CODEWITHSUNDEEP
jsontomcatcompression
Kof
Kof

Reputation: 25293

Tomcat with Spring MVC doesn't compress response

I've configured my Tomcat 6.0, installed on Linux server over AWS EC2, to compress large JSON object responses (~54k size) - but for some reason it's not compressing it.

Connector definition at /usr/share/tomcat6/conf/server.xml -

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000" compression="force"
               compressableMimeType="text/html,text/xml,text/plain,application/javascript,application/json,text/javascript,text/json"
               redirectPort="8443" />

<Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" 
           maxThreads="200" scheme="https" secure="true" compression="force"
           compressableMimeType="text/html,text/xml,text/plain,application/javascript,application/json,text/javascript,text/json" 
           keystoreFile="/usr/share/tomcat6/conf/my.keystore" keystorePass="password"
           clientAuth="false" sslProtocol="TLS" />

Request headers, accepts gzip -

POST /mycommand HTTP/1.1
Host: my.host.com
Proxy-Connection: close
Accept-Encoding: gzip
Content-Type: application/x-www-form-urlencoded; charset=utf-8
Content-Length: 431

Response headers, with MIME as configured at Connector -

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: application/json;charset=UTF-8
Vary: Accept-Encoding
Date: Mon, 27 Aug 2012 20:19:05 GMT
Connection: close
Content-Length: 55565

I've tried compressed="2048", same problem.

My command method at server is using Spring MVC with jackson JAR to create JSON responses -

@RequestMapping(method=RequestMethod.POST, value="/mycommand")
public @ResponseBody BasicResponse doCommand( 
    ...
}

Any idea?

Upvotes: 2

Views: 4240

Answers (1)

Kof
Kof

Reputation: 25293

OK, that's annoying...

It turns out that Burp Suite, the proxy I've been using to monitor all communication had unpack gzip / deflate checked.

You have to scroll all the way down and uncheck it to receive compressed responses.

Once removed, everything works fine.

Upvotes: 2

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