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-rwxr-xr-xtest/functional/test_framework/mininode.py12
1 files changed, 11 insertions, 1 deletions
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py
index d5b1a90687..ccf767d357 100755
--- a/test/functional/test_framework/mininode.py
+++ b/test/functional/test_framework/mininode.py
@@ -179,7 +179,17 @@ class P2PConnection(asyncio.Protocol):
raise IOError('Not connected')
self._log_message("send", message)
tmsg = self._build_message(message)
- NetworkThread.network_event_loop.call_soon_threadsafe(lambda: self._transport and not self._transport.is_closing() and self._transport.write(tmsg))
+
+ def maybe_write():
+ if not self._transport:
+ return
+ # Python <3.4.4 does not have is_closing, so we have to check for
+ # its existence explicitly as long as Bitcoin Core supports all
+ # Python 3.4 versions.
+ if hasattr(self._transport, 'is_closing') and self._transport.is_closing():
+ return
+ self._transport.write(tmsg)
+ NetworkThread.network_event_loop.call_soon_threadsafe(maybe_write)
# Class utility methods