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Alternate HTTP1 and HTTP2 attempts #21

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Merged
sindresorhus merged 1 commit into from
May 15, 2026
+7 −8
Merged

Alternate HTTP1 and HTTP2 attempts #21

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15 changes: 7 additions & 8 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@ import http from 'node:http';
import http2 from 'node:http2';

const RETRY_DELAY = 200;
const HTTP1_ATTEMPTS = 6; // 3 rounds × 2 IP versions

const tryHttp1 = ({
ipVersion,
Expand Down Expand Up @@ -98,7 +97,6 @@ export default function waitForLocalhost({
signal,
} = {}) {
return new Promise((resolve, reject) => {
let attemptCount = 0;
const method = useGet ? 'GET' : 'HEAD';
let retryTimeout;

Expand Down Expand Up @@ -130,9 +128,7 @@ export default function waitForLocalhost({
}
};

const tryRequest = (ipVersion, onError) => {
const useHttp2 = attemptCount > HTTP1_ATTEMPTS;
const requestFunction = useHttp2 ? tryHttp2 : tryHttp1;
const tryRequest = (ipVersion, requestFunction, onError) => {
requestFunction({
ipVersion,
onError,
Expand All @@ -149,9 +145,12 @@ export default function waitForLocalhost({
};

const attempt = () => {
attemptCount++;
tryRequest(4, () => {
tryRequest(6, retry);
tryRequest(4, tryHttp1, () => {
tryRequest(6, tryHttp1, () => {
tryRequest(4, tryHttp2, () => {
tryRequest(6, tryHttp2, retry);
});
});
});
};

Expand Down