Official Documentation for Ethernet client.status() ?

Where do I find some information about the returned codes of



You may look at the source code, i.e. the file EthernetClient.cpp somewhere within the Arduino program directory, then the w5100.h / .cpp files in the utilities subdirectory. I'm afraid you won't be much enlightened, because it boils down to a socket register for which I couldn't find the allowed values and their meaning, but it could help restricting your search.