Hi, I use version 3.1.20. According to the doc, between squid and real server, keep-alive is supported. But when I use wireshark to capture the package, it's found that the TCP connection is still closed for every HTTP message. I checked the HTTP header, it's version HTTP 1.1, and "Connection: keep-alive" is also included in message from both squid and real server. Is this correct behaviour? Regards, Tian