Introduction - If you have any usage issues, please Google them yourself
LwIP is TCP/IP protocol stack as a realization. LwIP main purpose is to reduce the memory utilization and code size, so lwIP suitable for small, resource-limited processor such as embedded systems. In order to reduce the processor and memory requirements, lwIP can copy any data without the process of reducing the API. This paper describes the Design and Implementation of lwIP. Describes the protocol and subsystems used in the algorithms and data structures such as storage and buffer management system. LWIP API also includes a reference manual and use lwIP some code examples.