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fix: listen on ipv6 loopback for gateway

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This commit is contained in:
Peter Steinberger
2026-01-25 05:48:40 +00:00
parent ef078fec70
commit bac80f0886
7 changed files with 107 additions and 100 deletions
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22
src/gateway/net.ts
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@@ -97,14 +97,14 @@ export async function resolveGatewayBindHost(
if (mode === "loopback") {
// 127.0.0.1 rarely fails, but handle gracefully
if (await canBindTo("127.0.0.1")) return "127.0.0.1";
if (await canBindToHost("127.0.0.1")) return "127.0.0.1";
return "0.0.0.0"; // extreme fallback
}
if (mode === "tailnet") {
const tailnetIP = pickPrimaryTailnetIPv4();
if (tailnetIP && (await canBindTo(tailnetIP))) return tailnetIP;
if (await canBindTo("127.0.0.1")) return "127.0.0.1";
if (tailnetIP && (await canBindToHost(tailnetIP))) return tailnetIP;
if (await canBindToHost("127.0.0.1")) return "127.0.0.1";
return "0.0.0.0";
}
@@ -116,13 +116,13 @@ export async function resolveGatewayBindHost(
const host = customHost?.trim();
if (!host) return "0.0.0.0"; // invalid config → fall back to all
if (isValidIPv4(host) && (await canBindTo(host))) return host;
if (isValidIPv4(host) && (await canBindToHost(host))) return host;
// Custom IP failed → fall back to LAN
return "0.0.0.0";
}
if (mode === "auto") {
if (await canBindTo("127.0.0.1")) return "127.0.0.1";
if (await canBindToHost("127.0.0.1")) return "127.0.0.1";
return "0.0.0.0";
}
@@ -136,7 +136,7 @@ export async function resolveGatewayBindHost(
* @param host - The host address to test
* @returns True if we can successfully bind to this address
*/
async function canBindTo(host: string): Promise<boolean> {
export async function canBindToHost(host: string): Promise<boolean> {
return new Promise((resolve) => {
const testServer = net.createServer();
testServer.once("error", () => {
@@ -151,6 +151,16 @@ async function canBindTo(host: string): Promise<boolean> {
});
}
export async function resolveGatewayListenHosts(
bindHost: string,
opts?: { canBindToHost?: (host: string) => Promise<boolean> },
): Promise<string[]> {
if (bindHost !== "127.0.0.1") return [bindHost];
const canBind = opts?.canBindToHost ?? canBindToHost;
if (await canBind("::1")) return [bindHost, "::1"];
return [bindHost];
}
/**
* Validate if a string is a valid IPv4 address.
*