Use larger OpenSSL chunk size limit w/Python 3.10+

Author: jakirkham

distributed/comm/tcp.py

@@ -45,7 +45,10 @@
 
 # Workaround for OpenSSL 1.0.2 (can drop with OpenSSL 1.1.1)
 # ref: https://bugs.python.org/issue42853
-OPENSSL_MAX_CHUNKSIZE = 256 ** ctypes.sizeof(ctypes.c_int) // 2 - 1
+if sys.version_info < (3, 10):
+    OPENSSL_MAX_CHUNKSIZE = 256 ** ctypes.sizeof(ctypes.c_int) // 2 - 1
+else:
+    OPENSSL_MAX_CHUNKSIZE = 256 ** ctypes.sizeof(ctypes.c_size_t) - 1
 
 MAX_BUFFER_SIZE = MEMORY_LIMIT / 2