Check for account aliases

sponsoredTransactionsAuction/Dockerfile

@@ -1,22 +1,21 @@
 ARG node_base_image=node:18-slim
-ARG rust_base_image=rust:1.65
+ARG rust_base_image=rust:1.67
 
-FROM ${node_base_image} AS frontend
+FROM ${node_base_image} AS front_end
 
 WORKDIR /app
 COPY ./sponsoredTransactionsAuction/frontend/package.json ./package.json
 COPY ./sponsoredTransactionsAuction/frontend/tsconfig.node.json ./tsconfig.node.json
 COPY ./sponsoredTransactionsAuction/frontend/tsconfig.json ./tsconfig.json
 COPY ./sponsoredTransactionsAuction/frontend/vite.config.ts ./vite.config.ts
-COPY ./sponsoredTransactionsAuction/frontend/public ./public
 COPY ./sponsoredTransactionsAuction/frontend/src ./src
 COPY ./sponsoredTransactionsAuction/frontend/index.html ./index.html
 COPY ./sponsoredTransactionsAuction/frontend/generated ./generated
 
 RUN yarn
 RUN yarn build
 
-FROM ${rust_base_image} AS backend
+FROM ${rust_base_image} AS back_end
 
 WORKDIR /backend/app
 COPY ./deps/concordium-rust-sdk /deps/concordium-rust-sdk
@@ -27,7 +26,7 @@ RUN cargo build --release
 FROM ubuntu:22.04
 WORKDIR /build
 
-COPY --from=backend ./backend/app/target/release/sponsored-transaction-backend ./sponsored-transaction-backend
-COPY --from=frontend ./app/dist ./public
+COPY --from=back_end ./backend/app/target/release/sponsored-transaction-backend ./sponsored-transaction-backend
+COPY --from=front_end ./app/dist ./public
 
-CMD ./sponsored-transaction-backend --public-folder public
+CMD ./sponsored-transaction-backend --frontend public

sponsoredTransactionsAuction/README.md

@@ -34,7 +34,7 @@ docker run -p 8080:8080 --mount type=bind,source="$(pwd)"/<ACCOUNT_KEY_FILE>,tar
 e.g.
 
 ```shell
-docker run -p 8080:8080 --mount type=bind,source="$(pwd)"/4SizPU2ipqQQza9Xa6fUkQBCDjyd1vTNUNDGbBeiRGpaJQc6qX.export,target=/KEY,readonly -e ACCOUNT_KEY_FILE=/KEY -e PORT=8080 -e NODE=http://node.testnet.concordium.com:20000 -e LOG_LEVEL=info -e CIS2_TOKEN_CONTRACT_INDEX=7370 -e AUCTION_CONTRACT_INDEX=7415 sponsored_transactions
+docker run -p 8080:8080 --mount type=bind,source="$(pwd)"/4SizPU2ipqQQza9Xa6fUkQBCDjyd1vTNUNDGbBeiRGpaJQc6qX.export,target=/KEY,readonly -e ACCOUNT_KEY_FILE=/KEY -e PORT=8080 -e NODE=http://node.testnet.concordium.com:20000 -e LOG_LEVEL=debug -e CIS2_TOKEN_CONTRACT_INDEX=7370 -e AUCTION_CONTRACT_INDEX=7415 sponsored_transactions
 ```
 
 Note: To get your `ACCOUNT_KEY_FILE` (the `4SizPU2ipqQQza9Xa6fUkQBCDjyd1vTNUNDGbBeiRGpaJQc6qX.export` file), export it from the Concordium Browser Wallet for Web.

sponsoredTransactionsAuction/backend/README.md

@@ -6,27 +6,28 @@ This page describes the sponsored transactions backend for this dapp example.
 
 The following parameters are supported
 - `node` the URL of the node's GRPC V2 interface, e.g., `http://node.testnet.concordium.com:20000`
-- `port` the port on which the server will listen for incoming requests
-- `log-level` maximum log level (defaults to `debug` if not given)
-- `public-folder` the path to the folder, which should be served, defaults to the `public` folder in the current directory.
+- `port` the port on which the server will listen for incoming requests, e.g., 127.0.0.1:8080.
+- `log-level` maximum log level (defaults to `debug` if not given).
+- `frontend` the path to the folder, which should be served, defaults to the `public` folder in the current directory.
 - `account-key-file` the path to a file which contains the key credentials.
 - `cis2-token-smart-contract-index` the smart contract index which the sponsored transaction is submitted to.
 - `auction-smart-contract-index` the smart contract index of the auction smart contract.
+- `request-timeout` the request timeout (both of request to the node and server requests) in milliseconds. The node timeout is 500 ms less than the request-timeout to make sure we can fail properly in the server in case of connection timeout due to node connectivity problems.
 
 All of the above is available by using `--help` to get usage information.
 
