REST Client Header Support

The following JadeRestRequest class constants and methods enable you to add, modify, remove, and view the headers that are to be sent in a REST request.

JadeRestRequest class AddHeader_Forbidden and AddHeader_Success constants.
JadeRestRequest methods:
- addHeader, which adds or modifies the header specified in the key parameter with the value specified in the value parameter
- getAllHeaders, which returns all headers that will be included in the REST request that can be modified
- getHeaderValue, which returns the value of the header specified in the key parameter if it has been set
- isHeaderForbidden, which returns true if the header specified in the header parameter is one that is forbidden and cannot be modified
- setAcceptHeader, which sets the Accept header to the value specified in the value parameter
- setContentTypeHeader, which sets the Content‑Type header to the value specified in the value parameter
- setPragmaHeader, which sets the Pragma header to the value specified in the value parameter
- setUserAgentHeader, which sets the User-Agent header to the value specified in the value parameter

The special forbidden headers that cannot be modified are listed at:

https://developer.mozilla.org/en-US/docs/Glossary/Forbidden_header_name

The following method is an example of adding a header that is to be sent in a REST request.

sendBasicAuthExample();
vars
    client : JadeRestClient;
    request : JadeRestRequest;
    response : JadeRestResponse;
    base64EncodedCreds : String;
begin
    client := create JadeRestClient("http://localhost/JadeRestSite/jadehttp.dll");
    request := create JadeRestRequest('headers');
    base64EncodedCreds := 
            "ThisIsNotARealUsername:ThisIsNotARealPassword".Binary.base64Encode();
    request.addHeader("Authorization", "Basic " & base64EncodedCreds);
    write request.getAllHeaders();
/* Authorization: Basic 
         VABoAGkAcwBJAHMATgBvAHQAQQBSAGUAYQBsAFUAcwBlAHIAbgBhAG0AZQA6AFQAa
         ABpAHMASQBzAE4AbwB0AEEAUgBlAGEAbABQAGEAcwBzAHcAbwByAGQA */
    create response;
    client.get(request, response);
epilog
    delete client;
    delete request;
    delete response;
end;

2022.0.01 and higher