> For the complete documentation index, see [llms.txt](https://contracts.synapseprotocol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://contracts.synapseprotocol.com/messaging/apps/pingpong.md).

# PingPong

## Methods

### disable

```solidity
function disable() external nonpayable
```

### executeMessage

```solidity
function executeMessage(bytes32 _srcAddress, uint256 _srcChainId, bytes _message, address _executor) external nonpayable
```

Called by MessageBus (MessageBusReceiver)

#### Parameters

| Name         | Type    | Description                                                                    |
| ------------ | ------- | ------------------------------------------------------------------------------ |
| \_srcAddress | bytes32 | The bytes32 address of the source app contract                                 |
| \_srcChainId | uint256 | The source chain ID where the transfer is originated from                      |
| \_message    | bytes   | Arbitrary message bytes originated from and encoded by the source app contract |
| \_executor   | address | Address who called the MessageBus execution function                           |

### maxPings

```solidity
function maxPings() external view returns (uint256)
```

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### messageBus

```solidity
function messageBus() external view returns (contract IMessageBus)
```

#### Returns

| Name | Type                 | Description |
| ---- | -------------------- | ----------- |
| \_0  | contract IMessageBus | undefined   |

### numPings

```solidity
function numPings() external view returns (uint256)
```

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### ping

```solidity
function ping(uint256 _dstChainId, address _dstPingPongAddr, uint256 pings) external nonpayable
```

#### Parameters

| Name              | Type    | Description |
| ----------------- | ------- | ----------- |
| \_dstChainId      | uint256 | undefined   |
| \_dstPingPongAddr | address | undefined   |
| pings             | uint256 | undefined   |

### pingsEnabled

```solidity
function pingsEnabled() external view returns (bool)
```

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

## Events

### Ping

```solidity
event Ping(uint256 pings)
```

#### Parameters

| Name  | Type    | Description |
| ----- | ------- | ----------- |
| pings | uint256 | undefined   |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://contracts.synapseprotocol.com/messaging/apps/pingpong.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.