TCP报文段首部的源端口字段占（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30263' and id < 2448177 and id<>'2448177' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30263' and id > 2448177 and id<>'2448177' order by id asc limit 5