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During the establishment of a tcp connection, If the server returns syn and ack messages, The client does not confirm it for some reason. This is because the server needs to retransmit the syn + ack message and wait for the client's confirmation message until the tcp connection timeout. This state of waiting for the client to confirm the connection is usually called a half-open connection. The half-open connection will be kept in the connection table of the server until the connection is disconnected.这一章还是在别人家传的。Oppo has also invited many popular stars to speak for it in Taiwan.　NBC剧集《我们这一天》宣布一次性续订2、3季，这部Dan Fogelman打造的大热剧是这个秋季档收视人数第二的广播网剧情剧。新续订的两季还是每季18集。Meat quality, site damage, weapon attack type, action value, weapon chop site, etc.熊切和嘉导演，绫野刚主演。改编自芥川赏作家藤泽周同名小说，绫野刚饰演的主角研吾是剑道5段的高手，但日常只是在车站大厦担任警备员，每天沉迷酒精自甘堕落。与高中生融（村上虹郎饰）相遇后，对方的剑道才能被激发，二人相伴重新踏上追求剑道的道路