# server finishes sending a flight of data:
04:23:49.383419 IP 51.91.154.158.443 > 188.120.85.11.55038: . 358577:365817(7240) ack 395 win 182 <nop,nop,TS val 1514702387 ecr 72958509>
04:23:49.384558 IP 51.91.154.158.443 > 188.120.85.11.55038: . 365817:373057(7240) ack 395 win 182 <nop,nop,TS val 1514702388 ecr 72958509>
04:23:49.385693 IP 51.91.154.158.443 > 188.120.85.11.55038: . 373057:380297(7240) ack 395 win 182 <nop,nop,TS val 1514702389 ecr 72958509>
04:23:49.386798 IP 51.91.154.158.443 > 188.120.85.11.55038: . 380297:387537(7240) ack 395 win 182 <nop,nop,TS val 1514702390 ecr 72958509>
04:23:49.387903 IP 51.91.154.158.443 > 188.120.85.11.55038: . 387537:394777(7240) ack 395 win 182 <nop,nop,TS val 1514702391 ecr 72958509>
04:23:49.389012 IP 51.91.154.158.443 > 188.120.85.11.55038: . 394777:402017(7240) ack 395 win 182 <nop,nop,TS val 1514702392 ecr 72958509>
04:23:49.390117 IP 51.91.154.158.443 > 188.120.85.11.55038: P. 402017:406316(4299) ack 395 win 182 <nop,nop,TS val 1514702393 ecr 72958509>

# client ACKs the first portion of the flight:
04:23:49.492714 IP 188.120.85.11.55038 > 51.91.154.158.443: . 395:395(0) ack 3111 win 2087 <nop,nop,TS val 72958562 ecr 1514702331>
04:23:49.508450 IP 188.120.85.11.55038 > 51.91.154.158.443: . 395:395(0) ack 189161 win 1540 <nop,nop,TS val 72958563 ecr 1514702332>

# client sends a request:
04:23:49.543869 IP 188.120.85.11.55038 > 51.91.154.158.443: P. 395:498(103) ack 189161 win 1770 <nop,nop,TS val 72958567 ecr 1514702332>
# server ACKs request:
04:23:49.543928 IP 51.91.154.158.443 > 188.120.85.11.55038: . 406316:406316(0) ack 498 win 182 <nop,nop,TS val 1514702547 ecr 72958567>

# client sends another request:
04:23:49.565850 IP 188.120.85.11.55038 > 51.91.154.158.443: P. 498:705(207) ack 189161 win 2087 <nop,nop,TS val 72958569 ecr 1514702332>
# server ACKs request:
04:23:49.565888 IP 51.91.154.158.443 > 188.120.85.11.55038: . 406316:406316(0) ack 705 win 182 <nop,nop,TS val 1514702569 ecr 72958569>

# server sends TLP retransmit:
04:23:49.824734 IP 51.91.154.158.443 > 188.120.85.11.55038: P. 404913:406316(1403) ack 705 win 182 <nop,nop,TS val 1514702828 ecr 72958569>
# client SACKs TLP retransmit:
04:23:49.846128 IP 188.120.85.11.55038 > 51.91.154.158.443: . 705:705(0) ack 189161 win 2087 <nop,nop,TS val 72958597 ecr 1514702332,nop,nop,sack 1 {404913:406316}>

# server fast-retransmits head packet at snd_una:
04:23:49.846141 IP 51.91.154.158.443 > 188.120.85.11.55038: . 189161:190609(1448) ack 705 win 182 <nop,nop,TS val 1514702849 ecr 72958597>
# 21ms later, client cumulatively ACKs, DSACKs, and echoes timestamp from the fast retransmit:
04:23:49.867017 IP 188.120.85.11.55038 > 51.91.154.158.443: . 705:705(0) ack 190609 win 2082 <nop,nop,TS val 72958599 ecr 1514702849,nop,nop,sack 2 {189161:190609}{404913:406316}>

# server RTOs and retransmits head packet at snd_una:
04:23:50.240699 IP 51.91.154.158.443 > 188.120.85.11.55038: . 190609:192057(1448) ack 705 win 182 <nop,nop,TS val 1514703244 ecr 72958599>
# 478ms later, client cumulatively ACKs, DSACKs, and echoes timestamp from the RTO retansmit:
04:23:50.718823 IP 188.120.85.11.55038 > 51.91.154.158.443: . 705:705(0) ack 192057 win 2080 <nop,nop,TS val 72958684 ecr 1514703244,nop,nop,sack 2 {190609:192057}{404913:406316}>

# again, server RTOs and retransmits head packet at snd_una:
04:23:51.328726 IP 51.91.154.158.443 > 188.120.85.11.55038: . 192057:193505(1448) ack 705 win 182 <nop,nop,TS val 1514704332 ecr 72958684>
# 620ms later, client again sends cumulative-ACK/DSACK/ecr...
04:23:51.949296 IP 188.120.85.11.55038 > 51.91.154.158.443: . 705:705(0) ack 193505 win 2080 <nop,nop,TS val 72958807 ecr 1514704332,nop,nop,sack 2 {192057:193505}{404913:406316}>

# repeat RTO/DSACK process, with ACKs arriving mostly just over 200ms after data is sent...