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base-server.ts
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base-server.ts
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import type { __ApiPreviewProps } from './api-utils'
import type { FontManifest, FontConfig } from './font-utils'
import type { LoadComponentsReturnType } from './load-components'
import type { MiddlewareRouteMatch } from '../shared/lib/router/utils/middleware-route-matcher'
import type { Params } from '../shared/lib/router/utils/route-matcher'
import type { NextConfig, NextConfigComplete } from './config-shared'
import type {
NextParsedUrlQuery,
NextUrlWithParsedQuery,
RequestMeta,
} from './request-meta'
import type { ParsedUrlQuery } from 'querystring'
import type { RenderOptsPartial as PagesRenderOptsPartial } from './render'
import type { RenderOptsPartial as AppRenderOptsPartial } from './app-render/types'
import type { ResponseCacheBase, ResponseCacheEntry } from './response-cache'
import type { UrlWithParsedQuery } from 'url'
import {
NormalizeError,
DecodeError,
normalizeRepeatedSlashes,
MissingStaticPage,
} from '../shared/lib/utils'
import type { PreviewData } from 'next/types'
import type { PagesManifest } from '../build/webpack/plugins/pages-manifest-plugin'
import type { BaseNextRequest, BaseNextResponse } from './base-http'
import type {
ManifestRewriteRoute,
ManifestRoute,
PrerenderManifest,
} from '../build'
import type { ClientReferenceManifest } from '../build/webpack/plugins/flight-manifest-plugin'
import type { NextFontManifest } from '../build/webpack/plugins/next-font-manifest-plugin'
import type { AppPageRouteModule } from './future/route-modules/app-page/module'
import type { NodeNextRequest, NodeNextResponse } from './base-http/node'
import type { WebNextRequest, WebNextResponse } from './base-http/web'
import type { PagesAPIRouteMatch } from './future/route-matches/pages-api-route-match'
import type { AppRouteRouteHandlerContext } from './future/route-modules/app-route/module'
import type { Server as HTTPServer } from 'http'
import type { MiddlewareMatcher } from '../build/analysis/get-page-static-info'
import type { TLSSocket } from 'tls'
import type { PathnameNormalizer } from './future/normalizers/request/pathname-normalizer'
import { format as formatUrl, parse as parseUrl } from 'url'
import { formatHostname } from './lib/format-hostname'
import { getRedirectStatus } from '../lib/redirect-status'
import { isEdgeRuntime } from '../lib/is-edge-runtime'
import {
APP_PATHS_MANIFEST,
NEXT_BUILTIN_DOCUMENT,
PAGES_MANIFEST,
STATIC_STATUS_PAGES,
} from '../shared/lib/constants'
import { RedirectStatusCode } from '../client/components/redirect-status-code'
import { isDynamicRoute } from '../shared/lib/router/utils'
import { checkIsOnDemandRevalidate } from './api-utils'
import { setConfig } from '../shared/lib/runtime-config.external'
import { formatRevalidate, type Revalidate } from './lib/revalidate'
import { execOnce } from '../shared/lib/utils'
import { isBlockedPage } from './utils'
import { isBot } from '../shared/lib/router/utils/is-bot'
import RenderResult from './render-result'
import { removeTrailingSlash } from '../shared/lib/router/utils/remove-trailing-slash'
import { denormalizePagePath } from '../shared/lib/page-path/denormalize-page-path'
import * as Log from '../build/output/log'
import escapePathDelimiters from '../shared/lib/router/utils/escape-path-delimiters'
import { getUtils } from './server-utils'
import isError, { getProperError } from '../lib/is-error'
import {
addRequestMeta,
getRequestMeta,
removeRequestMeta,
setRequestMeta,
} from './request-meta'
import { removePathPrefix } from '../shared/lib/router/utils/remove-path-prefix'
import { normalizeAppPath } from '../shared/lib/router/utils/app-paths'
import { getHostname } from '../shared/lib/get-hostname'
