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feat(core): the command line's network commands ping, host, nslookup, arp and netstat after Java, measured against Java

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TerminalRun types lines into Java's command line on terminal-net at set
times; the engine types the same lines. New in the engine: an ICMP echo
in a program's thread (the first ICMP message after the send, whatever
it is), Java's route choice, the ARP table with Java's broadcast row, DNS
in a program's thread, ICMP broadcasts of a node's own network, and an
ARP wait that ends after what else happens at that millisecond.

Departures from Java: an echo is answered from the address asked
(RFC 792), network unreachable carries the packet with its sender, ping
names the host and takes only -b before it, arp and netstat list in the
order learned, netstat lists a UDP server's listening socket only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
julian.kiedaisch
2026-10-02 08:03:10 +00:00
co-authored by Claude Opus 5.5
parent 016f9461df
commit 495c449ef2
22 changed files with 33994 additions and 42 deletions
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packages/core/test/scenarios/terminal-net.scenario.json
+202
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{
"seed": 91,
"nodes": [
{
"id": "00000000-0000-0000-0000-000000000401",
"kind": "pc",
"ports": [
{
"id": "00000000-0000-0000-0000-000000000411",
"label": "eth0"
}
]
},
{
"id": "00000000-0000-0000-0000-000000000402",
"kind": "pc",
"ports": [
{
"id": "00000000-0000-0000-0000-000000000412",
"label": "eth0"
}
]
},
{
"id": "00000000-0000-0000-0000-000000000403",
"kind": "pc",
"ports": [
{
"id": "00000000-0000-0000-0000-000000000413",
"label": "eth0"
}
]
},
{
"id": "00000000-0000-0000-0000-000000000404",
"kind": "pc",
"ports": [
{
"id": "00000000-0000-0000-0000-000000000414",
"label": "eth0"
}
]
},
{
"id": "00000000-0000-0000-0000-000000000405",
"kind": "router",
"ports": [
{
"id": "00000000-0000-0000-0000-000000000451",
"label": "eth0"
},
{
"id": "00000000-0000-0000-0000-000000000452",
"label": "eth1"
}
]
},
{
"id": "00000000-0000-0000-0000-000000000406",
"kind": "pc",
"ports": [
{
"id": "00000000-0000-0000-0000-000000000416",
"label": "eth0"
}
]
},
{
"id": "00000000-0000-0000-0000-000000000407",
"kind": "networkSwitch",
"ports": [
{
"id": "00000000-0000-0000-0000-000000000471",
"label": "sw1"
},
{
"id": "00000000-0000-0000-0000-000000000472",
"label": "sw2"
},
{
"id": "00000000-0000-0000-0000-000000000473",
"label": "sw3"
},
{
"id": "00000000-0000-0000-0000-000000000474",
"label": "sw4"
},
{
"id": "00000000-0000-0000-0000-000000000475",
"label": "sw5"
}
]
}
],
"links": [
{
"id": "00000000-0000-0000-0000-00000000F401",
"sourceNode": "00000000-0000-0000-0000-000000000401",
"sourcePort": "00000000-0000-0000-0000-000000000411",
"targetNode": "00000000-0000-0000-0000-000000000407",
"targetPort": "00000000-0000-0000-0000-000000000471"
},
{
"id": "00000000-0000-0000-0000-00000000F402",
"sourceNode": "00000000-0000-0000-0000-000000000402",
"sourcePort": "00000000-0000-0000-0000-000000000412",
"targetNode": "00000000-0000-0000-0000-000000000407",
"targetPort": "00000000-0000-0000-0000-000000000472"
},
{
"id": "00000000-0000-0000-0000-00000000F403",
"sourceNode": "00000000-0000-0000-0000-000000000403",
"sourcePort": "00000000-0000-0000-0000-000000000413",
"targetNode": "00000000-0000-0000-0000-000000000407",
"targetPort": "00000000-0000-0000-0000-000000000473"
},
{
"id": "00000000-0000-0000-0000-00000000F404",
"sourceNode": "00000000-0000-0000-0000-000000000404",
"sourcePort": "00000000-0000-0000-0000-000000000414",
"targetNode": "00000000-0000-0000-0000-000000000407",
"targetPort": "00000000-0000-0000-0000-000000000474"
},
{
"id": "00000000-0000-0000-0000-00000000F405",
"sourceNode": "00000000-0000-0000-0000-000000000405",
"sourcePort": "00000000-0000-0000-0000-000000000451",
"targetNode": "00000000-0000-0000-0000-000000000407",
"targetPort": "00000000-0000-0000-0000-000000000475"
},
{
"id": "00000000-0000-0000-0000-00000000F406",
"sourceNode": "00000000-0000-0000-0000-000000000405",
"sourcePort": "00000000-0000-0000-0000-000000000452",
"targetNode": "00000000-0000-0000-0000-000000000406",
"targetPort": "00000000-0000-0000-0000-000000000416"
}
],
"devices": {
"00000000-0000-0000-0000-000000000401": {
"ip": "192.168.0.20",
"mask": "255.255.255.0",
"gateway": "192.168.0.1",
"dns": "192.168.0.10"
},
"00000000-0000-0000-0000-000000000402": {
"ip": "192.168.0.10",
"mask": "255.255.255.0"
},
"00000000-0000-0000-0000-000000000403": {
"ip": "192.168.0.30",
"mask": "255.255.255.0",
"gateway": "192.168.0.1",
"dns": "192.168.0.10"
},
"00000000-0000-0000-0000-000000000404": {
"ip": "192.168.0.31",
"mask": "255.255.255.0",
"gateway": "192.168.0.1",
"dns": "192.168.0.10"
},
"00000000-0000-0000-0000-000000000405": {
"ip": "192.168.0.1",
"mask": "255.255.255.0"
},
"00000000-0000-0000-0000-000000000406": {
"ip": "10.0.0.2",
"mask": "255.255.255.0",
"gateway": "10.0.0.1",
"dns": "192.168.0.53"
}
},
"interfaces": [
{
"node": "00000000-0000-0000-0000-000000000405",
"port": "00000000-0000-0000-0000-000000000451",
"ip": "192.168.0.1",
"mask": "255.255.255.0"
},
{
"node": "00000000-0000-0000-0000-000000000405",
"port": "00000000-0000-0000-0000-000000000452",
"ip": "10.0.0.1",
"mask": "255.255.255.0"
}
],
"dnsServers": {
"00000000-0000-0000-0000-000000000402": {
"records": [
"www.filius.de A 192.168.0.30",
"filius.de A 192.168.0.31",
"filius.de MX mail.filius.de",
"mail.filius.de A 192.168.0.30",
"multi.filius.de A 192.168.0.30",
"multi.filius.de A 192.168.0.31",
"fern.filius.de A 10.0.0.2",
"weg.filius.de A 192.168.0.99",
"post.filius.de MX mail.filius.de"
]
}
}
}