[HTTP raw request] upload file questions

[kto...@issart.com]

Please, help me to understand file upload process using HTTP raw request sampler.

I'm trying to upload a file via HTTP POST request. First, I manually uploaded a file to a resource and recorded actions by Wireshark. Then, I copied request data from Wireshark to an HTTP raw request sampler. After running my script I get "408 Request Timeout" response. What am I doing wrong?

Request data:

POST /test HTTP/1.1

Host: www.testhost.org

Connection: keep-alive

Content-Length: 622

Content-Type: multipart/form-data; boundary=----WebKitFormBoundarybFM3GLZw0xYxeZZn

------WebKitFormBoundarybFM3GLZw0xYxeZZn

Content-Disposition: form-data; name="do"

test

------WebKitFormBoundarybFM3GLZw0xYxeZZn

Content-Disposition: form-data; name="subdo"

file_upload

------WebKitFormBoundarybFM3GLZw0xYxeZZn

Content-Disposition: form-data; name="file_upload"; filename="Untitled.png"

Content-Type: image/png

PNG

IHDRwSÞsRGB®ÎégAMA± üa pHYsÃÃÇo¨dIDATWcøÿÿ?þþ§5IEND®B`

------WebKitFormBoundarybFM3GLZw0xYxeZZn

Content-Disposition: form-data; name="http_submit"

Start HTTP upload

------WebKitFormBoundarybFM3GLZw0xYxeZZn--

Additional question: there is a "Data file path" bar in an HTTP raw request sampler. As I understand, binary value of a file specified, added directly after request data. Right? May I use "Data file path" to specify a path to a file in example above?

[Andrey Pokhilko]

Hi,

Request timeout means that most likely your request does not contain enough data, or not all of \r\n terminators are correct. The len of body of request has to match Content-Length value strictly. JMeter UI might be tricky to satisfy all these requirements, that's why "Data file path" is there. I usually put all headers into UI, while all body is inside external file. Thus, I can make sure the file size strictly matches content-length. But it does not solve problem of "don't forget \r\n between headers and body", which is easy to overlook because it is whitespace.

Andrey Pokhilko

07.08.2018 09:19, kto...@issart.com пишет:

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[kto...@issart.com]

Thanks, Andrey. I really do appreciate your work!

вторник, 7 августа 2018 г., 13:58:04 UTC+7 пользователь Andrey Pokhilko написал:

[Colin McCormack]

i'm pre-building the request with ${variable} in my pre-built requests - how do i get the Content-Length - do i have to do a dry-run a pre-pre-built jsr223 req to save the Content-Length then add that?

[DT]

Content-Length is basically the size of your request in bytes in case of POST

So just calculate your variable size in bytes and that would be it, if you want to do this dynamically as well you can use __groovy() function like:

${__groovy(vars.get('variable').length(),)}

More information: https://httpwg.org/specs/rfc7230.html#header.content-length

[Colin McCormack]

ah great - this works for me thanks - but now i get a 200 back and nothing in the server, certainly no response back in jmeter - must be something on the wire or server blocks