Compressed GZIP Request sent to jetty using jersey-client is not working for FormDataMultiPart - jetty

Question

Jersey Client code and jetty.xml -
...
public class App
{
public static void main( String[] args ) throws FileNotFoundException
{
String token = "abc";
String file = "C:\\importedcerts\\TestpkgRoll.log";
String uri = "http://localhost:8008/api/arsys/v1/entry/myattach1";
Client client = ClientBuilder.newBuilder()
.register(EncodingFilter.class)
.register(GZipEncoder.class)
.property(ClientProperties.USE_ENCODING, "gzip")
.register(MultiPartFeature.class).build();
FormDataMultiPart formDataMultiPart = new FormDataMultiPart();
// json data
String json = "{ \"values\" : { ";
json += "\"Submitter__c\" : \"Allen\", ";
json += "\"Short Description__c\" : \"testing 123\""
+ ", ";
json += "\"Attachment__c\" : \"testrollback.log\"";
json += " } }";
formDataMultiPart.field("entry", json,
MediaType.APPLICATION_JSON_TYPE);
StreamDataBodyPart streamDataBodyPart = new StreamDataBodyPart("attach-Attachment__c", new FileInputStream(new File(file)), "testrollback.log", MediaType.APPLICATION_OCTET_STREAM_TYPE);
formDataMultiPart.bodyPart(streamDataBodyPart);
Builder request = client.target(uri).request(MediaType.APPLICATION_JSON);
request.header("Authorization", "AR-JWT " + token);
request.header("Content-Encoding", "gzip");
Response response = null;
response = request.method("POST",
// Entity.json(json));
Entity.entity(formDataMultiPart, MediaType.MULTIPART_FORM_DATA_TYPE));
System.out.println(response);
}
}
<Call name="insertHandler">
<Arg>
<New id="GzipHandler" class="org.eclipse.jetty.server.handler.gzip.GzipHandler">
<Set name="minGzipSize"><Property name="jetty.gzip.minGzipSize" deprecated="gzip.minGzipSize" default="0"/></Set>
<Set name="checkGzExists"><Property name="jetty.gzip.checkGzExists" deprecated="gzip.checkGzExists" default="false"/></Set>
<Set name="inflateBufferSize"><Property name="jetty.gzip.inflateBufferSize" default="1024"/></Set>
<Set name="excludedAgentPatterns">
<Array type="String">
<Item><Property name="jetty.gzip.excludedUserAgent" deprecated="gzip.excludedUserAgent" default=".*MSIE.6\.0.*"/></Item>
</Array>
</Set>
<Call name="addIncludedMimeTypes">
<Arg><Array type="String">
<Item>application/octet-stream</Item>
</Array></Arg>
</Call>
<Call name="addExcludedMimeTypes">
<Arg><Array type="String">
<Item>application/json</Item>
</Array></Arg>
</Call>
</New>
</Arg>
</Call>
...
However above request processing fails with Exception -
org.jvnet.mimepull.MIMEParsingException: Missing start boundary
However in my client when I comment out as below
...
// .register(EncodingFilter.class)
// .register(GZipEncoder.class)
// .property(ClientProperties.USE_ENCODING, "gzip")
// request.header("Content-Encoding", "aplication/gzip, gzip");
...
I am able to process request successfully , what could be an issue when above portion is uncommented , is it in client code or jetty.xml which resides on server ?

Answer 1

You need to enable the GzipHandler on Jetty to have it process compressed content (request or response).
That XML block you pasted (from the gzip module on jetty-home) is not something you should be editing to enable GzipHandler, use the proper split of ${jetty.home} and ${jetty.base}, enable the gzip module, and then configure it with the appropriate properties that this split provides for you.
By default, the auto-decompression of request body content is disabled.
But setting GzipHandler.setInflateBufferSize(int) to a positive value the decompression (aka inflation) of request body content will occur.