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The smallest TCP/IP stack on the planet
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unit test: rename some IPPROTO_ constants
2024-12-22 15:40:35 +01:00
.forgejo/workflows Revert linux automated test in CI 2024-12-20 23:35:16 +01:00
src unit test: rename some IPPROTO_ constants 2024-12-22 15:40:35 +01:00
tools/certs Added TLS support + tests 2024-12-20 23:31:50 +01:00
.gitignore Added port for raspberry pi pico 2024-11-24 21:34:15 +01:00
config.h Add DNS client, DHCP fixes. 2024-12-15 17:05:37 +01:00
core.md Fix callbacks, added some design doc 2024-11-03 16:26:14 +01:00
femtotcp.h Added httpd library + https test server 2024-12-22 15:38:54 +01:00
LICENSE Initial import 2024-10-27 13:27:18 +01:00
Makefile Added httpd library + https test server 2024-12-22 15:38:54 +01:00
README.md Updated README.md 2024-12-16 08:55:45 +01:00

README.md

FemtoTCP

The smallest TCP/IP stack on the planet

Description and project goals

FemtoTCP is a TCP/IP stack with no dynamic memory allocations, designed to be used in resource-constrained embedded systems.

Endpoint only mode is supported, which means that femtotcp can be used to establish network connections but it does not route traffic between different network interfaces.

A single network interface can be associated with the device.

Features supported

  • ARP (RFC 826)
  • IPv4 (RFC 791)
  • ICMP (RFC 792): only ping replies
  • DHCP (RFC 2131): client only
  • DNS (RFC 1035): client only
  • UDP (RFC 768): unicast only
  • TCP (RFC 793)
    • TCP options supported: Timestamps, Maximum Segment Size
  • BSD-like, non blocking socket API, with custom callbacks
  • No dynamic memory allocation
    • Fixed number of concurrent sockets
    • Pre-allocated buffers for packet processing in static memory

Copyright and License

FemtoTCP is licensed under the GPLv3 license. See the LICENSE file for details. Copyright (c) 2024 Daniele Lacamera. Some rights reserved.