# null

# A664CloseProxyPort

[CAPL Functions](../../CAPLfunctions.md) » AFDX » A664CloseProxyPort

**Valid for**: CANoe DE • CANoe4SW DE

## Function Syntax

```
long a664CloseProxyPort (WORD channel, DWORD outMsgId)
```

## Description

Method to close a specific socket port, which was generated using [a664InitProxyPort](CAPLfunctionA664InitProxyPort.md).

This call is only required, if an existing message-pair or UDP-port combination needs to be modified.

On measurement end all existing proxy-ports are closed automatically.

## Parameters

* **`<channel>`**: AFDX-channel (1 to 16) to which socket packets should be mapped to (sent and observed).
* **`<outMsgID>`**: messageID which is observed on AFDX-channel and transferred to the socket if detected.

## Return Values

* **0**: Successfully closed socket.
  * **Note**: closing a none existing socket is not an error.
* **-1**: Error: closing an existing socket failed.

## Example

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