import { parseUrl as parseUrlUtil } from '../shared/lib/router/utils/parse-url'
import { getNextPathnameInfo } from '../shared/lib/router/utils/get-next-pathname-info'
import {
RSC_HEADER,
NEXT_RSC_UNION_QUERY,
NEXT_ROUTER_PREFETCH_HEADER,
NEXT_DID_POSTPONE_HEADER,
NEXT_URL,
NEXT_ROUTER_STATE_TREE,
} from '../client/components/app-router-headers'
import type {
MatchOptions,
RouteMatcherManager,
} from './future/route-matcher-managers/route-matcher-manager'
import { LocaleRouteNormalizer } from './future/normalizers/locale-route-normalizer'
import { DefaultRouteMatcherManager } from './future/route-matcher-managers/default-route-matcher-manager'
import { AppPageRouteMatcherProvider } from './future/route-matcher-providers/app-page-route-matcher-provider'
import { AppRouteRouteMatcherProvider } from './future/route-matcher-providers/app-route-route-matcher-provider'
import { PagesAPIRouteMatcherProvider } from './future/route-matcher-providers/pages-api-route-matcher-provider'
import { PagesRouteMatcherProvider } from './future/route-matcher-providers/pages-route-matcher-provider'
import { ServerManifestLoader } from './future/route-matcher-providers/helpers/manifest-loaders/server-manifest-loader'
import { getTracer, SpanKind } from './lib/trace/tracer'
import { BaseServerSpan } from './lib/trace/constants'
import { I18NProvider } from './future/helpers/i18n-provider'
import { sendResponse } from './send-response'
import { handleInternalServerErrorResponse } from './future/route-modules/helpers/response-handlers'
import {
fromNodeOutgoingHttpHeaders,
toNodeOutgoingHttpHeaders,
} from './web/utils'
import {
CACHE_ONE_YEAR,
NEXT_CACHE_TAGS_HEADER,
NEXT_QUERY_PARAM_PREFIX,
} from '../lib/constants'
import { normalizeLocalePath } from '../shared/lib/i18n/normalize-locale-path'
import {
NextRequestAdapter,
signalFromNodeResponse,
} from './web/spec-extension/adapters/next-request'
import { matchNextDataPathname } from './lib/match-next-data-pathname'
import getRouteFromAssetPath from '../shared/lib/router/utils/get-route-from-asset-path'
import { stripInternalHeaders } from './internal-utils'
import { RSCPathnameNormalizer } from './future/normalizers/request/rsc'
import { PostponedPathnameNormalizer } from './future/normalizers/request/postponed'
import { stripFlightHeaders } from './app-render/strip-flight-headers'
import {
isAppPageRouteModule,
isAppRouteRouteModule,
isPagesRouteModule,
} from './future/route-modules/checks'
import { PrefetchRSCPathnameNormalizer } from './future/normalizers/request/prefetch-rsc'
import { NextDataPathnameNormalizer } from './future/normalizers/request/next-data'
import { getIsServerAction } from './lib/server-action-request-meta'
import { isInterceptionRouteAppPath } from './future/helpers/interception-routes'
export type FindComponentsResult = {
components: LoadComponentsReturnType
query: NextParsedUrlQuery
}
export interface MiddlewareRoutingItem {
page: string
match: MiddlewareRouteMatch
matchers?: MiddlewareMatcher[]
}
export type RouteHandler = (
req: BaseNextRequest,
res: BaseNextResponse,
parsedUrl: NextUrlWithParsedQuery
) => PromiseLike<boolean> | boolean
/**
* The normalized route manifest is the same as the route manifest, but with
* the rewrites normalized to the object shape that the router expects.
*/
export type NormalizedRouteManifest = {
readonly dynamicRoutes: ReadonlyArray<ManifestRoute>
readonly rewrites: {
readonly beforeFiles: ReadonlyArray<ManifestRewriteRoute>
readonly afterFiles: ReadonlyArray<ManifestRewriteRoute>
readonly fallback: ReadonlyArray<ManifestRewriteRoute>
}
}
export interface Options {
/**
* Object containing the configuration next.config.js
*/
conf: NextConfig
/**
* Set to false when the server was created by Next.js
*/
customServer?: boolean
/**
* Tells if Next.js is running in dev mode
*/
dev?: boolean
/**
* Enables the experimental testing mode.
