57 lines
2.0 KiB
JavaScript
57 lines
2.0 KiB
JavaScript
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import { isResSent } from "../../shared/lib/utils";
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import { generateETag } from "../lib/etag";
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import fresh from "next/dist/compiled/fresh";
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import { setRevalidateHeaders } from "./revalidate-headers";
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import { RSC_CONTENT_TYPE_HEADER } from "../../client/components/app-router-headers";
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export { setRevalidateHeaders };
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export function sendEtagResponse(req, res, etag) {
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if (etag) {
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/**
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* The server generating a 304 response MUST generate any of the
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* following header fields that would have been sent in a 200 (OK)
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* response to the same request: Cache-Control, Content-Location, Date,
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* ETag, Expires, and Vary. https://tools.ietf.org/html/rfc7232#section-4.1
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*/ res.setHeader("ETag", etag);
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}
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if (fresh(req.headers, {
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etag
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})) {
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res.statusCode = 304;
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res.end();
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return true;
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}
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return false;
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}
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export async function sendRenderResult({ req, res, result, type, generateEtags, poweredByHeader, options }) {
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if (isResSent(res)) {
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return;
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}
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if (poweredByHeader && type === "html") {
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res.setHeader("X-Powered-By", "Next.js");
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}
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if (options != null) {
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setRevalidateHeaders(res, options);
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}
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const payload = result.isDynamic ? null : await result.toUnchunkedString();
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if (payload !== null) {
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const etag = generateEtags ? generateETag(payload) : undefined;
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if (sendEtagResponse(req, res, etag)) {
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return;
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}
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}
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if (!res.getHeader("Content-Type")) {
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res.setHeader("Content-Type", result.contentType ? result.contentType : type === "rsc" ? RSC_CONTENT_TYPE_HEADER : type === "json" ? "application/json" : "text/html; charset=utf-8");
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}
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if (payload) {
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res.setHeader("Content-Length", Buffer.byteLength(payload));
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}
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if (req.method === "HEAD") {
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res.end(null);
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} else if (payload !== null) {
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res.end(payload);
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} else {
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await result.pipe(res);
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}
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}
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//# sourceMappingURL=index.js.map
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