[squid-users] Time out where? TCP_MISS_TIMEDOUT

[Sebastian Goicochea]

I've found several of these in my access.log

1435009516.011 899906 10.60.3.221 TCP_MISS_TIMEDOUT/200 8790 GET 
http://t4.kn3.net/taringa/7/5/4/5/0/5/blackz89/236x177_1F2.jpg - 
ORIGINAL_DST/104.18.42.237 image/jpeg
1435009516.011 899840 10.63.6.215 TCP_MISS_TIMEDOUT/200 8742 GET 
http://pagead2.googlesyndication.com/pagead/imgad?id=CICAgKDT-NKwfhCsAhjIATIIcTeEVWIn93c 
- ORIGINAL_DST/173.194.42.26 application/x-javascript


I don't quite understand it. Which connection is timing out? Squid to 
webserver? Squid to client?
Couldn't find much on Google


Thanks,
Sebastian