---
title: "WizFi360 maximum payload size"
url: "https://maker.wiznet.io/forum/16188"
markdown_url: "https://maker.wiznet.io/forum/16188/md"
type: "Forum topic"
category: "Wireless"
author: "Richard"
created: "2026-10-29T18:49:09+09:00"
last_activity: "2026-10-29T18:49:09+09:00"
language: "en"
views: 2
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# WizFi360 maximum payload size

## Question

Asked by Richard on 2026-10-29 in Wireless.

I'm developing an application which requires sending files over TCP using a WizFi360. I seem to be having some success, but when I capture packets arriving at my server I find that the maximum payload sent appears to be 1024 bytes, with anything greater than that being fragmented. Whilst this is acceptable it is a little bit inefficient. Is there any way to increase the payload up toward 1460 Bytes?

I'm sending using AT+CIPSENDBUF which seemed the most sensible choice for a large file ( a few MBytes )

---

Source: https://maker.wiznet.io/forum/16188