*/
experimentalTestProxy?: boolean
/**
* Whether or not the dev server is running in experimental HTTPS mode
*/
experimentalHttpsServer?: boolean
/**
* Where the Next project is located
*/
dir?: string
/**
* Tells if Next.js is at the platform-level
*/
minimalMode?: boolean
/**
* Hide error messages containing server information
*/
quiet?: boolean
/**
* The hostname the server is running behind
*/
hostname?: string
/**
* The port the server is running behind
*/
port?: number
/**
* The HTTP Server that Next.js is running behind
*/
httpServer?: HTTPServer
isNodeDebugging?: 'brk' | boolean
}
export type RenderOpts = PagesRenderOptsPartial & AppRenderOptsPartial
export type LoadedRenderOpts = RenderOpts & LoadComponentsReturnType
type BaseRenderOpts = RenderOpts & {
poweredByHeader: boolean
generateEtags: boolean
previewProps: __ApiPreviewProps
}
export interface BaseRequestHandler {
(
req: BaseNextRequest,
res: BaseNextResponse,
parsedUrl?: NextUrlWithParsedQuery | undefined
): Promise<void> | void
}
export type RequestContext = {
req: BaseNextRequest
res: BaseNextResponse
pathname: string
query: NextParsedUrlQuery
renderOpts: RenderOpts
}
export type FallbackMode = false | undefined | 'blocking' | 'static'
export class NoFallbackError extends Error {}
// Internal wrapper around build errors at development
// time, to prevent us from propagating or logging them
export class WrappedBuildError extends Error {
innerError: Error
constructor(innerError: Error) {
super()
this.innerError = innerError
}
}
type ResponsePayload = {
type: 'html' | 'json' | 'rsc'
body: RenderResult
revalidate?: Revalidate
}
export type NextEnabledDirectories = {
readonly pages: boolean
readonly app: boolean
}
export default abstract class Server<ServerOptions extends Options = Options> {
public readonly hostname?: string
public readonly fetchHostname?: string
public readonly port?: number
protected readonly dir: string
protected readonly quiet: boolean
protected readonly nextConfig: NextConfigComplete
protected readonly distDir: string
protected readonly publicDir: string
protected readonly hasStaticDir: boolean
protected readonly pagesManifest?: PagesManifest
protected readonly appPathsManifest?: PagesManifest
protected readonly buildId: string
protected readonly minimalMode: boolean
protected readonly renderOpts: BaseRenderOpts
protected readonly serverOptions: Readonly<ServerOptions>
protected readonly appPathRoutes?: Record<string, string[]>
protected readonly clientReferenceManifest?: ClientReferenceManifest
protected interceptionRoutePatterns: RegExp[]
protected nextFontManifest?: NextFontManifest
private readonly responseCache: ResponseCacheBase
protected abstract getPublicDir(): string
protected abstract getHasStaticDir(): boolean
protected abstract getPagesManifest(): PagesManifest | undefined
protected abstract getAppPathsManifest(): PagesManifest | undefined
protected abstract getBuildId(): string
protected abstract getinterceptionRoutePatterns(): RegExp[]
protected readonly enabledDirectories: NextEnabledDirectories
protected abstract getEnabledDirectories(dev: boolean): NextEnabledDirectories
protected abstract findPageComponents(params: {
page: string
query: NextParsedUrlQuery
params: Params
isAppPath: boolean
// The following parameters are used in the development server's
// implementation.
sriEnabled?: boolean
appPaths?: ReadonlyArray<string> | null
shouldEnsure?: boolean
url?: string
}): Promise<FindComponentsResult | null>
protected abstract getFontManifest(): FontManifest | undefined
protected abstract getPrerenderManifest(): PrerenderManifest
protected abstract getNextFontManifest(): NextFontManifest | undefined
protected abstract attachRequestMeta(
req: BaseNextRequest,
parsedUrl: NextUrlWithParsedQuery
): void
protected abstract getFallback(page: string): Promise<string>
protected abstract hasPage(pathname: string): Promise<boolean>
protected abstract sendRenderResult(
req: BaseNextRequest,
res: BaseNextResponse,
options: {
result: RenderResult
type: 'html' | 'json' | 'rsc'
generateEtags: boolean
poweredByHeader: boolean
revalidate?: Revalidate
}
): Promise<void>
protected abstract runApi(
req: BaseNextRequest,
res: BaseNextResponse,
query: ParsedUrlQuery,
match: PagesAPIRouteMatch
): Promise<boolean>
protected abstract renderHTML(
req: BaseNextRequest,
res: BaseNextResponse,
pathname: string,
query: NextParsedUrlQuery,
renderOpts: LoadedRenderOpts
): Promise<RenderResult>
protected abstract getPrefetchRsc(pathname: string): Promise<string | null>
protected abstract getIncrementalCache(options: {
requestHeaders: Record<string, undefined | string | string[]>
requestProtocol: 'http' | 'https'
}): Promise<import('./lib/incremental-cache').IncrementalCache>
protected abstract getResponseCache(options: {
dev: boolean
}): ResponseCacheBase
protected abstract loadEnvConfig(params: {
dev: boolean
forceReload?: boolean
}): void
// TODO-APP: (wyattjoh): Make protected again. Used for turbopack in route-resolver.ts right now.
