ECONNREFUSED      137 libavformat/network.c         return AVERROR(ECONNREFUSED);
ECONNREFUSED      518 libavformat/network.c         last_err = AVERROR(ECONNREFUSED);
ECONNREFUSED       47 libavformat/network.h #ifndef ECONNREFUSED
ECONNREFUSED      262 libavformat/sapenc.c         if (ret < 0 && ret != AVERROR(ECONNREFUSED))