-1 can be *normal*, as MHD calls 'accept()' (possibly via multiple threads when using a thread pool) until there are no more clients. You should check what errno says.
Also, in case accept4() is buggy on your platform, it is an optimization; so you could #undef HAVE_ACCEPT4 if accept() + setsockopt() works better. But I've not yet heard about a buggy accept4() implementation... Happy hacking! Christian On 01/22/2018 11:32 PM, Marcel Rutten wrote: > Found it. accept4() returns an invalid socket. > I will carry on tomorrow, it's almost midnight in my time zone ...
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