@damngood 额..我谷歌了一下搜不到啊..你说的这些东西我记得都是tcp自己就能解决的啊..我找到的唯一把tcp和icmp关联起来的是: In current TCP networks, TCP relies on packet drops as the indication of congestion. TCP implementation also respond to ICMP source quench messages, but they are rarely used because they consume network bandwidth in times of congestion.