public readonly matchers: RouteMatcherManager
protected readonly i18nProvider?: I18NProvider
protected readonly localeNormalizer?: LocaleRouteNormalizer
protected readonly normalizers: {
readonly postponed: PostponedPathnameNormalizer | undefined
readonly rsc: RSCPathnameNormalizer | undefined
readonly prefetchRSC: PrefetchRSCPathnameNormalizer | undefined
readonly data: NextDataPathnameNormalizer | undefined
}
public constructor(options: ServerOptions) {
const {
dir = '.',
quiet = false,
conf,
dev = false,
minimalMode = false,
customServer = true,
hostname,
port,
} = options
this.serverOptions = options
this.dir =
process.env.NEXT_RUNTIME === 'edge' ? dir : require('path').resolve(dir)
this.quiet = quiet
this.loadEnvConfig({ dev })
// TODO: should conf be normalized to prevent missing
// values from causing issues as this can be user provided
this.nextConfig = conf as NextConfigComplete
this.hostname = hostname
if (this.hostname) {
// we format the hostname so that it can be fetched
this.fetchHostname = formatHostname(this.hostname)
}
this.port = port
this.distDir =
process.env.NEXT_RUNTIME === 'edge'
? this.nextConfig.distDir
: require('path').join(this.dir, this.nextConfig.distDir)
this.publicDir = this.getPublicDir()
this.hasStaticDir = !minimalMode && this.getHasStaticDir()
this.i18nProvider = this.nextConfig.i18n?.locales
? new I18NProvider(this.nextConfig.i18n)
: undefined
// Configure the locale normalizer, it's used for routes inside `pages/`.
this.localeNormalizer = this.i18nProvider
? new LocaleRouteNormalizer(this.i18nProvider)
: undefined
// Only serverRuntimeConfig needs the default
// publicRuntimeConfig gets it's default in client/index.js
const {
serverRuntimeConfig = {},
publicRuntimeConfig,
assetPrefix,
generateEtags,
} = this.nextConfig
this.buildId = this.getBuildId()
// this is a hack to avoid Webpack knowing this is equal to this.minimalMode
// because we replace this.minimalMode to true in production bundles.
const minimalModeKey = 'minimalMode'
this[minimalModeKey] =
minimalMode || !!process.env.NEXT_PRIVATE_MINIMAL_MODE
this.enabledDirectories = this.getEnabledDirectories(dev)
this.normalizers = {
// We should normalize the pathname from the RSC prefix only in minimal
// mode as otherwise that route is not exposed external to the server as
// we instead only rely on the headers.
