matlab.net.http.field.HTTPDateField class

Package: matlab.net.http.field
Superclasses: matlab.net.http.HeaderField

HTTP header field containing date

Description

An HTTPDateField object is an HTTP header field containing a date. The fields implemented by this class contain a single date in standard HTTP date format.

Creation

Description

obj = matlab.net.http.field.HTTPDateField(name) creates an HTTP date header field with the Name property set to name.

obj = matlab.net.http.field.HTTPDateField(name,value) sets the Value property to value.

Properties

Name — Date field name

'Date' | 'Expires' | 'Retry-After' | 'Accept-Datetime' | 'Last-Modified' | 'If-Modified-Since'

Date field name, specified as a string of one of these values: 'Date', 'Expires', 'Retry-After', 'Accept-Datetime', 'Last-Modified', or 'If-Modified-Since'.

To create a Date field, use the matlab.net.http.field.DateField subclass.

Attributes:

GetAccess	public
SetAccess	public

Value — Date

datetime | string

Date, specified as a datetime object or a string in a valid HTTP date format as specified in RFC 7231 Semantics and Content, section 7.1.1.1. Date/Time Formats. If a datetime object does not have a time zone, then it is assumed to be local.

Attributes:

GetAccess	public
SetAccess	public
Dependent	true

Methods

Public Methods

addFields	Add fields to HeaderField array
removeFields	Remove fields from header field array
changeFields	Change existing values in HeaderField array
replaceFields	Change values in or add fields to array of HeaderFields
getFields	Return header fields matching name or class
eq	Compare two HeaderField arrays
convertLike	Convert header field value like another header field
parse	Parse header field value and return as strings
displaySubclasses	Display supported HeaderField subclasses

Specialized for Subclass

convert

Value property of HTTPDateField as array of MATLAB® datetime objects. convert interprets the field as a comma-separated list of quoted HTTP dates.

Specialized Operators and Functions

These methods specialize standard MATLAB operators and functions for objects in this class.

isequal	true if two header field arrays are the same size and corresponding elements are equal, as described by eq method
string	Array of header fields as string, as it appears in a message. Inserts newline characters between fields but not at the end of all fields.
char	Array of header fields as character vector, as described by string method

Examples

Display HTTP Date Field

This example shows how to read the HTTP date field in a message.

import matlab.net.*;
import matlab.net.http.*;
import matlab.net.http.field.*;

httpsUrl = 'https://requestserver.mathworks.com';
uri = URI(strcat(httpsUrl, '/assets/computerVision.jpg'));
headers = DateField(datetime("today"));
req = RequestMessage('GET', headers);
response = req.send(uri);
httpDateField = response.getFields("Last-Modified");
disp(httpDateField)

  HTTPDateField with properties:

     Name: "Last-Modified"
    Value: "Fri, 02 Apr 2021 20:14:03 GMT"

Version History

Introduced in R2016b