fix reuse port bug
fix reuse port bug

daodaoliang/tcpcopy,horryq/tcpcopy,u20024804/tcpcopy,wfxiang08/tcpcopy,liviusATnetskope/second,left2right/tcpcopy,eliteYang/tcpcopy,eliteYang/tcpcopy,sshling/tcpcopy,wfxiang08/tcpcopy,left2right/tcpcopy,ycaihua/tcpcopy,ycaihua/tcpcopy,daodaoliang/tcpcopy,caosiyang/tcpcopy,liviusATnetskope/second,horryq/tcpcopy,caosiyang/tcpcopy,sshling/tcpcopy,u20024804/tcpcopy