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fix(@angular/build): force HTTP/1.1 in dev-server SSR with SSL #29147

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Merged
merged 1 commit into from
Dec 17, 2024
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fix(@angular/build): force HTTP/1.1 in dev-server SSR with SSL #29147

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10 changes: 9 additions & 1 deletion packages/angular/build/src/builders/dev-server/vite-server.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -681,7 +681,15 @@ export async function setupServer(
headers: serverOptions.headers,
// Disable the websocket if live reload is disabled (false/undefined are the only valid values)
ws: serverOptions.liveReload === false && serverOptions.hmr === false ? false : undefined,
proxy,
// When server-side rendering (SSR) is enabled togather with SSL and Express is being used,
// we must configure Vite to use HTTP/1.1.
// This is necessary because Express does not support HTTP/2.
// We achieve this by defining an empty proxy.
// See: https://github.com/vitejs/vite/blob/c4b532cc900bf988073583511f57bd581755d5e3/packages/vite/src/node/http.ts#L106
proxy:
serverOptions.ssl && ssrMode === ServerSsrMode.ExternalSsrMiddleware
? (proxy ?? {})
: proxy,
cors: {
// Allow preflight requests to be proxied.
preflightContinue: true,
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