| // Test that we retransmit SYN-ACK with ACE and without |
| // AccECN options after |
| // SYN-ACK was lost and TCP moved to TCPS_SYN_RECEIVED |
| |
| `./defaults.sh |
| sysctl -q net.ipv4.tcp_ecn=3 |
| sysctl -q net.ipv4.tcp_ecn_option=2 |
| ` |
| |
| +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 < [noecn] SEWA 0:0(0) win 32792 <mss 1460,nop,nop,sackOK,nop,wscale 8> |
| +.002 > [noecn] SW. 0:0(0) ack 1 <mss 1460,ECN e1b 1 ceb 0 e0b 1,nop,nop,nop,sackOK,nop,wscale 8> |
| |
| // Retransmit SYN-ACK without option |
| +1~+1.1 > [noecn] SW. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8> |
| +0.1 < [noecn] W. 1:1(0) ack 1 win 320 <ECN e0b 1 ceb 0 e1b 1,nop> |
| +.002 accept(3, ..., ...) = 4 |
| |
| // We try to write with AccECN option |
| +0.01 write(4, ..., 100) = 100 |
| +.002 > [ect0] P5. 1:101(100) ack 1 <ECN e1b 1 ceb 0 e0b 1,nop> |
