1. What is the highest throughput that this file transfer can achieve? Acceptable? 2. What is the network roundtrip time between client and server? 3. Is there any packet loss in this trace file? 4. In the handshakes, what TCP options are there? Which ones are missing? 5. What do ...
$ capinfos rsb2.cap File name: rsb2.cap File type: Wireshark/tcpdump/... - pcap File encapsulation: Ethernet Packet size limit: file hdr: 65535 bytes Number of packets: 510 k File size: 143 MB Data size: 135 MB Capture duration: 34 seconds Start time: Tue Jun 7 11:15:31 2016 ...
Wireshark menu, select Capture Stop.(5) In Wireshark Filter toolbar, enter https. Then click the Apply button.Only HTTP messages are displayed in the Packet List panel.(6) In the Packet List panel, look for the HTTP GET message2 from the Info column.Select this message, the protocols ...
本文的主角是TCP SACK机制,首先讲清楚为什么我们需要SACK机制,其次通过wireshark抓包展示真实世界中的SACK,再者引申经常与SACK一起出现的概念,讲清楚SACK机制并不是孤立的概念。要真正解决现实中的问题,是需要与其他TCP协议内容一起作用滴! 为什么需要SACK? 在讨论为什么需要SACK之前,我们应该先了解TCP接收数据的一个机制...