What is the difference between HTTP parameters and HTTP headers?

Question

I read this question but it didn\'t answer my question.

To me Headers and Parameters are both dictionaries with the difference that headers is [String : String]

Answer 1

Here is the list of differences:

1. They are designed for different purposes. Headers carry meta info, parameters carry actual data.

2. Server side will automatically un-escape/decode parameter names/values. This does not apply for header names/values.

3. Header names/values need to be manually escaped/encoded at client side and be manually un-escaped/decoded at server side. Base64 encoding or percent escape is often used.

4. Parameters can be seen by end-users (query parameters) on URL but headers are hidden to end-users.