postponed:
this.enabledDirectories.app &&
this.nextConfig.experimental.ppr &&
this.minimalMode
? new PostponedPathnameNormalizer()
: undefined,
rsc:
this.enabledDirectories.app && this.minimalMode
? new RSCPathnameNormalizer()
: undefined,
prefetchRSC:
this.enabledDirectories.app &&
this.nextConfig.experimental.ppr &&
this.minimalMode
? new PrefetchRSCPathnameNormalizer()
: undefined,
data: this.enabledDirectories.pages
? new NextDataPathnameNormalizer(this.buildId)
: undefined,
}
this.nextFontManifest = this.getNextFontManifest()
if (process.env.NEXT_RUNTIME !== 'edge') {
process.env.NEXT_DEPLOYMENT_ID =
this.nextConfig.experimental.deploymentId || ''
}
this.renderOpts = {
supportsDynamicHTML: true,
trailingSlash: this.nextConfig.trailingSlash,
deploymentId: this.nextConfig.experimental.deploymentId,
strictNextHead: !!this.nextConfig.experimental.strictNextHead,
poweredByHeader: this.nextConfig.poweredByHeader,
canonicalBase: this.nextConfig.amp.canonicalBase || '',
buildId: this.buildId,
generateEtags,
previewProps: this.getPrerenderManifest().preview,
customServer: customServer === true ? true : undefined,
ampOptimizerConfig: this.nextConfig.experimental.amp?.optimizer,
basePath: this.nextConfig.basePath,
images: this.nextConfig.images,
optimizeFonts: this.nextConfig.optimizeFonts as FontConfig,
fontManifest:
(this.nextConfig.optimizeFonts as FontConfig) && !dev
? this.getFontManifest()
: undefined,
optimizeCss: this.nextConfig.experimental.optimizeCss,
nextConfigOutput: this.nextConfig.output,
nextScriptWorkers: this.nextConfig.experimental.nextScriptWorkers,
disableOptimizedLoading:
this.nextConfig.experimental.disableOptimizedLoading,
domainLocales: this.nextConfig.i18n?.domains,
distDir: this.distDir,
serverComponents: this.enabledDirectories.app,
enableTainting: this.nextConfig.experimental.taint,
crossOrigin: this.nextConfig.crossOrigin
? this.nextConfig.crossOrigin
: undefined,
largePageDataBytes: this.nextConfig.experimental.largePageDataBytes,
// Only the `publicRuntimeConfig` key is exposed to the client side
// It'll be rendered as part of __NEXT_DATA__ on the client side
runtimeConfig:
Object.keys(publicRuntimeConfig).length > 0
? publicRuntimeConfig
: undefined,
// @ts-expect-error internal field not publicly exposed
isExperimentalCompile: this.nextConfig.experimental.isExperimentalCompile,
experimental: {
ppr:
this.enabledDirectories.app &&
this.nextConfig.experimental.ppr === true,
missingSuspenseWithCSRBailout:
this.nextConfig.experimental.missingSuspenseWithCSRBailout === true,
},
}
// Initialize next/config with the environment configuration
setConfig({
serverRuntimeConfig,
publicRuntimeConfig,
})
this.pagesManifest = this.getPagesManifest()
this.appPathsManifest = this.getAppPathsManifest()
this.appPathRoutes = this.getAppPathRoutes()
this.interceptionRoutePatterns = this.getinterceptionRoutePatterns()
// Configure the routes.
this.matchers = this.getRouteMatchers()
// Start route compilation. We don't wait for the routes to finish loading
// because we use the `waitTillReady` promise below in `handleRequest` to
// wait. Also we can't `await` in the constructor.
void this.matchers.reload()
this.setAssetPrefix(assetPrefix)
this.responseCache = this.getResponseCache({ dev })
}
protected reloadMatchers() {
return this.matchers.reload()
}
private handleRSCRequest: RouteHandler = (req, _res, parsedUrl) => {
if (!parsedUrl.pathname) return false
if (this.normalizers.prefetchRSC?.match(parsedUrl.pathname)) {
parsedUrl.pathname = this.normalizers.prefetchRSC.normalize(
parsedUrl.pathname,
true
)
// Mark the request as a router prefetch request.
req.headers[RSC_HEADER.toLowerCase()] = '1'
req.headers[NEXT_ROUTER_PREFETCH_HEADER.toLowerCase()] = '1'
addRequestMeta(req, 'isRSCRequest', true)
addRequestMeta(req, 'isPrefetchRSCRequest', true)
} else if (this.normalizers.rsc?.match(parsedUrl.pathname)) {
parsedUrl.pathname = this.normalizers.rsc.normalize(
parsedUrl.pathname,
true
)
// Mark the request as a RSC request.
