Uploading images via gatling

Gatling (Open-Source)
1

Hi,

I’m trying to upload an image via Gatling but keep getting 413s from the server. It clearly works via the web front end so I suspect something is wrong with my method of creating the request.

Here’s what I’m doing:

val headers = Map(
“”“Accept”"" → “”“text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8"”",
“”“Content-Type”"" → “”“multipart/form-data; boundary=---------------------------19577276091468095107188555610"”")

exec(http(“Upload_Image”)
.post( “”"/photo-upload""")
.headers(headers)
.bodyPart(ByteArrayBodyPart(“image.jpg”, photo)
.check(status.is(200))

Photo is an image converted to a byteArray.

Is there something I’m missing here?

Thanks,

Jim

2

413 is Request entity too large, so it seems your byte array is too large for your service.

3

“413 is Request entity too large, so it seems your byte array is too large for your service.”

The application can upload images, my question was how do I via Gatling?

I don’t envisage changing the application to support the tool. The recorder generates a .txt file which uploads fine but I’d like to dynamically load the data. My question again is how do I POST an image via Gatling?

4

"413 is Request entity too large, so it seems your byte array is too large
for your service."

The application can upload images, my question was how do I via Gatling?

I don't envisage changing the application to support the tool.

No, you didn't get me: your application complains that the upload byte
array is too large (larger than it's configured limit).
Either there's a problem with the way you generated your byte array (it's
indeed too large), or with the way your application reports a 413
(something else happens, such as an invalid message, but your application
wrongly replies 513 instead of the real message).

The recorder generates a .txt file which uploads fine but I'd like to
dynamically load the data. My question again is how do I POST an image via
Gatling?

Have you read the documentation?
http://gatling.io/docs/2.0.3/http/http_request.html#multipart-form

5

Just to finish up where I got with this last week,

This worked for me:

.bodyPart(RawFileBodyPart(“photo”, ImageUtils.createOnFileSystem(new Image().getAbsolutePath()).contentType(“image/jpeg”)).asMultipartForm

Ideally I wouldn’t have like to store the image but the ByteArrayPart wasn’t working (maybe server restrictions).

6

So you’re saying that the very close below doesn’t work for you?

.bodyPart(ByteArrayBodyPart(“photo”, bytes).contentType(“image/jpeg”)).asMultipartForm

Would you mind sharing a problematic file, please?
Also, do you use http or https?

7

The file is an individuals image so I can’t share unfortunately. It’s also over HTTP.

I looked into the server logs and found the validation failures where it looked for the content-disposition type when using a byte array. That this means in plain English is it needed a file name or else it didn’t recognise it as a file. The correct method is:

.bodyPart(ByteArrayBodyPart(“photo”, photoArray).fileName(“photo.jpg”).contentType(“image/jpeg”)).asMultipartForm

Thanks for looking into it, was more of a thinking out loud exercise in the end.

8

Glad you found it out.