A solana program support user can trade peer to peer solana token between 2 users

Notes: Because program designed and developed in May, 2022, so, have some piece of code outdated with latest version.

• Context
• Logic
• How to use ?
• Run example

• In some bussiness cases, out token has not had ido, or listed in any DEX. Pool liquidity has not provide. So, user can not trade or swap token. In this case, trading p2p program support user can create a deal to trade token between specify partner or any user has demand trade with this token.
• Example use case: As a discord user in any community want to trade token with another discord user.

• In this program. Currently supporting 3 types of trade here:
  • Token - Token: User A has Token A and want to trade x Token A amount with someone to receive y Token B amount
  • Token - SOL: User A has Token A and want to trade x Token A amount with someone to receive y SOL amount
  • SOL - Token: User A has SOL and want to trade x SOL amount with someone to receive y Token B amount
• Diagram for each trade type

Token - Token

Token - SOL

SOL - Token

• Basically, To create a deal, i designed a class TradeP2P that supported all methods related to create, exchange and cancel a deal.

  • Create a trade instance example:

      const rpc =  anchor.web3.clusterApiUrl("devnet")
      const connection = new anchor.web3.Connection(rpc);
      const tradeInstance = new TradeP2P(connection);

  • Follow up TradeType

      export enum TradeType {
          SPLSPL,
          SPLSOL,
          SOLSPL,
      }

• Create trade:

  Follow up TradeOrderRequest

     export type TradeOrderRequest = {
       creator: PublicKey;
       orderId: number;
       specifyPartner?: PublicKey;
       tradeValue: number;
       receiveValue: number;
       creatorSendAccount: PublicKey;
       creatorReceiveAccount: PublicKey;
       tradeMint?: PublicKey;
       receiveMint?: PublicKey;
       timestamp: string;
       tradeType: TradeType;
    };

  • SPL - SPL:

       const tradeOrder: TradeOrderRequest = {
          creator: tradeCreator.publicKey,
          orderId: orderId,
          tradeValue: tradeValue,
          receiveValue: receivevalue,
          creatorSendAccount: creatorSendTokenAccount,
          creatorReceiveAccount: creatorReceiveTokenAccount,
          tradeMint: tradeMintAddress,
          receiveMint: receiveMintAddress,
          timestamp: Date.now().toString(),
          tradeType: TradeType.SPLSPL,
       };
    
       const transcationBuffer = await tradeInstance.createTrade(tradeOrder);

  • SPL - SOL:

      const tradeOrder: TradeOrderRequest = {
         creator: tradeCreator.publicKey,
         orderId: orderId,
         tradeValue: tradeValue,
         receiveValue: receivevalue,
         creatorReceiveAccount: tradeCreator.publicKey,
         creatorSendAccount: creatorSendTokenAccount,
         tradeMint: tradeMintAddress,
         timestamp: Date.now().toString(),
         tradeType: TradeType.SPLSOL,
      };
    
      const transactionBuffer = await tradeInstance.createTrade(tradeOrder);

  • SOL - SPL:

        const tradeOrder: TradeOrderRequest = {
         creator: tradeCreator.publicKey,
         orderId: orderId,
         tradeValue: tradeValue,
         receiveValue: receivevalue,
         creatorSendAccount: tradeCreator.publicKey,
         creatorReceiveAccount: creatorReceiveTokenAccount,
         receiveMint: receiveMintAddress,
         timestamp: Date.now().toString(),
         tradeType: TradeType.SOLSPL,
      };
    
      const transactionBuffer = await tradeInstance.createTrade(tradeOrder);

• Exchange:

  • P2P SPL - SPL:

       const tradeInfo: TradeInfo = {
        orderId: orderId,
        creator: tradeCreator,
        creatorSendAccount: creatorSendTokenAccount,
        creatorReceiveAccount: creatorReceiveTokenAccount,
        tradeMint: tradeMintAddress,
        receiveMint: receiveMintAddress,
        tradeType: TradeType.SPLSPL,
      };
    
      const partnerInfo: PartnerInfo = {
        partner: partner.publicKey,
        partnerSendAccount: partnerSendTokenAccount,
        partnerReceiveAccount: partnerReceiveTokenAccount,
      };
    
      const transactionBuffer = await tradeInstance.exchange(tradeInfo, partnerInfo);

  • P2P SPL - SOL:

        const tradeInfo: TradeInfo = {
         orderId: orderId,
         creator: tradeCreator,
         creatorReceiveAccount: tradeCreator,
         creatorSendAccount: creatorSendTokenAccount,
         tradeType: TradeType.SPLSOL,
         tradeMint: tradeMintAddress,
       };
    
       const partnerInfo: PartnerInfo = {
         partner: partner.publicKey,
         partnerSendAccount: partner.publicKey,
         partnerReceiveAccount: partnerReceiveTokenAccount,
       };
    
       const transactionBuffer = await tradeInstance.exchange(tradeInfo, partnerInfo);

  • P2P SPL - SPL:

      const tradeInfo: TradeInfo = {
        orderId: orderId,
        creator: tradeCreator,
        creatorSendAccount: creatorSendTokenAccount,
        creatorReceiveAccount: creatorReceiveTokenAccount,
        tradeMint: tradeMintAddress,
        receiveMint: receiveMintAddress,
        tradeType: TradeType.SPLSPL,
      };
    
      const partnerInfo: PartnerInfo = {
        partner: partner.publicKey,
        partnerSendAccount: partnerSendTokenAccount,
        partnerReceiveAccount: partnerReceiveTokenAccount,
      };
    
      const transactionBuffer = await tradeInstance.exchange(tradeInfo, partnerInfo);

• Cancel: Follow up CancelParams

     export type CancelParams = {
        creator: PublicKey;
        orderId: number;
        creatorSendAccount: PublicKey;
        tradeMint: PublicKey;
        tradeType: TradeType;
     }

  • SPL - SPL:

       const cancelParams: CancelParams = {
         orderId: orderId,
         creator: tradeCreator.publicKey,
         creatorSendAccount: creatorSendTokenAccount,
         tradeType: TradeType.SPLSPL,
         tradeMint: tradeMintAddress,
       };
       const transactionBuffer = await tradeInstance.cancel(cancelParams);

  • SPL - SOL:

       const cancelParams: CancelParams = {
          orderId: orderId,
          creator: tradeCreator.publicKey,
          creatorSendAccount: creatorSendTokenAccount,
          tradeType: TradeType.SPLSOL,
          tradeMint: tradeMintAddress,
       };
       const transactionBuffer = await tradeInstance.cancel(cancelParams);

  • SOL - SPL:

        const tradeOrder: TradeOrderRequest = {
           creator: tradeCreator.publicKey,
           orderId: orderId,
           tradeValue: tradeValue,
           receiveValue: receivevalue,
           creatorSendAccount: tradeCreator.publicKey,
           creatorReceiveAccount: creatorReceiveTokenAccount,
           receiveMint: receiveMintAddress,
           timestamp: Date.now().toString(),
           tradeType: TradeType.SOLSPL,
        };
    
        const transactionBuffer = await tradeInstance.createTrade(tradeOrder);

• run create and exchange SPL-SPL:

     npx ts-node clients/splspl.ts