Aug 14, 2012 squid proxy The system returned: (104) Connection reset by peer I'm getting The system returned: (104) Connection reset by peer whenever I search in the side bar in google and yahoo. We are going through squid proxy server. Which cropped up today after no changes to the system: I can successfully ssh into my ubuntu 64-bit 9.10 machine (via OS X with iTerm), but after about 30 seconds, the connection drops with the message 'Connection reset by peer Connection to xx.xx.xx.xx closed'. How to properly setup squid3 as HTTPS proxy? I keep getting a 'Connection timed out error' whenever I hit an HTTPS protocol web. Here is my /etc/squid3/squid.
What is the meaning of the 'connection reset by peer' error on a TCP connection? Is it a fatal error or just a notification or related to the network failure?
amarnath2 Answers
It's fatal. The remote server has sent you a RST packet, which indicates an immediate dropping of the connection, rather than the usual handshake. This bypasses the normal half-closed state transition. I like this description:
'Connection reset by peer' is the TCP/IP equivalent of slamming the phone back on the hook. It's more polite than merely not replying, leaving one hanging. But it's not the FIN-ACK expected of the truly polite TCP/IP converseur.
user207421This means that a TCP RST was received and the connection is now closed. This occurs when a packet is sent from your end of the connection but the other end does not recognize the connection; it will send back a packet with the RST bit set in order to forcibly close the connection.
This can happen if the other side crashes and then comes back up or if it calls close() on the socket while there is data from you in transit, and is an indication to you that some of the data that you previously sent may not have been received.
It is up to you whether that is an error; if the information you were sending was only for the benefit of the remote client then it may not matter that any final data may have been lost. However you should close the socket and free up any other resources associated with the connection.
Chris Huang-Leaverprotected by bummiJul 1 '15 at 6:07
Linux Connection Reset By Peer
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