$ tcpdump -s 1532 -Xx -i lo0 tcp port 5432 ... 19:24:27.626723 localhost.4750 > localhost.5432: S 5242155:5242155(0) win 16384 (DF) 0x0000 4500 003c 3c53 4000 4006 0067 7f00 0001 E..< localhost.4750: S 5323579:5323579(0) ack 5242156 win 57344 (DF) 0x0000 4500 003c 3c54 4000 4006 0066 7f00 0001 E..< localhost.5432: . ack 1 win 57344 (DF) 0x0000 4500 0034 3c55 4000 4006 006d 7f00 0001 E..4 localhost.5432: P 1:297(296) ack 1 win 57344 (DF) 0x0000 4500 015c 3c56 4000 4006 ff43 7f00 0001 E..\ localhost.4750: P 1:6(5) ack 297 win 57344 (DF) 0x0000 4500 0039 3c57 4000 4006 0066 7f00 0001 E..9 localhost.4750: P 6:16(10) ack 297 win 57344 (DF) 0x0000 4500 003e 3c58 4000 4006 0060 7f00 0001 E..> localhost.5432: P 297:327(30) ack 16 win 57344 (DF) 0x0000 4500 0052 3c59 4000 4006 004b 7f00 0001 E..R localhost.4750: P 16:77(61) ack 327 win 57344 (DF) 0x0000 4500 0071 3c5a 4000 4006 002b 7f00 0001 E..q localhost.5432: P 327:386(59) ack 77 win 57344 (DF) 0x0000 4500 006f 3c70 4000 4006 0017 7f00 0001 E..o localhost.4750: P 77:128(51) ack 386 win 57344 (DF) 0x0000 4500 0067 3c7a 4000 4006 0015 7f00 0001 E..g localhost.5432: F 386:386(0) ack 128 win 57344 (DF) 0x0000 4500 0034 3c7b 4000 4006 0047 7f00 0001 E..4<{@.@..G.... 0x0010 7f00 0001 128e 1538 004f fead 0051 3bbb .......8.O...Q;. 0x0020 8011 e000 03e5 0000 0101 080a 0ee4 8a1e ................ 0x0030 0ee4 8a1e .... 19:24:27.769462 localhost.5432 > localhost.4750: . ack 387 win 57344 (DF) 0x0000 4500 0034 3c7c 4000 4006 0046 7f00 0001 E..4<|@.@..F.... 0x0010 7f00 0001 1538 128e 0051 3bbb 004f feae .....8...Q;..O.. 0x0020 8010 e000 03e5 0000 0101 080a 0ee4 8a1e ................ 0x0030 0ee4 8a1e .... 19:24:27.769691 localhost.5432 > localhost.4750: F 128:128(0) ack 387 win 57344 (DF) 0x0000 4500 0034 3c7d 4000 4006 0045 7f00 0001 E..4<}@.@..E.... 0x0010 7f00 0001 1538 128e 0051 3bbb 004f feae .....8...Q;..O.. 0x0020 8011 e000 03e4 0000 0101 080a 0ee4 8a1e ................ 0x0030 0ee4 8a1e .... 19:24:27.769746 localhost.4750 > localhost.5432: . ack 129 win 57344 (DF) 0x0000 4500 0034 3c7e 4000 4006 0044 7f00 0001 E..4<~@.@..D.... 0x0010 7f00 0001 128e 1538 004f feae 0051 3bbc .......8.O...Q;. 0x0020 8010 e000 03e4 0000 0101 080a 0ee4 8a1e ................ 0x0030 0ee4 8a1e ....