The specification of TCP as well as its three way handshake is introduced in the paper.

文中介绍了TCP报文的封装情况、TCP报文段格式规定和TCP连接中的“三次握手”协议。

youdao

For example, a status of SYN_SENT indicates that a three-way handshake has been initiated by your host, but as yet no acknowledgement has been received from the target host.

例如syn_sent状态表示您的主机已经发起了三阶段握手，但是还没有从目标主机收到确认。

youdao

Or if your server has HTTP keepalives disabled, doing another TCP three-way handshake adds another round trip, doubling this latency.

如果服务器禁用了HTTP持续连接（keepalives），那么还需要再进行一次TCP三次握手，这又导致一次双向连接，造成延迟时间加倍的后果。

youdao