Add 429 error response when fetching the eth proofs. (#14)

.env.example

@@ -1,9 +1,9 @@
-AVAIL_CLIENT_URL=https://couscous-devnet.avail.tools/api
+AVAIL_CLIENT_URL=https://rpc-hex-devnet.avail.tools/api
 SUCCINCT_URL=https://beaconapi.succinct.xyz/api/integrations/vectorx
-AVAIL_CHAIN_NAME=couscous
+AVAIL_CHAIN_NAME=hex
 CONTRACT_CHAIN_ID=11155111
-VECTORX_CONTRACT_ADDRESS=0xD528DdCd659D380DFDe96c8fa3e03BaAa03cb51A
-BRIDGE_CONTRACT_ADDRESS=0x75545225C83B985f3A517bF61f316266057bb13b
+VECTORX_CONTRACT_ADDRESS=0xbc281367e1F2dB1c3e92255AA2F040B1c642ec75
+BRIDGE_CONTRACT_ADDRESS=0x1369a4c9391cf90d393b40faead521b0f7019dc5
 ETHEREUM_CLIENT_URL=https://ethereum-sepolia.publicnode.com
 BEACONCHAIN_URL=https://sepolia.beaconcha.in/api/v1/slot
 HOST=0.0.0.0

src/main.rs

@@ -339,11 +339,19 @@ async fn get_avl_proof(
         ),
         Err(err) => {
             tracing::error!("❌ Cannot get account and storage proofs: {:?}", err);
-            (
-                StatusCode::INTERNAL_SERVER_ERROR,
-                [("Cache-Control", "max-age=300, must-revalidate")],
-                Json(json!({ "error": err.to_string()})),
-            )
+            if err.to_string().ends_with("status code: 429") {
+                (
+                    StatusCode::TOO_MANY_REQUESTS,
+                    [("Cache-Control", "max-age=300, must-revalidate")],
+                    Json(json!({ "error": err.to_string()})),
+                )
+            } else {
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    [("Cache-Control", "max-age=300, must-revalidate")],
+                    Json(json!({ "error": err.to_string()})),
+                )
+            }
         }
     }
 }