This project is not part of the GNU Project.

lwIP is a small independent implementation of the TCP/IP protocol suite that has been initially developed by Adam Dunkels and is now continued here.

The focus of the lwIP TCP/IP implementation is to reduce resource usage while still having a full scale TCP. This makes lwIP suitable for use in embedded systems with tens of kilobytes of free RAM and room for around 40 kilobytes of code ROM.

Main features include:
- Protocols: IP, IPv6, ICMP, ND, MLD, UDP, TCP, IGMP, ARP, PPPoS, PPPoE
- DHCP client, DNS client (incl. mDNS hostname resolver), AutoIP/APIPA (Zeroconf), SNMP agent (v1, v2c, v3, private MIB support & MIB compiler)
- APIs: specialized APIs for enhanced performance, optional Berkeley-alike socket API
- Extended features: IP forwarding over multiple network interfaces, TCP congestion control, RTT estimation and fast recovery/fast retransmit
- Addon applications: HTTP(S) server, SNTP client, SMTP(S) client, ping, NetBIOS nameserver, mDNS responder, MQTT client, TFTP server

lwIP is licenced under a BSD-style license: http://lwip.wikia.com/wiki/License.

Contrib code (including example ports and addon applications) is available here:
git://git.savannah.nongnu.org/lwip/lwip-contrib.git
http://git.savannah.gnu.org/cgit/lwip/lwip-contrib.git

Travis CI building lwip master:
https://travis-ci.org/yarrick/lwip-merged

Registration Date: Thu Oct 17 21:13:13 2002
License: Modified BSD License
Development Status: 5 - Production/Stable