Expose requestTimeout similarly to keepAliveTimeout

[akteigland]

Goals

Allow Nodes requestTimeout to be set when calling next start

Non-Goals

No response

Background

Next now requires Node v18.17. In Node 18, requestTimeout is now defaulted to 300000 (5 minutes). This means that long lasting requests will now timeout after five minutes. For example, I am attempting to upload large files using route handlers, but the requests always fail after 300 seconds. There is currently no way to adjust this timeout without patching Next.

Proposal

This setting can be adjusted in next/dist/server/lib/start-server.js, similar to keepAliveTimeout. I believe we should be able to make very similar changes as was done in #35827 to support requestTimeout as well. I would be happy to contribute.

[akteigland]

I have temporarily patched Next using patch-package and the following patch file:

diff --git a/node_modules/next/dist/server/lib/start-server.js b/node_modules/next/dist/server/lib/start-server.js
index 8944a5b..c3d18e9 100644
--- a/node_modules/next/dist/server/lib/start-server.js
+++ b/node_modules/next/dist/server/lib/start-server.js
@@ -165,6 +165,9 @@ async function startServer(serverOptions) {
     if (keepAliveTimeout) {
         server.keepAliveTimeout = keepAliveTimeout;
     }
+    // Update requestTimeout to allow for long lasting requests (i.e. file uploads)
+    // https://github.com/vercel/next.js/discussions/71651
+    server.requestTimeout = 3600000; // 1 hour
     server.on("upgrade", async (req, socket, head)=>{
         try {
             await upgradeHandler(req, socket, head);