I squid-users, I am trying to cache some jar from java web start. I augmented the cache_dir size to match the jar size and I tuned the refresh_pattern parameter for jar file like this : cache_dir ufs /local/squid 1000 16 256 refresh_pattern -i \.jar$ 0 100% 1440 override-expire override-lastmod reload-into-ims ignore-no-cache ignore-private ignore-auth But squid won't cache the jar file. In the store.log : 1237561956.490 RELEASE 00 00000085 982C3FB51B721FD777E121DF5C23653C 200 1237561059 1237455030 -1 application/java-archive 38363415/16182969 GET http://server_IP:8080/superviseurUcte/gsrAppSigne.jar Squid seem to release it as soon as it get it, but why ? Furthermore if a download the jar file with a python request, containing apparently the same options, squid caches it. in the store.log 1237479895.109 SWAPOUT 00 00000009 95484B2D4855572C7835C663D0871C0D 200 1237479005 1237455702 -1 application/java-archive 37531320/37531320 GET http://server_IP:8080/superviseurUcte/gsrAppSigne.jar Then If I refresh the jar with javaws, squid uses its cache. But if I change the jar, again javaws -> never goes into cache python -> cache I used wireshark to capture the request packets : === the packet which caches (python) Frame 1 (502 bytes on wire, 502 bytes captured) Ethernet II, Src: HewlettP_46:97:c4 (00:1a:4b:46:97:c4), Dst: Ibm_d8:40:5c (00:14:5e:d8:40:5c) Internet Protocol, Src: source_IP (source_IP), Dst: proxy_IP (proxy_IP) Transmission Control Protocol, Src Port: 39047 (39047), Dst Port: squid (3128), Seq: 0, Ack: 0, Len: 448 Hypertext Transfer Protocol GET http://server_IP:8080/superviseurUcte/gsrAppSigne.jar HTTP/1.1\r\n content-type: application/x-java-archive\r\n accept-encoding: pack200-gzip,gzip\r\n User-Agent: JNLP/6.0 javaws/1.6.0_01 (b06) Java/1.6.0_01\r\n UA-Java-Version: 1.6.0_01\r\n Host: server_IP:8080\r\n Cache-Control: no-cache\r\n Pragma: no-cache\r\n Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2\r\n Proxy-Connection: keep-alive\r\n If-Modified-Since: Wed, 31 Dec 1969 23:59:59 GMT\r\n \r\n === the packet which won't cache (java web start) Frame 4 (502 bytes on wire, 502 bytes captured) Ethernet II, Src: HewlettP_46:97:c4 (00:1a:4b:46:97:c4), Dst: Ibm_d8:40:5c (00:14:5e:d8:40:5c) Internet Protocol, Src: source_IP (source_IP), Dst: proxy_IP (proxy_IP) Transmission Control Protocol, Src Port: 39003 (39003), Dst Port: squid (3128), Seq: 0, Ack: 0, Len: 448 Hypertext Transfer Protocol GET http://server_IP:8080/superviseurUcte/gsrAppSigne.jar HTTP/1.1\r\n content-type: application/x-java-archive\r\n accept-encoding: pack200-gzip,gzip\r\n User-Agent: JNLP/6.0 javaws/1.6.0_01 (b06) Java/1.6.0_01\r\n UA-Java-Version: 1.6.0_01\r\n Host: server_IP:8080\r\n Cache-Control: no-cache\r\n Pragma: no-cache\r\n Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2\r\n Proxy-Connection: keep-alive\r\n If-Modified-Since: Wed, 31 Dec 1969 23:59:59 GMT\r\n \r\n I can join the python source, but for the javaws it is another story, I don't know if it uses some special TCP option or something that forces squid to not put the jar file in its cache... Any advice will be greatly apprecied ! -- Thibault ketterer
