You can find all the error codes, along with complete source code in Lwip template project (in examples directory) of any SDK. The espconn interface to the lwip library is available openly as C source code and you may trace your issues down from there. You can compile the lwip library from there as well.
The SDK manual does not specify anything because the error codes are actually lwip codes and you need to look up the code. There are hundreds of codes and it is not convenient to document them all as many are rarely encountered.Statistics: Posted by Guest — Tue Apr 11, 2017 1:02 pm
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