Connected: {walletInfo.walletName}
Address: {walletInfo.address}
);
}
```
## Server-side message building
For production applications, build transaction messages on the server to centralize tracking and validation.
### Backend endpoint
```typescript expandable theme={"theme":{"light":"github-light-default","dark":"dark-plus"},"languages":{"custom":["/resources/grammars/tolk.tmLanguage.json","/resources/grammars/tlb.tmLanguage.json","/resources/grammars/fift.tmLanguage.json","/resources/grammars/tasm.tmLanguage.json","/resources/grammars/func.tmLanguage.json"]}}
import { createTonPayTransfer } from "@ton-pay/api";
import { validateWalletAddress } from "./utils/validation";
app.post("/api/create-transaction", async (req, res) => {
const { orderId, senderAddr } = req.body;
try {
// Validate inputs
if (!validateWalletAddress(senderAddr)) {
return res.status(400).json({ error: "Invalid wallet address" });
}
// Fetch order details from database
const order = await db.orders.findById(orderId);
if (!order) {
return res.status(404).json({ error: "Order not found" });
}
if (order.status !== "pending") {
return res.status(400).json({ error: "Order already processed" });
}
// Create transaction message
const { message, reference, bodyBase64Hash } = await createTonPayTransfer(
{
amount: order.amount,
asset: order.currency || "TON",
recipientAddr: "