The Reference Guide describes the ESP programming APIs and provides architectural overviews and background programming materials.
The ESP Native APIs consist of C language headers, function prototypes, structure definitions and defines. They are divided into one of these areas.
|Http||Http Client and Server Library API|
|MPR||Multithreaded Platform Runtime API|
Rather than providing a blanket backwards compatibility guarantee, APIs are classified according to their stability. These Stability Classifications should assist developers in migrating to new versions of ESP.