Hi All, I know, according to wiki (http://wiki.squid-cache.org/Features/StoreID) ICP & HTCP are not supported. “URL queries received from cache_peer siblings are not passed through StoreID helper. So the resulting store/cache lookup will MISS on URLs normally alterd by StoreID.” Still, in lab test show that cache peer is queried by the StoreID altered URL, so this part is actually working. At least in version 3.4.1. The real problem is, when a siblink replies with UDP_HIT, the actual HTTP request sent to this peer uses the altered URL, instead of the original one. Here's a simple example: 1. Peer A receives request for URL like http://r2---sn-bavc5aoxu-nv4e.googlevideo.com/videoplayback? 2. Peer A's StoreID helper normalizes the URL to http://c.youtube.com.squid.internal/videoplayback/09ebf166f4892e4f.140.950272-1187839 3. Peer A makes an ICP/HTCP query to Peer B for http://c.youtube.com.squid.internal/videoplayback/09ebf166f4892e4f.140.950272-1187839 4. Peer B replies with "UDP_HIT/000 0 HTCP_TST http://c.youtube.com.squid.internal/videoplayback/09ebf166f4892e4f.140.950272-1187839"; 5. Peer A creates HTTP connection to Peer B and makes "GET http://c.youtube.com.squid.internal/videoplayback/09ebf166f4892e4f.140.950272-1187839 HTTP/1.1" 6. Peer B, tries to connect to the non-existent host c.youtube.com.squid.internal and as a result generates HTTP 504 error. 7. Peer A receives "TCP_MISS/504 4181 GET http://c.youtube.com.squid.internal/videoplayback/09ebf166f4892e4f.140.950272-1187839 - HIER_NONE/- text/html" and goes directly to youtube "TCP_MISS/200 237938 GET http://r2---sn-bavc5aoxu-nv4e.googlevideo.com/videoplayback? - HIER_DIRECT/r2---sn-bavc5aoxu-nv4e.googlevideo.com application/octet-stream" The question is how to force squid to use the original URL when making the TCP/HTTP connection to the peer after UDP_HIT? UDP request shall keep using the normalized/rewritten URL. Thank in advance for any ideas. Best, Niki