req.headers[RSC_HEADER.toLowerCase()] = '1'
addRequestMeta(req, 'isRSCRequest', true)
} else if (req.headers['x-now-route-matches']) {
// If we didn't match, return with the flight headers stripped. If in
// minimal mode we didn't match based on the path, this can't be a RSC
// request. This is because Vercel only sends this header during
// revalidation requests and we want the cache to instead depend on the
// request path for flight information.
stripFlightHeaders(req.headers)
return false
} else {
// Otherwise just return without doing anything.
return false
}
// If we're here, this is a data request, as it didn't return and it matched
// either a RSC or a prefetch RSC request.
parsedUrl.query.__nextDataReq = '1'
if (req.url) {
const parsed = parseUrl(req.url)
parsed.pathname = parsedUrl.pathname
req.url = formatUrl(parsed)
}
return false
}
private handleNextDataRequest: RouteHandler = async (req, res, parsedUrl) => {
const middleware = this.getMiddleware()
const params = matchNextDataPathname(parsedUrl.pathname)
// ignore for non-next data URLs
if (!params || !params.path) {
return false
}
if (params.path[0] !== this.buildId) {
// Ignore if its a middleware request when we aren't on edge.
if (
process.env.NEXT_RUNTIME !== 'edge' &&
req.headers['x-middleware-invoke']
) {
return false
}
// Make sure to 404 if the buildId isn't correct
await this.render404(req, res, parsedUrl)
return true
}
// remove buildId from URL
params.path.shift()
const lastParam = params.path[params.path.length - 1]
// show 404 if it doesn't end with .json
if (typeof lastParam !== 'string' || !lastParam.endsWith('.json')) {
await this.render404(req, res, parsedUrl)
return true
}
// re-create page's pathname
let pathname = `/${params.path.join('/')}`
pathname = getRouteFromAssetPath(pathname, '.json')
// ensure trailing slash is normalized per config
if (middleware) {
if (this.nextConfig.trailingSlash && !pathname.endsWith('/')) {
pathname += '/'
}
if (
!this.nextConfig.trailingSlash &&
pathname.length > 1 &&
pathname.endsWith('/')
) {
pathname = pathname.substring(0, pathname.length - 1)
}
}
if (this.i18nProvider) {
// Remove the port from the hostname if present.
const hostname = req?.headers.host?.split(':', 1)[0].toLowerCase()
const domainLocale = this.i18nProvider.detectDomainLocale(hostname)
const defaultLocale =
domainLocale?.defaultLocale ?? this.i18nProvider.config.defaultLocale
const localePathResult = this.i18nProvider.analyze(pathname)
// If the locale is detected from the path, we need to remove it
// from the pathname.
if (localePathResult.detectedLocale) {
pathname = localePathResult.pathname
}
// Update the query with the detected locale and default locale.
parsedUrl.query.__nextLocale = localePathResult.detectedLocale
parsedUrl.query.__nextDefaultLocale = defaultLocale
// If the locale is not detected from the path, we need to mark that
// it was not inferred from default.
if (!localePathResult.detectedLocale) {
delete parsedUrl.query.__nextInferredLocaleFromDefault
}
// If no locale was detected and we don't have middleware, we need
// to render a 404 page.
if (!localePathResult.detectedLocale && !middleware) {
parsedUrl.query.__nextLocale = defaultLocale
await this.render404(req, res, parsedUrl)
return true
}
}
parsedUrl.pathname = pathname
parsedUrl.query.__nextDataReq = '1'
return false
}
protected handleNextImageRequest: RouteHandler = () => false
protected handleCatchallRenderRequest: RouteHandler = () => false
protected handleCatchallMiddlewareRequest: RouteHandler = () => false
protected getRouteMatchers(): RouteMatcherManager {
// Create a new manifest loader that get's the manifests from the server.
const manifestLoader = new ServerManifestLoader((name) => {
switch (name) {
case PAGES_MANIFEST:
return this.getPagesManifest() ?? null
case APP_PATHS_MANIFEST:
return this.getAppPathsManifest() ?? null
default:
return null
}
})
// Configure the matchers and handlers.
const matchers: RouteMatcherManager = new DefaultRouteMatcherManager()
// Match pages under `pages/`.
matchers.push(
new PagesRouteMatcherProvider(
this.distDir,
manifestLoader,
this.i18nProvider
)
)
// Match api routes under `pages/api/`.
