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# Running the Payment Protocol Demo
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## Node
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The node payment protocol demonstration will run automatically via:
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``` bash
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$ node examples/PayPro
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```
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You will see the server and customer logs output in the terminal.
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## Browser
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To run our payment protocol demonstration in the browser, you may run:
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``` bash
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$ node examples/PayPro/server.js -b -p 8080
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```
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This will start the payment protocol demonstration server in browser mode,
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which serves outputs in the payment protocol request (don't worry, it doesn't
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ask for *too* many testnet coins).
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Once the server is started, you can visit it in your browser:
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``` bash
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$ chromium https://localhost:8080/
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```
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You will see a simple checkout page to buy some imaginary products. Once you
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press checkout, you will see all the server and client logs in the browser as
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well as the terminal.
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If you're connected to enough peers, your transaction will be broadcast
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throughout the bitcoin testnet network and hopefully ACKed by your peers.
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## Logs
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Your logs may ultimately look something like this:
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```
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Customer: Our payment was acknowledged!
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Customer: Message from Merchant: Thank you for your payment!
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Customer: Payment sent successfully.
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```
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## Changing the server address contained in outputs
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If you want to alter the address or public key the testnet coins get sent to by
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the payment server, you can pass in the `--pubkey` or `--address` options.
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`address` has to be a testnet address, whereas `pubkey` is a hex encoded public
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key. The `--privkey` option is also available in the standard bitcoind privkey
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format.
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## Other Options
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If you you're not connected to enough peers to broadcast your transaction (by
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default, this example only connects to the core seed peers), you can enable
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peer discovery in bitcore by passing the `--discovery` (`-d`) argument onto the
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server command line.
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If you don't want to actually broadcast your transaction and want to keep your
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testnet coins, you can pass `--no-tx` on the server command line.
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If you don't want the tests to run automatically and simply host the payment
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server, simply pass `--browser` (`-b`) as mentioned above.
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