>>> On Saturday 07 November 2015 at 09:30:04, 聡司蛭田 wrote: >>>> Dear >>>> >>>> I have question about HTTPS communication through Squid Proxy Server. >>>> >>>> HTTP 503 error frequency occurs. >>>> 10.xx.xx.xx - - [01/Nov/2015:03:44:33 +0900] "CONNECT >>> xxxx.xxxx.xxx.io:443 >>>> HTTP/1.1" 503 0 "-" "Javaa/1.7.0_71" TCP_MISS:DIRECT >>>> xxxx.xxxx.xxx.io:443 is ELB (Internet-Facing Load Balancer) DNS name. >>> Hold up. Squid is being instructed to open a TCP connection from itself to xxxx.xxxx.xxx.io and deliver the contents that follow the CONNECT message there. If xxxx.xxxx.xxx.io is the ELB, what do you expect will happen when Squid obeys? The short answer is "Forwarding Loop", eventually the cycle of ELB->Squid->ELB->Squid ... ends up going through one of the Squid it has already passed through which kills the loop with a 503. Amos _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users