matchers.push(
new PagesAPIRouteMatcherProvider(
this.distDir,
manifestLoader,
this.i18nProvider
)
)
// If the app directory is enabled, then add the app matchers and handlers.
if (this.enabledDirectories.app) {
// Match app pages under `app/`.
matchers.push(
new AppPageRouteMatcherProvider(this.distDir, manifestLoader)
)
matchers.push(
new AppRouteRouteMatcherProvider(this.distDir, manifestLoader)
)
}
return matchers
}
public logError(err: Error): void {
if (this.quiet) return
Log.error(err)
}
public async handleRequest(
req: BaseNextRequest,
res: BaseNextResponse,
parsedUrl?: NextUrlWithParsedQuery
): Promise<void> {
await this.prepare()
const method = req.method.toUpperCase()
const tracer = getTracer()
return tracer.withPropagatedContext(req.headers, () => {
return tracer.trace(
BaseServerSpan.handleRequest,
{
spanName: `${method} ${req.url}`,
kind: SpanKind.SERVER,
attributes: {
'http.method': method,
'http.target': req.url,
},
},
async (span) =>
this.handleRequestImpl(req, res, parsedUrl).finally(() => {
if (!span) return
span.setAttributes({
'http.status_code': res.statusCode,
})
const rootSpanAttributes = tracer.getRootSpanAttributes()
// We were unable to get attributes, probably OTEL is not enabled
if (!rootSpanAttributes) return
if (
rootSpanAttributes.get('next.span_type') !==
BaseServerSpan.handleRequest
) {
console.warn(
`Unexpected root span type '${rootSpanAttributes.get(
'next.span_type'
)}'. Please report this Next.js issue https://github.com/vercel/next.js`
)
return
}
const route = rootSpanAttributes.get('next.route')
if (route) {
const newName = `${method} ${route}`
span.setAttributes({
'next.route': route,
'http.route': route,
'next.span_name': newName,
})
span.updateName(newName)
}
})
)
})
}
private async handleRequestImpl(
req: BaseNextRequest,
res: BaseNextResponse,
parsedUrl?: NextUrlWithParsedQuery
): Promise<void> {
try {
// Wait for the matchers to be ready.
await this.matchers.waitTillReady()
// ensure cookies set in middleware are merged and
// not overridden by API routes/getServerSideProps
const _res = (res as any).originalResponse || res
const origSetHeader = _res.setHeader.bind(_res)
_res.setHeader = (name: string, val: string | string[]) => {
// When renders /_error after page is failed,
// it could attempt to set headers after headers
if (_res.headersSent) {
return
}
if (name.toLowerCase() === 'set-cookie') {
const middlewareValue = getRequestMeta(req, 'middlewareCookie')
if (
!middlewareValue ||
!Array.isArray(val) ||
!val.every((item, idx) => item === middlewareValue[idx])
) {
val = [
// TODO: (wyattjoh) find out why this is called multiple times resulting in duplicate cookies being added
...new Set([
...(middlewareValue || []),
...(typeof val === 'string'
? [val]
: Array.isArray(val)
? val
: []),
]),
]
}
}
return origSetHeader(name, val)
}
const urlParts = (req.url || '').split('?', 1)
const urlNoQuery = urlParts[0]
// this normalizes repeated slashes in the path e.g. hello//world ->
// hello/world or backslashes to forward slashes, this does not
// handle trailing slash as that is handled the same as a next.config.js
// redirect
if (urlNoQuery?.match(/(\\|\/\/)/)) {
const cleanUrl = normalizeRepeatedSlashes(req.url!)
res.redirect(cleanUrl, 308).body(cleanUrl).send()
return
}
// Parse url if parsedUrl not provided
if (!parsedUrl || typeof parsedUrl !== 'object') {
if (!req.url) {
throw new Error('Invariant: url can not be undefined')
}
parsedUrl = parseUrl(req.url!, true)
}
if (!parsedUrl.pathname) {
throw new Error("Invariant: pathname can't be empty")
}
// Parse the querystring ourselves if the user doesn't handle querystring parsing
if (typeof parsedUrl.query === 'string') {
parsedUrl.query = Object.fromEntries(
new URLSearchParams(parsedUrl.query)
)
}
req.headers['x-forwarded-host'] ??= req.headers['host'] ?? this.hostname
req.headers['x-forwarded-port'] ??= this.port?.toString()
const { originalRequest } = req as NodeNextRequest
req.headers['x-forwarded-proto'] ??= (originalRequest.socket as TLSSocket)
?.encrypted
? 'https'
: 'http'
req.headers['x-forwarded-for'] ??= originalRequest.socket?.remoteAddress
// This should be done before any normalization of the pathname happens as
// it captures the initial URL.
