Pre Requisites

Install required library:

sudo apt-get install libudev-dev cargo

Install Rust:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Install solana cli tool (See solana-cli usage)

sh -c "$(curl -sSfL https://release.solana.com/stable/install)"

Install spl-token-cli

cargo install spl-token-cli

Next, create new keypair

solana-keygen new --outfile ~/.config/solana/devnet.json

You will get:

• path to ID: ~/.config/solana/devnet.json
• pubkey: A8wk...Xu [you can see it by typing solana-keygen pubkey]
• passphrase to recover your new keypair: throw board ... lawn response. Store it!

Next, say solana to use generated key and set network to devnet

solana config set --keypair ~/.config/solana/devnet.json --url https://api.devnet.solana.com

Next, add balance (run in additional window, it will take long time):

for i in {1..25}; do solana airdrop 1; sleep 1; done

cd js; npm install; cd -

Token Swap Program

Full documentation is available at https://spl.solana.com/token-swap

Smart Contract is in the ./program directory. JavaScript bindings are available in the ./js directory.

Build

cd js; npm run build:program; cd -

Deploy the smart contract

Need to have at least 4 SOL.

cd js; npm run deploy:program; cd -

Create pools

To get wallet address run

solana address

Create pools (devnet)

Provide Roman address and ask to send you coins To confirm you have enough tokens run

spl-token accounts

To get SOL (Wrapped) run:

spl-token wrap 25

Create js/.env by running the following command

cd js; npm run cluster:devnet; cd -

Devnet token address mapping:

• SOLX: 3Wm65cRmFAbiC52YXjw1dZkJLsYA75kvNFBdaZVjVQwD
• USDC: CB74zeEZk138FikM4W7b71eshsFttLq3LRFWqpAwXFXi
• USDT: CWgY911b1UszYmKiGYAoEbWrTNNgY1KuybJufzhsTxKx
• SOL(WRAP): So11111111111111111111111111111111111111112

!!! IMPORTANT: make sure you prepared .env before every pool creation

Fullfill js/.env and run:

cd js; npm run create-pool; cd -