Caldarale, Charles R wrote:
From: Michael [mailto:sg...@gmx.net]
Subject: Re: HTTP Connector GZIP compression
this is my server.xml: http://www.pastie.org/437454
Other than having <Context> elements in there, the only other obviously wrong item is
the compressionMinSize attribute; there isn't one for a <Connector>.
Correct, I removed that element.
CompressionMinSize is given bytes, isn't it?
There's no such attribute for a <Connector>, so your question is moot. Read
the doc:
http://tomcat.apache.org/tomcat-5.5-doc/config/http.html#Standard%20Implementation
You are testing through port 8080, aren't you? I don't see any problems with compression
on 5.5.27 when testing on my laptop; I see a header of "Content-Encoding: gzip"
on all appropriate responses.
You need to supply the URLs you're using and the response headers as seen by the browser. (Live HTTP headers for Firefox is good for this.)
Yes, I am on port 8080. Local testing.
I have altered the Connctor to:
-------------------------------------
<Connector compression="80000"
compressableMimeType="text/html,text/javascript" URIEncoding="UTF-8"
acceptCount="100" connectionTimeout="20000" disableUploadTimeout="true"
enableLookups="false" maxHttpHeaderSize="8192" maxSpareThreads="75"
maxThreads="150" minSpareThreads="25" port="8080" redirectPort="8443" />
-------------------------------------
I have two testfiles on my server:
1. lorem.jsp: 72 726 bytes
2. prototype.js: 134.057 bytes
According to the above setting only the JS file should be compressed.
Inspecting the requests with Fiddler and Firebug (caches cleared)
results in:
1. lorem.jsp:
# Result Protocol Host URL Body Caching Content-Type Process Comments
Custom
0 200 HTTP localhost:8080 /java-demo/lorem.jsp 19 665
text/html;charset=UTF-8 firefox:500
GET /java-demo/lorem.jsp HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.8)
Gecko/2009032609 Firefox/3.0.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: de-DE,de;q=0.8,nl-NL;q=0.6,nl;q=0.4
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Cookie: JSESSIONID=E0EEB796A88FECFE98882E37EB499565
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=UTF-8
Transfer-Encoding: chunked
Content-Encoding: gzip
Vary: Accept-Encoding
Date: Sun, 05 Apr 2009 16:57:07 GMT
a
�
2. prototype.js:
# Result Protocol Host URL Body Caching Content-Type Process Comments
Custom
1 200 HTTP localhost:8080 /java-demo/prototype.js 134 057
text/javascript firefox:500
GET /java-demo/prototype.js HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.8)
Gecko/2009032609 Firefox/3.0.8
Accept: */*
Accept-Language: de-DE,de;q=0.8,nl-NL;q=0.6,nl;q=0.4
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://localhost:8080/java-demo/lorem.jsp
Cookie: JSESSIONID=E0EEB796A88FECFE98882E37EB499565
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
ETag: W/"134057-1238784461906"
Last-Modified: Fri, 03 Apr 2009 18:47:41 GMT
Content-Type: text/javascript
Content-Length: 134057
Date: Sun, 05 Apr 2009 16:57:07 GMT
[body omitted]
Regarding number 1: this is compressed although I set threshold to 80
000 bytes
Regarding number 2: the Javascript ist not compressed!
No I turn compression off:
# Result Protocol Host URL Body Caching Content-Type Process Comments
Custom
0 200 HTTP localhost:8080 /java-demo/lorem.jsp 19 665
text/html;charset=UTF-8 firefox:500
# Result Protocol Host URL Body Caching Content-Type Process Comments
Custom
1 200 HTTP localhost:8080 /java-demo/prototype.js 134 057
text/javascript firefox:500
lorem.jsp still compressed: WTF
This is really weird, I simply do *not* unterstand the compression logic.
Thanks,
Mike
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