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Error when cookies contain double quotes #711

na-- opened this issue Jul 16, 2018 · 3 comments


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commented Jul 16, 2018

While testing something else, I stumbled on a small bug with double quotes in cookie values... The following code:

import http from 'k6/http';

export default function () {
	let resp = http.get("", {
		"cookies": {
			"test": "\""

produces this... warning?:

2018/07/16 10:18:33 net/http: invalid byte '"' in Cookie.Value; dropping invalid bytes

It seems that for some reason, the Go standard library logs this directly, which is super annoying... Skimming some golang issues, it's not exactly clear how we should escape those values...


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commented Jul 24, 2018


Same problem for me !

The application I test uses double quoted cookies values with separators + uppercase headers

Cookie: foo-boa="DATA-NET-CMP:1234564:123456789789798AEZEAZEA:zzzX"

I ended up patching net/* go sources to make it permissive :-(

  • Removed cookie/headers sanitization .

Although it' dirty hacks, I didn't find any elegant way to do it.



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commented Jul 24, 2018

Yeah, when I posted this issue I skimmed a bunch of golang github issues and discussions and I don't think I saw a nice way to work around this...


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commented Oct 9, 2018

you can also get the cookie directly from the r.header["cookie"] and parse it yourself but it's not elegant neither.

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