24 lines
1.0 KiB
JavaScript
24 lines
1.0 KiB
JavaScript
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import net from 'node:net';
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// Node caps each happy-eyeballs connect attempt at 250ms by default
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// (autoSelectFamilyAttemptTimeout). TCP handshakes to provider endpoints that are
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// geographically distant routinely take 300-1500ms, so fetch() from a Node process
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// aborts every attempt (ETIMEDOUT) and surfaces "fetch failed" even though the host
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// is reachable — e.g. the z.ai quota endpoint from an IPv4-only egress (#3399).
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//
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// Every Node process entrypoint that performs provider fetches raises the
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// per-attempt cap. Family autoselection itself stays enabled, so the IPv6→IPv4
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// fallback and ::1/localhost servers keep working; disabling it instead breaks
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// local MCP servers. Runtimes without the setter (Bun's fetch path, older Node)
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// are a no-op.
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export const CONNECT_ATTEMPT_TIMEOUT_MS = 5_000;
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export const applyConnectAttemptTimeout = (netModule = net) => {
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try {
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netModule.setDefaultAutoSelectFamilyAttemptTimeout(CONNECT_ATTEMPT_TIMEOUT_MS);
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return true;
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} catch {
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return false;
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}
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};
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