If I use wget, and get an html file from a URL. How can I generate a HAR file from that HTML file.
Any open source implementations for generating har files from html files?
Once the HAR file is generated I can read data from the HAR file using harlib.
If possible please suggest C, C++ or Java implementations.
The primary point of the HAR format is to have a standard HTTP tracing format that many tools can use and analyze. In other words, it's original intent was and primarily is, for performance analysis, not "archiving" webpages per se.
If you fetch a page with wget, you're missing 99% of all the performance data. To capture the necessary data you really need a browser to execute the requests, fetch all the associated resources, save all the timers, etc. This will enable you to build the waterfall charts, etc.
If you need to capture this data on the server, then you can use pcap to capture the TCP trace and then convert that to HAR, although you still need a client which will actually parse the HTML and request all the sub-resources (pcap is just listening in the background). Alternatively, you can route your browser through a proxy and let it spit out a HAR file for you.
Last but not least, you can just drive the browser through its debug interface and export the HAR file that way. Java example for driving Firefox: https://github.com/Filirom1/browsermob-page-perf
Related
Using the "inspect" feature, the network resources that a certain website was using. Here it's just an interactive real-time bus map.
I added just one filter, the string vehicle and filter narrows down to requests to service-status.js being made on 30 second intervals each file is 2.5kB and 102ms which was the time for the request to happen. Finally, it says 32kB / 1.9 MB transferred.
How do *.json files or a transcript of the exchanges listed here? There is a HAR file option, which saves extra information. Using the search filter, I only need a fraction of the network resources being transferred.
You could try webQsee (https://chrome.google.com/webstore/detail/webqsee-web-sniffer-recor/gamdpfnfkjknkimfbboonmgdfnondfme?hl=de), it offers a lot of filtering and export options. So you can not only export to HAR format but also to Excel.
With the closure of MyJson.com, where can a developer upload a json file to be parsed? I have completed my file with Json Feed Manager and uploaded the file to GitHub, but the ability to read to use the URL as a raw does not work any longer. I'm thinking this was turned into a paid feature vs. free. Some of the other Roku developers have hinted the best suggestion is to acquire a paid webhost and make a directory for json to be uploaded into it and point the Direct Publisher to the source.
https://community.roku.com/t5/Roku-Direct-Publisher/bd-p/roku-direct-publisher
I have completed my file with Json Feed Manager and uploaded the file to GitHub, but the ability to read to use the URL as a raw does not work any longer.
I don't believe this is the case. You can still access raw content from GitHub through the domain https://raw.githubusercontent.com
Template:
https://raw.githubusercontent.com/<username>/<repository>/<branch>/<path-to-file>
Example:
https://raw.githubusercontent.com/pomber/covid19/master/package.json
I exported a session from Fiddler to saz files.
This session includes only jpg files and I'm wondering - how can I extract the jpg files from saz quickly and easily?
Thanks!
The easiest way to extract the JPEG files is to use Fiddler itself. Fiddler allows you to load a SAZ file (under File/Load Archive..).
Once loaded, just right-click on the HTTP message with the JPEG and select Save/Response/Response Body....
If you want to do it the hard way, a SAZ file is just a zip file. Below is from the Fiddler FAQ page
SAZ files are simply specially formatted .ZIP files. If you rename a
.SAZ file to .ZIP, you can open it for viewing using standard ZIP
viewing tools.
According to the FAQ, the HTTP payload data is stored in a directory called raw. The JPEG data will be in one of the sessid#_s.txt files, but embedded in a HTTP response message. Strip the HTTP headers to get the JPEG (assuming there is no extra encoding in the HTTP message).
sessid#_s.txt - contains the raw server request
Fiddler now requires a password to work, and I'm not willing to register.
First, I create a folder and put the .saz file inside
Second, I change to that directory and use unzip to extract the files because a saz file is a standard archive
Third, I open _index.htm with any browser and click the links in the index file
Have fun.
Is there a way to create a har file with xhr request only in chrome dev tools?
Even though I can filter the requests in dev tools, when I save it as a har file, it contains all the requests.
If the dev devtools doesn't support that, is there a alternative way to do this?
Seems like there is no direct way to filter the requests. What I did was, creating the har file with all the requests and filter that file, then save it again after removing unwanted requests.
There is a entry called entries in the content inside har file. It contains all the requests we have sent in an array. I got the har file content and filtered it using JSONPath expressions.
About JSONPath, JSONPAth evaluator
Expression to filter application/json types : $..entries[?(#.response.content.mimeType == "application/json")]
After that I have replaced the entries array with the one I have filtered in the har file and saved it again. This way you can get a har file with filtered requests. Same way you can filter XHR or any other types using the relevant JSONPath expression
I recently came across this same issue while doing some research for mocking network calls in playwright. It does provide ability to record only the call you are interested in. Here is the link:
https://playwright.dev/docs/network#recording-har-with-cli
I'm working on functional testing of a REST API using Jmeter and JSON. I've got file uploading working but I cant seem to get the file downloading to work in jmeter. I'm saving the response as noted in this post: JMeter - File upload and file download scenario
When I do this, I am getting close but not quite exactly what I need. This is and example of what I am getting:
--0rVAdzesdQq7VrwJaRoYGm_UHdMD5nhi9_5w4u
Content-Disposition: form-data; name="api-test"; filename="LIBFILE1.txt"
Content-Type: text/plain
Content-Transfer-Encoding: binary
Library File for Automated Smoke Test
This file is used to test file library upload for automated smoke tests.
--0rVAdzesdQq7VrwJaRoYGm_UHdMD5nhi9_5w4u--
How can I get the download to only save the file contents? In this example, it should only be:
Library File for Automated Smoke Test
This file is used to test file library upload for automated smoke tests.
This is a simple textfile. I would also like to download the other formats that I'm uploading including jpg, png, docx, pdf but it wont be right if it has this extra data coming with it. I figure once I get a simple text file working, it will help me get the more difficult file types.
Well, Save Responses to a file listener will store the data you can observe in the "Response Data" tab of the View Results Tree listener. If you see these Content-Type, Content-Disposition, etc. headers as response data - most probably your upload wasn't successful as you should not be getting the headers this way.
I would recommend double checking that the same request being executed via browser or i.e. Postman tool returns the same response and fix your JMeter script in case of differences.
See Performance Testing: Upload and Download Scenarios with Apache JMeter article for details on how to properly mimic file operations with JMeter.
Alternative way of saving response data into a file is using JSR223 Listener, given you select "groovy" in the language dropdown you should be able to save the response using the following simple script:
new File("/path/to/your/file.txt").setBytes(prev.getResponseData())