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// SPDX-License-Identifier: GPL-2.0
// Test PRR-slowstart implementation. The sender sends 20 packets. Packet
// 1 to 4 are lost. The sender writes another 10 packets.
`./defaults.sh`
// Establish a connection.
0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0 bind(3, ..., ...) = 0
+0 listen(3, 1) = 0
+0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
+.01 < . 1:1(0) ack 1 win 320
+0 accept(3, ..., ...) = 4
// Send 20 data segments.
+0 write(4, ..., 10000) = 10000
+0 > P. 1:10001(10000) ack 1
// Lost packet 1,2,3,4
+.01 < . 1:1(0) ack 1 win 320 <sack 4001:5001,nop,nop>
+.002 < . 1:1(0) ack 1 win 320 <sack 4001:6001,nop,nop>
+0 < . 1:1(0) ack 1 win 320 <sack 4001:7001,nop,nop>
+0 > . 1:1001(1000) ack 1
+0 < . 1:1(0) ack 1 win 320 <sack 4001:8001,nop,nop>
+0 > . 1001:2001(1000) ack 1
+0 < . 1:1(0) ack 1 win 320 <sack 4001:9001,nop,nop>
+0 > . 2001:3001(1000) ack 1
+0 < . 1:1(0) ack 1 win 320 <sack 4001:10001,nop,nop>
+0 > . 3001:4001(1000) ack 1
// Receiver ACKs all data.
+.01 < . 1:1(0) ack 1001 win 320 <sack 4001:10001,nop,nop>
+0 < . 1:1(0) ack 2001 win 320 <sack 4001:10001,nop,nop>
+0 < . 1:1(0) ack 3001 win 320 <sack 4001:10001,nop,nop>
+0 < . 1:1(0) ack 10001 win 320
// Writes another 10 packets, which the ssthresh*mss amount
// should be sent right away
+.01 write(4, ..., 10000) = 10000
+0 > . 10001:17001(7000) ack 1
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