dtl: Use Basic Auth in L1TransportServer (#2439)

.changeset/popular-birds-whisper.md

+---
+'@eth-optimism/data-transport-layer': patch
+---
+
+Use Basic Authentication in L1TransportServer

packages/data-transport-layer/src/services/server/service.ts

@@ -93,12 +93,22 @@ export class L1TransportServer extends BaseService<L1TransportServerOptions> {
 
     this.state.l1RpcProvider =
       typeof this.options.l1RpcProvider === 'string'
-        ? new JsonRpcProvider(this.options.l1RpcProvider)
+        ? new JsonRpcProvider({
+            url: this.options.l1RpcProvider,
+            user: this.options.l1RpcProviderUser,
+            password: this.options.l1RpcProviderPassword,
+            headers: { 'User-Agent': 'data-transport-layer' },
+          })
         : this.options.l1RpcProvider
 
     this.state.l2RpcProvider =
       typeof this.options.l2RpcProvider === 'string'
-        ? new JsonRpcProvider(this.options.l2RpcProvider)
+        ? new JsonRpcProvider({
+            url: this.options.l2RpcProvider,
+            user: this.options.l2RpcProviderUser,
+            password: this.options.l2RpcProviderPassword,
+            headers: { 'User-Agent': 'data-transport-layer' },
+          })
         : this.options.l2RpcProvider
 
     this._initializeApp()