https://www.nongnu.org/lwip/2_1_x/index.htmlOverviewINTRODUCTIONlwIP เป็น a small independent implementation ของ the TCP/IP protocol suite.
จุดเน้นอง the lwIP TCP/IP implementation คือลด the RAM usageในขณะที่ยังคงมี a full scale TCP. นี้ทำให้ lwIP เหมาะสมสำหรับใช้ใน embedded systems ที่มี tens of kilobytes of free RAM และที่ว่างสำหรับประมาณ 40 kilobytes of code ROM.
lwIP ถูกพัฒนาเริ่มแรกโดย Adam Dunkels ที่ the Computer and Networks Architectures (CNA) lab ที่ the Swedish Institute of Computer Science (SICS) และขณะนี้ถูกพัฒนาและดูแลโดย a worldwide network of developers.
FEATURES * IP (Internet Protocol, IPv4 and IPv6) including packet forwarding over
multiple network interfaces
* ICMP (Internet Control Message Protocol) for network maintenance and debugging
* IGMP (Internet Group Management Protocol) for multicast traffic management
* MLD (Multicast listener discovery for IPv6). Aims to be compliant with
RFC 2710. No support for MLDv2
* ND (Neighbor discovery and stateless address autoconfiguration for IPv6).
Aims to be compliant with RFC 4861 (Neighbor discovery) and RFC 4862
(Address autoconfiguration)
* DHCP, AutoIP/APIPA (Zeroconf) and (stateless) DHCPv6
* UDP (User Datagram Protocol) including experimental UDP-lite extensions
* TCP (Transmission Control Protocol) with congestion control, RTT estimation
fast recovery/fast retransmit and sending SACKs
* raw/native API for enhanced performance
* Optional Berkeley-like socket API
* TLS: optional layered TCP ("altcp") for nearly transparent TLS for any
TCP-based protocol (ported to mbedTLS) (see changelog for more info)
* PPPoS and PPPoE (Point-to-point protocol over Serial/Ethernet)
* DNS (Domain name resolver incl. mDNS)
* 6LoWPAN (via IEEE 802.15.4, BLE or ZEP)
APPLICATIONS * HTTP server with SSI and CGI (HTTPS via altcp)
* SNMPv2c agent with MIB compiler (Simple Network Management Protocol), v3 via altcp
* SNTP (Simple network time protocol)
* NetBIOS name service responder
* MDNS (Multicast DNS) responder
* iPerf server implementation
* MQTT client (TLS support via altcp)