very simple code does warn me. Some hints are not constructive. Warning is:
ISO C++ forbids converting a string constant to ‘char*’ [-Wwrite-strings]
I tried:
char const *q = "pin"; char const *r = "\n\r"; { while(client.findUntil(*q, *r))
without success
Origin code:
while(client.findUntil("pin", "\n\r"))