> ## Documentation Index
> Fetch the complete documentation index at: https://injectivelabs-docs-ai-sdk.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Exchange

`exchange` 模块是 Injective Chain 的核心，支持完全去中心化的现货和衍生品交易所。
它是链的核心模块，与 `auction`、`insurance`、`oracle` 和 `peggy` 模块紧密集成。

exchange 协议使交易者能够在任意现货和衍生品市场上创建和交易。
订单簿管理、交易执行、订单匹配和结算的整个过程都通过 exchange 模块编码的逻辑在链上进行。

## 消息

让我们探索（并提供示例）Exchange 模块导出的消息，我们可以使用这些消息与 Injective 链交互。

### MsgDeposit

此消息用于将代币从 Bank 模块发送到钱包的 subaccount

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { toChainFormat } from "@injectivelabs/utils";
import { MsgDeposit } from "@injectivelabs/sdk-ts/core/modules";
import { getEthereumAddress } from "@injectivelabs/sdk-ts/utils";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";

const privateKey = "0x...";
const injectiveAddress = "inj1...";

const amount = {
  denom: "inj",
  amount: toChainFormat(1).toFixed(),
};

const ethereumAddress = getEthereumAddress(injectiveAddress);
const subaccountIndex = 0;
const suffix = "0".repeat(23) + subaccountIndex;
const subaccountId = ethereumAddress + suffix;

const msg = MsgDeposit.fromJSON({
  amount,
  subaccountId,
  injectiveAddress,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```

### MsgWithdraw

此消息用于将代币从钱包的 subaccount 发送回用户的 Bank 资金

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { toChainFormat } from "@injectivelabs/utils";
import { MsgWithdraw } from "@injectivelabs/sdk-ts/core/modules";
import { getEthereumAddress } from "@injectivelabs/sdk-ts/utils";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";

const privateKey = "0x...";
const injectiveAddress = "inj1...";

const amount = {
  denom: "inj",
  amount: toChainFormat(1).toFixed(),
};

const ethereumAddress = getEthereumAddress(injectiveAddress);
const subaccountIndex = 0;
const suffix = "0".repeat(23) + subaccountIndex;
const subaccountId = ethereumAddress + suffix;

const msg = MsgWithdraw.fromJSON({
  amount,
  subaccountId,
  injectiveAddress,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```

### MsgCreateSpotLimitOrder

此消息用于创建现货限价订单

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { MsgCreateSpotLimitOrder } from "@injectivelabs/sdk-ts/core/modules";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";
import {
  getEthereumAddress,
  spotPriceToChainPriceToFixed,
  spotQuantityToChainQuantityToFixed,
} from "@injectivelabs/sdk-ts/utils";

const privateKey = "0x...";
const injectiveAddress = "inj1...";
const feeRecipient = "inj1...";
const market = {
  marketId: "0x...",
  baseDecimals: 18,
  quoteDecimals: 6,
  minPriceTickSize: "" /* 从链上获取 */,
  minQuantityTickSize: "" /* 从链上获取 */,
  priceTensMultiplier: "" /** 可以从 getSpotMarketTensMultiplier 获取 */,
  quantityTensMultiplier: "" /** 可以从 getSpotMarketTensMultiplier 获取 */,
};

const order = {
  price: 1,
  quantity: 1,
};

const ethereumAddress = getEthereumAddress(injectiveAddress);
const subaccountIndex = 0;
const suffix = "0".repeat(23) + subaccountIndex;
const subaccountId = ethereumAddress + suffix;

const msg = MsgCreateSpotLimitOrder.fromJSON({
  subaccountId,
  injectiveAddress,
  orderType: 1 /* Buy */,
  price: spotPriceToChainPriceToFixed({
    value: order.price,
    tensMultiplier: market.priceTensMultiplier,
    baseDecimals: market.baseDecimals,
    quoteDecimals: market.quoteDecimals,
  }),
  quantity: spotQuantityToChainQuantityToFixed({
    value: order.quantity,
    tensMultiplier: market.quantityTensMultiplier,
    baseDecimals: market.baseDecimals,
  }),
  marketId: market.marketId,
  feeRecipient: feeRecipient,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```

### MsgCreateSpotMarketOrder

此消息用于创建现货市价订单

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { MsgCreateSpotMarketOrder } from "@injectivelabs/sdk-ts/core/modules";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";
import {
  getEthereumAddress,
  spotPriceToChainPriceToFixed,
  spotQuantityToChainQuantityToFixed,
} from "@injectivelabs/sdk-ts/utils";

const privateKey = "0x...";
const injectiveAddress = "inj1...";
const feeRecipient = "inj1...";
const market = {
  marketId: "0x...",
  baseDecimals: 18,
  quoteDecimals: 6,
  minPriceTickSize: "" /* 从链上获取 */,
  minQuantityTickSize: "" /* 从链上获取 */,
  priceTensMultiplier: "" /** 可以从 getSpotMarketTensMultiplier 获取 */,
  quantityTensMultiplier: "" /** 可以从 getSpotMarketTensMultiplier 获取 */,
};
const order = {
  price: 10,
  quantity: 1,
};

const ethereumAddress = getEthereumAddress(injectiveAddress);
const subaccountIndex = 0;
const suffix = "0".repeat(23) + subaccountIndex;
const subaccountId = ethereumAddress + suffix;

const msg = MsgCreateSpotMarketOrder.fromJSON({
  subaccountId,
  injectiveAddress,
  orderType: 1 /* Buy */,
  price: spotPriceToChainPriceToFixed({
    value: order.price,
    tensMultiplier: market.priceTensMultiplier,
    baseDecimals: market.baseDecimals,
    quoteDecimals: market.quoteDecimals,
  }),
  quantity: spotQuantityToChainQuantityToFixed({
    value: order.quantity,
    tensMultiplier: market.quantityTensMultiplier,
    baseDecimals: market.baseDecimals,
  }),
  marketId: market.marketId,
  feeRecipient: feeRecipient,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```