 An example to run the backend with basic settings and testnet node would be:
 ```shell
-cargo run -- --node http://node.testnet.concordium.com:20000 --account-key-file <YourAccountPathToYourKeys> --cis2-token-smart-contract-index 7370 --auction-smart-contract-index 7415
+cargo run -- --node http://node.testnet.concordium.com:20000 --account-key-file <YourAccountPathToYourKeys> --cis2-token-smart-contract-index 7370 --auction-smart-contract-index 7415 --log-level debug
 ```
 
 An example to run the backend with some filled in example settings would be:
 
 ```shell
-cargo run -- --node http://node.testnet.concordium.com:20000 --cis2-token-smart-contract-index 7370 --auction-smart-contract-index 7415 --account-key-file ./4SizPU2ipqQQza9Xa6fUkQBCDjyd1vTNUNDGbBeiRGpaJQc6qX.export --log-level debug 
+cargo run -- --node http://node.testnet.concordium.com:20000 --account-key-file ./4SizPU2ipqQQza9Xa6fUkQBCDjyd1vTNUNDGbBeiRGpaJQc6qX.export --cis2-token-smart-contract-index 7370 --auction-smart-contract-index 7415 --log-level debug 
 ```
 
-To get your account file (the `3PXwJYYPf6fyVb4GJquxSZU8puxrHfzc4XogdMVot8MUQK53tW.export` file in the above example), export it from the Concordium Browser wallet for web.
+To get your account file (the `4SizPU2ipqQQza9Xa6fUkQBCDjyd1vTNUNDGbBeiRGpaJQc6qX.export` file in the above example), export it from the Concordium Browser wallet for web.
 
 <img src="./pic/pic1.png"  width="200" />
 <img src="./pic/pic2.png"  width="200" />
@@ -46,7 +47,7 @@ The smart contract code at {index: CIS2_TOKEN_CONTRACT_INDEX, subindex: 0} can b
 The smart contract code at {index: AUCTION_CONTRACT_INDEX, subindex: 0} can be found [here](https://github.com/Concordium/concordium-rust-smart-contracts/tree/main/examples/sponsored-tx-enabled-auction).
 
 See [src/main.rs](./src/main.rs) for the formats of requests and responses. Both
-requests and responses are JSON encoded. The requests are handled by handlers in [src/handlers.rs](./src/handlers.rs).
+requests and responses are JSON encoded.
 
 # Contributing
 

sponsoredTransactionsAuction/backend/src/main.rs

@@ -62,7 +62,7 @@ struct App {
     #[clap(
         long = "request-timeout",
         help = "Request timeout (both of request to the node and server requests) in milliseconds.",
-        default_value = "5000",
+        default_value = "10000",
         env = "REQUEST_TIMEOUT"
     )]
     request_timeout: u64,
@@ -183,7 +183,6 @@ async fn main() -> anyhow::Result<()> {
     // Render index.html
     let index_template = fs::read_to_string(app.frontend_assets.join("index.html"))
         .context("Frontend was not built or wrong path to the frontend files.")?;
-
     tracing::info!("Starting server...");
     let serve_dir_service = ServeDir::new(app.frontend_assets.join("assets"));
     let router = Router::new()
@@ -365,7 +364,14 @@ async fn handle_signature_bid(
 
     let mut rate_limits = state.rate_limits.lock().await;
 
-    let limit = rate_limits.entry(request.signer).or_insert(0u8);
+    // Account addresses on Concordium have account aliases. We track the
+    // rate-limits by using the alias 0 for every account. https://developer.concordium.software/en/mainnet/net/references/transactions.html#account-aliases
+    let alias_account_0 = request
+        .signer
+        .get_alias(0)
+        .ok_or_else(|| ServerError::NoAliasAccount)?;
+
+    let limit = rate_limits.entry(alias_account_0).or_insert(0u8);
 
     if *limit >= RATE_LIMIT_PER_ACCOUNT {
         tracing::warn!("Rate limit for account {} reached.", request.signer);

sponsoredTransactionsAuction/backend/src/types.rs

@@ -32,6 +32,8 @@ pub enum ServerError {
     RateLimitError,
     #[error("Unable to submit transaction on chain successfully: {0}")]
     SubmitSponsoredTransactionError(#[from] RPCError),
+    #[error("Unable to derive alias account of signer.")]
+    NoAliasAccount,
 }
 
 impl axum::response::IntoResponse for ServerError {

sponsoredTransactionsAuction/frontend/src/components/Bid.tsx

@@ -31,7 +31,11 @@ async function generateTransferMessage(
     itemIndexAuction: string,
 ) {
     try {
-        const viewItemStateParam: AuctionContract.ViewItemStateParameter = itemIndexAuction as unknown as number;
+        const viewItemStateParam: AuctionContract.ViewItemStateParameter = Number(itemIndexAuction);
+
+        if (Number.isNaN(viewItemStateParam)) {
+            throw new Error(`ItemIndex is NaN.`);
+        }
 
         const itemState: AuctionContract.ReturnValueViewItemState = await viewItemState(viewItemStateParam);
 

sponsoredTransactionsAuction/frontend/src/components/ViewItem.tsx

@@ -33,16 +33,20 @@ export default function ViewItem(props: ConnectionProps) {
 
         const viewItemStateParam: AuctionContract.ViewItemStateParameter = Number(data.itemIndex);
 
-        if (grpcClient) {
-            viewItemState(viewItemStateParam)
-                .then((returnValue) => {
-                    if (returnValue !== undefined) {
-                        setItemState(JSONbig.stringify(returnValue));
-                    }
-                })
-                .catch((e) => {
-                    setItemStateError((e as Error).message);
-                });
+        if (Number.isNaN(viewItemStateParam)) {
+            setItemStateError('ItemIndex is NaN.');
+        } else {
+            if (grpcClient) {
+                viewItemState(viewItemStateParam)
+                    .then((returnValue) => {
+                        if (returnValue !== undefined) {
+                            setItemState(JSONbig.stringify(returnValue));
+                        }
+                    })
+                    .catch((e) => {
+                        setItemStateError((e as Error).message);
+                    });
+            }
         }
     }