Update DEMISTO_HTTP_HEADERS_REGEX_PATTERN to handle Cookie headers

[diaznet]

Status

Ready

Related Issues

fixes: n/a

Description

In the current implementation of DEMISTO_HTTP_HEADERS_REGEX_PATTERN it is not possible to pass 'Cookie: ' headers.
'Cookie' headers are usually passed in the following forms in a HTTP request:

One-liner:
Cookie: key1=value; key2=value;
If one wants to pass this as a header in DEMISTO_HTTP_HEADERS_REGEX_PATTERN it should translate to

Cookie=key1=value; key2=value;

This is invalid with the current regex, because of white spaces and multiple '=' signs.

Multi-Liner:
Cookie: key1=value Cookie: key2=value
If one wants to pass this as a header in DEMISTO_HTTP_HEADERS_REGEX_PATTERN it should translate to

Cookie=key1=value,Cookie=key2=value

This is also invalid with the current regex, because of multiple '=' signs.

My proposal with this merge proposal is to update the regex to handle the multi-liner case without breaking current behavior.
The updated regex handles specifically "Cookie" headers.

Must have

• Unit Test or Example Code
• Changelog entry

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