this.attachRequestMeta(req, parsedUrl)
let finished: boolean = false
if (this.minimalMode && this.enabledDirectories.app) {
finished = await this.handleRSCRequest(req, res, parsedUrl)
if (finished) return
}
const domainLocale = this.i18nProvider?.detectDomainLocale(
getHostname(parsedUrl, req.headers)
)
const defaultLocale =
domainLocale?.defaultLocale || this.nextConfig.i18n?.defaultLocale
parsedUrl.query.__nextDefaultLocale = defaultLocale
const url = parseUrlUtil(req.url.replace(/^\/+/, '/'))
const pathnameInfo = getNextPathnameInfo(url.pathname, {
nextConfig: this.nextConfig,
i18nProvider: this.i18nProvider,
})
url.pathname = pathnameInfo.pathname
if (pathnameInfo.basePath) {
req.url = removePathPrefix(req.url!, this.nextConfig.basePath)
}
const useMatchedPathHeader =
this.minimalMode && typeof req.headers['x-matched-path'] === 'string'
// TODO: merge handling with x-invoke-path
if (useMatchedPathHeader) {
try {
if (this.enabledDirectories.app) {
// ensure /index path is normalized for prerender
// in minimal mode
if (req.url.match(/^\/index($|\?)/)) {
req.url = req.url.replace(/^\/index/, '/')
}
parsedUrl.pathname =
parsedUrl.pathname === '/index' ? '/' : parsedUrl.pathname
}
// x-matched-path is the source of truth, it tells what page
// should be rendered because we don't process rewrites in minimalMode
let { pathname: matchedPath } = new URL(
req.headers['x-matched-path'] as string,
'http:https://localhost'
)
const { pathname: urlPathname } = new URL(req.url, 'http:https://localhost')
// For ISR the URL is normalized to the prerenderPath so if
// it's a data request the URL path will be the data URL,
// basePath is already stripped by this point
if (this.normalizers.data?.match(urlPathname)) {
parsedUrl.query.__nextDataReq = '1'
}
// In minimal mode, if PPR is enabled, then we should check to see if
// the matched path is a postponed path, and if it is, handle it.
else if (
this.normalizers.postponed?.match(matchedPath) &&
req.method === 'POST'
) {
// Decode the postponed state from the request body, it will come as
// an array of buffers, so collect them and then concat them to form
// the string.
const body: Array<Buffer> = []
for await (const chunk of req.body) {
body.push(chunk)
}
const postponed = Buffer.concat(body).toString('utf8')
addRequestMeta(req, 'postponed', postponed)
}
matchedPath = this.normalize(matchedPath)
const normalizedUrlPath = this.stripNextDataPath(urlPathname)
// Perform locale detection and normalization.
const localeAnalysisResult = this.i18nProvider?.analyze(matchedPath, {
defaultLocale,
})
// The locale result will be defined even if the locale was not
// detected for the request because it will be inferred from the
// default locale.
if (localeAnalysisResult) {
parsedUrl.query.__nextLocale = localeAnalysisResult.detectedLocale
// If the detected locale was inferred from the default locale, we
// need to modify the metadata on the request to indicate that.
if (localeAnalysisResult.inferredFromDefault) {
parsedUrl.query.__nextInferredLocaleFromDefault = '1'
} else {
delete parsedUrl.query.__nextInferredLocaleFromDefault
}
}
// TODO: check if this is needed any more?
matchedPath = denormalizePagePath(matchedPath)
let srcPathname = matchedPath
let pageIsDynamic = isDynamicRoute(srcPathname)
if (!pageIsDynamic) {
const match = await this.matchers.match(srcPathname, {
i18n: localeAnalysisResult,
})
// Update the source pathname to the matched page's pathname.