---
title: "questions on socket API"
url: "https://maker.wiznet.io/forum/14793"
markdown_url: "https://maker.wiznet.io/forum/14793/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "Vien Huy Nguyen"
created: "2023-01-28T16:38:10+09:00"
last_activity: "2023-01-31T05:10:48+09:00"
language: "en"
views: 207
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# questions on socket API

## Question

Asked by Vien Huy Nguyen on 2023-01-28 in Ethernet Chips.

What should I pass as an argument for ‘flag’ parameter when calling int8_t socket(uint8_t sn, uint8_t protocol, uint16_t port, uint8_t flag);

## Replies

### Reply 1 by Matthew, 2023-01-31

Hi,
Usually 0x00 is used.
And, You can use it by referring to “SOCKET FLAG” of socket.h.

[![image](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/4/4b2f95fa32efb9cfe61b9fd960f637db8bf7fe67.png) image983×419 29.2 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/4/4b2f95fa32efb9cfe61b9fd960f637db8bf7fe67.png)

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Source: https://maker.wiznet.io/forum/14793