# Protocol


[API catalog](/reference/api/) · [Docker Sandboxes overview](/reference/api/sandboxes/latest/) · [Product manual](https://docs.docker.com/ai/sandboxes-api/) · [OpenAPI specification](/reference/api/sandboxes/api.yaml)

API version: v1


> This API is experimental. Features, interfaces,
> and behavior may change.




Schema constraints and annotations:

```json
{
  "description": "Protocol names the transport protocol for a published port.\n\nValues:\nunspecified: unspecified means the backend default, TCP.\ntcp: tcp publishes TCP traffic.\nudp: udp publishes UDP traffic.\ntcp4: tcp4 publishes IPv4 TCP traffic.\ntcp6: tcp6 publishes IPv6 TCP traffic.\nudp4: udp4 publishes IPv4 UDP traffic.\nudp6: udp6 publishes IPv6 UDP traffic.",
  "enum": [
    "unspecified",
    "tcp",
    "udp",
    "tcp4",
    "tcp6",
    "udp4",
    "udp6"
  ],
  "title": "Protocol",
  "type": "string"
}
```