Rename flight parameters to rsc/next

packages/next/client/components/app-router.client.tsx

@@ -44,18 +44,18 @@ export async function fetchServerResponse(
   prefetch?: true
 ): Promise<[FlightData: FlightData, canonicalUrlOverride: URL | undefined]> {
   const headers: {
-    __flight__: '1'
-    __flight_router_state_tree__: string
-    __flight_prefetch__?: '1'
+    __rsc__: '1'
+    __next_router_state_tree__: string
+    __next_router_prefetch__?: '1'
   } = {
     // Enable flight response
-    __flight__: '1',
+    __rsc__: '1',
     // Provide the current router state
-    __flight_router_state_tree__: JSON.stringify(flightRouterState),
+    __next_router_state_tree__: JSON.stringify(flightRouterState),
   }
   if (prefetch) {
     // Enable prefetch response
-    headers.__flight_prefetch__ = '1'
+    headers.__next_router_prefetch__ = '1'
   }
 
   const res = await fetch(url.toString(), {

packages/next/server/app-render.tsx

@@ -579,9 +579,9 @@ function getScriptNonceFromHeader(cspHeaderValue: string): string | undefined {
 }
 
 const FLIGHT_PARAMETERS = [
-  '__flight__',
-  '__flight_router_state_tree__',
-  '__flight_prefetch__',
+  '__rsc__',
+  '__next_router_state_tree__',
+  '__next_router_prefetch__',
 ] as const
 
 function headersWithoutFlight(headers: IncomingHttpHeaders) {
@@ -650,8 +650,8 @@ export async function renderToHTMLOrFlight(
     // don't modify original query object
     query = Object.assign({}, query)
 
-    const isFlight = req.headers.__flight__ !== undefined
-    const isPrefetch = req.headers.__flight_prefetch__ !== undefined
+    const isFlight = req.headers.__rsc__ !== undefined
+    const isPrefetch = req.headers.__next_router_prefetch__ !== undefined
 
     // Handle client-side navigation to pages directory
     if (isFlight && isPagesDir) {
@@ -685,8 +685,8 @@ export async function renderToHTMLOrFlight(
      * Router state provided from the client-side router. Used to handle rendering from the common layout down.
      */
     const providedFlightRouterState: FlightRouterState = isFlight
-      ? req.headers.__flight_router_state_tree__
-        ? JSON.parse(req.headers.__flight_router_state_tree__ as string)
+      ? req.headers.__next_router_state_tree__
+        ? JSON.parse(req.headers.__next_router_state_tree__ as string)
         : {}
       : undefined
 

packages/next/server/base-server.ts

@@ -1028,9 +1028,9 @@ export default abstract class Server<ServerOptions extends Options = Options> {
       )
     }
 
-    // Don't delete query.__flight__ yet, it still needs to be used in renderToHTML later
+    // Don't delete query.__rsc__ yet, it still needs to be used in renderToHTML later
     const isFlightRequest = Boolean(
-      this.serverComponentManifest && req.headers.__flight__
+      this.serverComponentManifest && req.headers.__rsc__
     )
 
     // we need to ensure the status code if /404 is visited directly

packages/next/server/internal-utils.ts

@@ -6,10 +6,10 @@ const INTERNAL_QUERY_NAMES = [
   '__nextDefaultLocale',
   '__nextIsNotFound',
   // RSC
-  '__flight__',
+  '__rsc__',
   // Routing
-  '__flight_router_state_tree__',
-  '__flight_prefetch__',
+  '__next_router_state_tree__',
+  '__next_router_prefetch__',
 ] as const
 
 const EXTENDED_INTERNAL_QUERY_NAMES = ['__nextDataReq'] as const

packages/next/server/next-server.ts

@@ -828,7 +828,7 @@ export default class NextNodeServer extends BaseServer {
 
     if (
       this.nextConfig.experimental.appDir &&
-      (renderOpts.isAppPath || req.headers.__flight__)
+      (renderOpts.isAppPath || req.headers.__rsc__)
     ) {
       const isPagesDir = !renderOpts.isAppPath
       return appRenderToHTMLOrFlight(

packages/next/server/web/adapter.ts

@@ -36,9 +36,9 @@ class NextRequestHint extends NextRequest {
 }
 
 const FLIGHT_PARAMETERS = [
-  '__flight__',
-  '__flight_router_state_tree__',
-  '__flight_prefetch__',
+  '__rsc__',
+  '__next_router_state_tree__',
+  '__next_router_prefetch__',
 ] as const
 
 export async function adapter(params: {

test/e2e/app-dir/app/middleware.js

@@ -19,7 +19,7 @@ export function middleware(request) {
       ? 'rewrite'
       : 'redirect'
 
-    const internal = ['__flight__', '__flight_router_state_tree__']
+    const internal = ['__rsc__', '__next_router_state_tree__']
     if (internal.some((name) => request.headers.has(name))) {
       return NextResponse[method](new URL('/internal/failure', request.url))
     }

test/e2e/app-dir/index.test.ts

@@ -42,7 +42,7 @@ describe('app dir', () => {
         {},
         {
           headers: {
-            __flight__: '1',
+            __rsc__: '1',
           },
         }
       )
@@ -56,7 +56,7 @@ describe('app dir', () => {
         {},
         {
           headers: {
-            __flight__: '1',
+            __rsc__: '1',
           },
         }
       )

test/e2e/app-dir/rsc-basic.test.ts

@@ -91,9 +91,9 @@ describe('app dir - react server components', () => {
       '__nextLocale',
       '__nextDefaultLocale',
       '__nextIsNotFound',
-      '__flight__',
-      '__flight_router_state_tree__',
-      '__flight_prefetch__',
+      '__rsc__',
+      '__next_router_state_tree__',
+      '__next_router_prefetch__',
     ]
 
     const hasNextInternalQuery = inlineFlightContents.some((content) =>
@@ -111,9 +111,9 @@ describe('app dir - react server components', () => {
           requestsCount++
           return request.allHeaders().then((headers) => {
             if (
-              headers.__flight__ === '1' &&
-              // Prefetches also include `__flight__`
-              headers.__flight_prefetch__ !== '1'
+              headers.__rsc__ === '1' &&
+              // Prefetches also include `__rsc__`
+              headers.__next_router_prefetch__ !== '1'
             ) {
               hasFlightRequest = true
             }
@@ -197,8 +197,8 @@ describe('app dir - react server components', () => {
         page.on('request', (request) => {
           return request.allHeaders().then((headers) => {
             if (
-              headers.__flight__ === '1' &&
-              headers.__flight_prefetch__ !== '1'
+              headers.__rsc__ === '1' &&
+              headers.__next_router_prefetch__ !== '1'
             ) {
               hasFlightRequest = true
             }
@@ -337,7 +337,7 @@ describe('app dir - react server components', () => {
       {},
       {
         headers: {
-          __flight__: '1',
+          __rsc__: '1',
         },
       }
     ).then(async (response) => {

test/e2e/switchable-runtime/index.test.ts

@@ -120,7 +120,7 @@ describe('Switchable runtime', () => {
           beforePageLoad(page) {
             page.on('request', (request) => {
               return request.allHeaders().then((headers) => {
-                if (headers.__flight__ === '1') {
+                if (headers.__rsc__ === '1') {
                   flightRequest = request.url()
                 }
               })
@@ -680,7 +680,7 @@ describe('Switchable runtime', () => {
           beforePageLoad(page) {
             page.on('request', (request) => {
               request.allHeaders().then((headers) => {
-                if (headers.__flight__ === '1') {
+                if (headers.__rsc__ === '1') {
                   flightRequest = request.url()
                 }
               })