---
title: tcpi_ecn_server_setup
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 13.0+]
path: kernel/tcp_info/3944444-tcpi_ecn_server_setup
---

# tcpi_ecn_server_setup

## Declaration

```occ
u_int16_t tcpi_ecn_server_setup:1;
```