async def client(loop:IOLoop):
try:
print("try to connect {0:s}:{1:s}".format(args.host,args.port))
stream = await clientObj.connect(args.host,args.port) #type:tornado.concurrent.futures.Future
stream.set_nodelay(True)
async def handle():
while True:
command=Q.get().split(' ')
act=command[0]
if act=='p':
print(goodsTable)
elif act=='s':
good=goodsList[int(command[1])]
RFID = bytes.fromhex(good[0])
msg =SSCEncoder.SSCFrameEncoder(RFID,CartID,op,opData)
print("sengMessage:",binascii.b2a_hex(msg))
await stream.write(msg)
elif act=='d':
msg = command[1].encode()
await stream.write(msg)
def waitKey():
while True:
Q.put_nowait(input('>'))
loop.add_callback(handle)
loop.run_in_executor(None,waitKey)
except StreamClosedError :
print("error connecting, try in 5 sec")
await gen.sleep(5)
loop.add_callback(functools.partial(client,loop))
