Issue #10141: Don't use hardcoded frame size in example, use struct.calcsize()
diff --git a/Doc/library/socket.rst b/Doc/library/socket.rst
index 030a421..f9e0780 100644
--- a/Doc/library/socket.rst
+++ b/Doc/library/socket.rst
@@ -1270,6 +1270,7 @@
# CAN frame packing/unpacking (see `struct can_frame` in <linux/can.h>)
can_frame_fmt = "=IB3x8s"
+ can_frame_size = struct.calcsize(can_frame_fmt)
def build_can_frame(can_id, data):
can_dlc = len(data)
@@ -1286,7 +1287,7 @@
s.bind(('vcan0',))
while True:
- cf, addr = s.recvfrom(16)
+ cf, addr = s.recvfrom(can_frame_size)
print('Received: can_id=%x, can_dlc=%x, data=%s' % dissect_can_frame(cf))