What are Content-Language and Accept-Language?

Content-Language, an entity header, is used to describe the language(s) intended for the audience, so that it allows a user to differentiate according to the users’ own preferred language. Entity headers are used in both, HTTP requests and responses.1 Accept-Language, a request HTTP header, advertises which languages the client is able to understand, and which … Read more

JMeter Alter HTTP Headers During Test

You can dynamically construct your authorization header using Beanshell PreProcessor as follows: Add empty HTTP Header Manager as a child of your request which requires authorization Add Beanshell PreProcessor as a child of the same request with the following code: import org.apache.jmeter.protocol.http.control.Header; sampler.getHeaderManager().add(new Header(“Authorization”,”Bearer ” + vars.get(“BEARER”))); This will construct fully dynamic header using BEARER … Read more

Operating System from User-Agent HTTP Header [closed]

Here’s a quick list… let me know if I missed one you are interested in. http://www.geekpedia.com/code47_Detect-operating-system-from-user-agent-string.html: // Match user agent string with operating systems Windows 3.11 => Win16, Windows 95 => (Windows 95)|(Win95)|(Windows_95), Windows 98 => (Windows 98)|(Win98), Windows 2000 => (Windows NT 5.0)|(Windows 2000), Windows XP => (Windows NT 5.1)|(Windows XP), Windows Server 2003 … Read more

Are Duplicate HTTP Response Headers acceptable?

Yes HTTP RFC2616 available here says: Multiple message-header fields with the same field-name MAY be present in a message if and only if the entire field-value for that header field is defined as a comma-separated list [i.e., #(values)]. It MUST be possible to combine the multiple header fields into one “field-name: field-value” pair, without changing … Read more

Best HTTP Authorization header type for JWT

The best HTTP header for your client to send an access token (JWT or any other token) is the Authorization header with the Bearer authentication scheme. This scheme is described by the RFC6750. Example: GET /resource HTTP/1.1 Host: server.example.com Authorization: Bearer eyJhbGciOiJIUzI1NiIXVCJ9TJV…r7E20RMHrHDcEfxjoYZgeFONFh7HgQ If you need stronger security protection, you may also consider the following IETF … Read more