Creates a URLRequest object. If System.useCodePage is
true, the request is encoded using the system code page,
rather than Unicode. If System.useCodePage is
false, the request is encoded using Unicode, rather than the
system code page.
The URL to be requested. You can set the URL later by using the
url property.
The MIME content type of the content in the the data
property.
The default value is
application/x-www-form-urlencoded.
Note:The FileReference.upload(),
FileReference.download(), and HTMLLoader.load()
methods do not support the URLRequest.contentType
property.
When sending a POST request, the values of the contentType
and data properties must correspond properly. The value of
the contentType property instructs servers on how to
interpret the value of the data property.
data property is a URLVariables
object, the value of contentType must be
application/x-www-form-urlencoded.data property is any other type,
the value of contentType should indicate the type of the POST
data that will be sent(which is the binary or string data contained in
the value of the data property).FileReference.upload(), the Content-Type of the
request is set automatically to multipart/form-data, and the
value of the contentType property is ignored.In Flash Player 10 and later, if you use a multipart Content-Type(for example "multipart/form-data") that contains an upload(indicated by a "filename" parameter in a "content-disposition" header within the POST body), the POST operation is subject to the security rules applied to uploads:
Also, for any multipart Content-Type, the syntax must be valid (according to the RFC2046 standards). If the syntax appears to be invalid, the POST operation is subject to the security rules applied to uploads.
An object containing data to be transmitted with the URL request.
This property is used in conjunction with the method
property. When the value of method is GET, the
value of data is appended to the value of
URLRequest.url, using HTTP query-string syntax. When the
method value is POST(or any value other than
GET), the value of data is transmitted in the
body of the HTTP request.
The URLRequest API offers binary POST support and support
for URL-encoded variables, as well as support for strings. The data object
can be a ByteArray, URLVariables, or String object.
The way in which the data is used depends on the type of object used:
POST data. For GET,
data of ByteArray type is not supported. Also, data of ByteArray type is
not supported for FileReference.upload() and
FileReference.download().POST, the variables are encoded using
x-www-form-urlencoded format and the resulting string is used as
POST data. An exception is a call to
FileReference.upload(), in which the variables are sent as
separate fields in a multipart/form-data post.GET, the URLVariables object defines variables to be sent
with the URLRequest object.POST or GET data.This data is not sent until a method, such as
navigateToURL() or FileReference.upload(), uses
the URLRequest object.
Note: The value of contentType must correspond to
the type of data in the data property. See the note in the
description of the contentType property.
Controls the HTTP form submission method.
For SWF content running in Flash Player(in the browser), this property
is limited to GET or POST operations, and valid values are
URLRequestMethod.GET or
URLRequestMethod.POST.
For content running in Adobe AIR, you can use any string value if the content is in the application security sandbox. Otherwise, as with content running in Flash Player, you are restricted to using GET or POST operations.
For content running in Adobe AIR, when using the
navigateToURL() function, the runtime treats a URLRequest
that uses the POST method(one that has its method property
set to URLRequestMethod.POST) as using the GET method.
Note: If running in Flash Player and the referenced form has no
body, Flash Player automatically uses a GET operation, even if the method
is set to URLRequestMethod.POST. For this reason, it is
recommended to always include a "dummy" body to ensure that the correct
method is used.
The array of HTTP request headers to be appended to the HTTP request. The array is composed of URLRequestHeader objects. Each object in the array must be a URLRequestHeader object that contains a name string and a value string, as follows:
Flash Player and the AIR runtime impose certain restrictions on request headers; for more information, see the URLRequestHeader class description.
Not all methods that accept URLRequest parameters support the
requestHeaders property, consult the documentation for the
method you are calling. For example, the
FileReference.upload() and
FileReference.download() methods do not support the
URLRequest.requestHeaders property.
Due to browser limitations, custom HTTP request headers are only
supported for POST requests, not for GET
requests.
The URL to be requested.
Be sure to encode any characters that are either described as unsafe in
the Uniform Resource Locator specification(see
http://www.faqs.org/rfcs/rfc1738.html) or that are reserved in the URL
scheme of the URLRequest object(when not used for their reserved
purpose). For example, use "%25" for the percent(%) symbol
and "%23" for the number sign(#), as in
"http://www.example.com/orderForm.cfm?item=%23B-3&discount=50%25".
By default, the URL must be in the same domain as the calling file, unless the content is running in the Adobe AIR application security sandbox. If you need to load data from a different domain, put a URL policy file on the server that is hosting the data. For more information, see the description of the URLRequest class.
For content running in Adobe AIR, files in the application security sandobx - files installed with the AIR application - can access URLs using any of the following URL schemes:
http and httpsfileapp-storageappNote: IPv6(Internet Protocol version 6) is supported in AIR and
in Flash Player 9.0.115.0 and later. IPv6 is a version of Internet
Protocol that supports 128-bit addresses(an improvement on the earlier
IPv4 protocol that supports 32-bit addresses). You might need to activate
IPv6 on your networking interfaces. For more information, see the Help for
the operating system hosting the data. If IPv6 is supported on the hosting
system, you can specify numeric IPv6 literal addresses in URLs enclosed in
brackets([]), as in the following.
rtmp://[2001:db8:ccc3:ffff:0:444d:555e:666f]:1935/test
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The URLRequest class captures all of the information in a single HTTP request. URLRequest objects are passed to the
load()methods of the Loader, URLStream, and URLLoader classes, and to other loading operations, to initiate URL downloads. They are also passed to theupload()anddownload()methods of the FileReference class.A SWF file in the local-with-filesystem sandbox may not load data from, or provide data to, a resource that is in the network sandbox.
By default, the calling SWF file and the URL you load must be in the same domain. For example, a SWF file at www.adobe.com can load data only from sources that are also at www.adobe.com. To load data from a different domain, place a URL policy file on the server hosting the data.
However, in Adobe AIR, content in the application security sandbox (content installed with the AIR application) is not restricted by these security limitations. For content running in Adobe AIR, files in the application security sandbox can access URLs using any of the following URL schemes:
httpandhttpsfileapp-storageappContent running in Adobe AIR that is not in the application security sandbox observes the same restrictions as content running in the browser (in Flash Player), and loading is governed by the content's domain and any permissions granted in URL policy files.
For more information related to security, see the Flash Player Developer Center Topic: Security.