7 +966,10 @@ class BaseEventLoop(events.AbstractEventLoop):
                         exc = OSError(exc.errno, msg)
                         my_exceptions.append(exc)
                 else:  # all bind attempts failed
-                    raise my_exceptions.pop()
+                    if my_exceptions:
+                        raise my_exceptions.pop()
+                    else:
+                        raise OSError(f"no matching local address with {family=} found")
             await self.sock_connect(sock, address)
             return sock
         except OSError as exc: