fix(oauth): set httpOptions before issuer discovery (#3537)

* Update client.ts

Set custom.setHttpOptionsDefaults before Issuer.discover(.wellKnown). This allow discover the .wellKnown endpoint behind a proxy

* chore: address code review

Co-authored-by: Balázs Orbán <[email protected]>

Author: yfridelance

src/core/lib/oauth/client.ts

@@ -12,7 +12,9 @@ export async function openidClient(
   options: InternalOptions<"oauth">
 ): Promise<Client> {
   const provider = options.provider
-
+  
+  if (provider.httpOptions) custom.setHttpOptionsDefaults(provider.httpOptions)
+  
   let issuer: Issuer
   if (provider.wellKnown) {
     issuer = await Issuer.discover(provider.wellKnown)
@@ -44,7 +46,5 @@ export async function openidClient(
   // and https://github.com/nextauthjs/next-auth/issues/3067
   client[custom.clock_tolerance] = 10
 
-  if (provider.httpOptions) custom.setHttpOptionsDefaults(provider.httpOptions)
-
   return client
 }