julian.kiedaischandClaude Opus 5.5
7e0348636c
TcpRun loses exactly one frame (loseFirst: the card's output buffer drops it; the sender's packet log still shows it, as with setDrop) in three new stories: lostSynAck, lostFin, lostLastFin. Measured: Java never repeats a SYN+ACK or a FIN. The server gives a handshake up after one timeout (3 RTT) and closes with a FIN from SYN_RCVD (its boundary check sometimes lets it wait twice; it means once). After its FIN a socket waits at most five times, each wait ended by a segment or the timeout; then it is gone. The core does the same (TCP_CLOSING_WAITS, with TIME_WAIT in the loop) and shows CLOSED where Java leaves the state standing (a named Java bug). One departure: a repeated SYN in SYN_RCVD gets the SYN+ACK once more and the wait starts anew; Java closes there, but its client never repeats the SYN. lostSynAck is compared up to the second SYN (JAVA_UNTIL); the rest is an engine test. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
205 lines
4.6 KiB
JSON
205 lines
4.6 KiB
JSON
{
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"frames": {
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"00000000-0000-0000-0000-000000000101": [
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{
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"time": 850,
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"source": "02:00:00:00:01:12",
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"destination": "FF:FF:FF:FF:FF:FF",
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"arp": 1,
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"senderIp": "192.168.0.20",
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"targetIp": "192.168.0.10"
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},
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{
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"time": 852,
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"source": "02:00:00:00:01:11",
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"destination": "02:00:00:00:01:12",
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"arp": 2,
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"senderIp": "192.168.0.10",
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"targetIp": "192.168.0.20"
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},
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{
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"time": 1079,
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"source": "02:00:00:00:01:12",
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"destination": "02:00:00:00:01:11",
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"sourceIp": "192.168.0.20",
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"destinationIp": "192.168.0.10",
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"protocol": 6,
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"sourcePort": 61346,
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"destinationPort": 80,
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"payload": null,
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"tcpFlags": "S",
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"sequence": 2000000,
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"acknowledgement": 0
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},
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{
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"time": 1081,
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"source": "02:00:00:00:01:11",
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"destination": "02:00:00:00:01:12",
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"sourceIp": "192.168.0.10",
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"destinationIp": "192.168.0.20",
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"protocol": 6,
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"sourcePort": 80,
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"destinationPort": 61346,
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"payload": null,
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"tcpFlags": "SA",
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"sequence": 1000000,
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"acknowledgement": 2000001
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},
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{
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"time": 1305,
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"source": "02:00:00:00:01:12",
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"destination": "02:00:00:00:01:11",
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"sourceIp": "192.168.0.20",
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"destinationIp": "192.168.0.10",
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"protocol": 6,
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"sourcePort": 61346,
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"destinationPort": 80,
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"payload": null,
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"tcpFlags": "A",
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"sequence": 2000001,
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"acknowledgement": 1000001
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}
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],
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"00000000-0000-0000-0000-000000000102": [
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{
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"time": 729,
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"source": "02:00:00:00:01:12",
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"destination": "FF:FF:FF:FF:FF:FF",
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"arp": 1,
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"senderIp": "192.168.0.20",
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"targetIp": "192.168.0.10"
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},
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{
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"time": 963,
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"source": "02:00:00:00:01:11",
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"destination": "02:00:00:00:01:12",
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"arp": 2,
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"senderIp": "192.168.0.10",
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"targetIp": "192.168.0.20"
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},
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{
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"time": 966,
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"source": "02:00:00:00:01:12",
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"destination": "02:00:00:00:01:11",
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"sourceIp": "192.168.0.20",
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"destinationIp": "192.168.0.10",
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"protocol": 6,
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"sourcePort": 61346,
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"destinationPort": 80,
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"payload": null,
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"tcpFlags": "S",
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"sequence": 2000000,
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"acknowledgement": 0
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},
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{
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"time": 1193,
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"source": "02:00:00:00:01:11",
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"destination": "02:00:00:00:01:12",
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"sourceIp": "192.168.0.10",
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"destinationIp": "192.168.0.20",
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"protocol": 6,
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"sourcePort": 80,
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"destinationPort": 61346,
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"payload": null,
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"tcpFlags": "SA",
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"sequence": 1000000,
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"acknowledgement": 2000001
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},
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{
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"time": 1193,
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"source": "02:00:00:00:01:12",
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"destination": "02:00:00:00:01:11",
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"sourceIp": "192.168.0.20",
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"destinationIp": "192.168.0.10",
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"protocol": 6,
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"sourcePort": 61346,
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"destinationPort": 80,
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"payload": null,
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"tcpFlags": "A",
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"sequence": 2000001,
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"acknowledgement": 1000001
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},
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{
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"time": 1716,
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"source": "02:00:00:00:01:12",
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"destination": "02:00:00:00:01:11",
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"sourceIp": "192.168.0.20",
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"destinationIp": "192.168.0.10",
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"protocol": 6,
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"sourcePort": 61346,
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"destinationPort": 80,
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"payload": null,
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"tcpFlags": "F",
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"sequence": 2000001,
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"acknowledgement": 0
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}
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],
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"00000000-0000-0000-0000-000000000103": [
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{
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"time": 850,
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"source": "02:00:00:00:01:12",
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"destination": "FF:FF:FF:FF:FF:FF",
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"arp": 1,
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"senderIp": "192.168.0.20",
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"targetIp": "192.168.0.10"
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}
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]
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},
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"events": [
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[
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214,
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"server oeffnen called"
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],
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[
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715,
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"client verbinden called"
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],
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[
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1216,
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"client verbinden returned"
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],
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[
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1317,
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"server oeffnen returned"
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],
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[
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1716,
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"client schliessen called"
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],
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[
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1716,
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"client schliessen returned"
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],
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[
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1716,
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"lost FIN"
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]
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],
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"states": {
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"client": [
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[
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715,
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"CLOSED"
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],
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[
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725,
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"SYN_SENT"
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],
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[
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1195,
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"ESTABLISHED"
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],
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[
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1717,
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"FIN_WAIT_1"
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]
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],
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"server": [
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[
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1317,
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"ESTABLISHED"
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]
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]
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}
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}
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