julian.kiedaischandClaude Opus 5.5
ed437f9b5c
The client follows Java's DHCPClient instead of Swift: one DISCOVER or REQUEST per attempt, an answer that does not fit is read and dropped, the ARP check waits a round trip (an answer for the address ends it at once, then DECLINE), a timeout repeats the state's message, and the fifth turns to a link-local address 169.254.1.x/16 (ARP probe, ARP reply to all); no old address is given back. DHCP round trip times follow the speed as in Java (50 cables, 2750 ms at 90 %; Swift: fixed 2500 ms). Not taken from Java: the client gives up after five occupied link-local addresses (Java searches on without end), and an ARP packet for another address does not end the check. dhcpJava.test.ts compares the four DHCP scenarios with DhcpRun's Java runs; the Swift comparison only checks that they differ. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
44 lines
1.6 KiB
TypeScript
44 lines
1.6 KiB
TypeScript
// Ported from filius-ipad (GPLv2/GPLv3):
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// State/TopologyNetworkRuntimeEngine.swift (TopologyNetworkRuntimeSpeed)
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// Java counterpart: filius.hardware.Verbindung (MIN_VERZOEGERUNG_IN_MILLIS,
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// verzoegerungsFaktor) and GUIMainMenu.updateLatency.
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export const MINIMUM_SPEED_PERCENT = 1;
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export const MAXIMUM_SPEED_PERCENT = 100;
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export const DEFAULT_SPEED_PERCENT = 90;
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export const JAVA_MINIMUM_LINK_DELAY_MILLISECONDS = 5;
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/** Java's Verbindung.MAX_HOPS: the round trip time is this many cables. */
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export const JAVA_MAXIMUM_HOPS = 50;
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export class RuntimeSpeed {
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readonly percent: number;
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constructor(percent: number = DEFAULT_SPEED_PERCENT) {
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this.percent = Math.min(MAXIMUM_SPEED_PERCENT, Math.max(MINIMUM_SPEED_PERCENT, Math.trunc(percent)));
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}
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/** Java's delay factor: 1 at full speed, 100 at the slowest. */
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get javaDelayFactor(): number {
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return MAXIMUM_SPEED_PERCENT - this.percent + 1;
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}
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/** How long a frame travels over one cable. */
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get linkTransmissionDelayMilliseconds(): number {
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return JAVA_MINIMUM_LINK_DELAY_MILLISECONDS * this.javaDelayFactor;
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}
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/**
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* Java's Verbindung.holeRTT: how long an answer may take, 50 cables (2750 ms
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* at the default 90 %). Java's RTT factor (a start option, 1 to 5) is 1.
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*/
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get roundTripTimeMilliseconds(): number {
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return JAVA_MAXIMUM_HOPS * this.linkTransmissionDelayMilliseconds;
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}
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/** A base delay scaled like a cable, or undefined past the safe integer range. */
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scaledLinkDelay(baseMilliseconds: number): number | undefined {
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const delay = baseMilliseconds * this.javaDelayFactor;
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return Number.isSafeInteger(delay) ? delay : undefined;
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}
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}
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