Typical lines in file looks like this:
2017/08/27 07:24:38,827.00,0.00,129.00,123.00,61.00,444.00,24.54,50.24,0.00,1,0.00,0.00,1,22740.00,
2017/08/27 07:24:43,827.00,0.00,131.00,126.00,63.00,452.00,24.53,50.31,0.00,1,0.00,0.00,1,22740.00,
2017/08/27 07:24:48,827.00,0.00,131.00,126.00,63.00,452.00,24.53,50.31,0.00,1,0.00,0.00,1,22740.00,
But after some time something happens and the following is written:
.8,s+řŐÖ en-US;q=0.4,en;q=0.2 ge/webp,image/apng,*/*;q=0.8 hrome/60.0.3112.101 Safari/537.36 31,2+ řÓ ESSIONID=01 8,sl;q=0.6,en-US;q=0.4,en;q=0.2 q=0.9,image/webp,image/apng,*/*;q=0.8 e/Ç plain
Content-Length: 6097
Connection: close
I'm writing to file with printf_P