简单来说,是在数据包跟踪文件中已经被 ACK 确认过的数据分段,又再一次被重传发送,那么这个重传的数据分段会被标记为 [TCP Spurious Retransmission]。 但本案例既然说是虚假的 [TCP Spurious Retransmission],那么就意味着说是 Wireshark 判断错误。 问题信息 数据包跟踪文件基本信息如下: λ capinfos SR.pcapng Fil...
前言 TCP 分析展示 TCP Spurious Retransmission 定义 Packetdrill 示例 实例 总结 前言 默认情况下,Wireshark 的TCP 解析器会跟踪每个 TCP 会话的状态,并在检测到问题或潜在问题时提供额外的信息。在第一次打开捕获文件时,会对每个 TCP 数据包进行一次分析,数据包按照它们在数据包列表中出现的顺序进行处理。可以通过...
对于第一种情况,如果抓包点在服务端的话,wireshark很有可能就会把来自客户端的重传包标记为TCP Spurious Retransmission。 如下图,红线的TCP包为重传包,wireshark为该包添加了重传原因,是由于TRO超时导致,以及初传包序号45,并给出了当前的RTO超时时间。 8)TCP zerowindow 包种的“win”代表接收窗口的大小,当Wire...
Wireshark's Expert can detect "Spurious Retransmissions." What triggers these types of retransmissions and should you be worried about them? We'll analyze a trace to identify the most likely cause of these types of retransmissions.
call “needless retransmission” in our own expert system. “Needless” probably doesn’t sound technically weird enough, so in papers about those retransmissions they were labeled “spurious”. There is a bug report where the patch was mentioned athttps://bugs.wireshark.org/bugzilla/show_bug....
wireshark3.png Since the server actually received the data but the ESP didn't get the ACK (in time?) might it be possible to increase the retransmission timeout of the ESP? Thanks and best regards *Edit* Setting TcpAckFrequency to 1 in the Windows registry has helped dramatically! You ...
本案例所说的虚假的 [TCP Spurious Retransmission],虽然也指的是 Wireshark 判断错误,但真实的问题并不是 Wireshark 所产生。 问题信息 数据包跟踪文件基本信息如下: λ capinfos "SR 02.pcapng" File name: SR 02.pcapng File type: Wireshark/... - pcapng File encapsulation: Ethernet File timestamp pre...