You can also use the URLLoader class to access files on the local file system in contexts where local file access is permitted such as the Flash Player local-with-filesystem sandbox and the AIR application sandbox.
The ActionScript 3. For more information on handling events in ActionScript 3. Downloaded data is not available until the download has completed. You can monitor the progress of the download bytes loaded and bytes total by listening for the progress event to be dispatched. However, if a file loads quickly enough a progress event might not be dispatched.
When a file has successfully downloaded, the complete event is dispatched. The URLLoader. For example, to upload an XML packet to a server-side script, you could use the following code:. Finally, the example creates a URLLoader object and sends the request to the remote script by using the load method.
The URLStream class provides access to the downloading data as the data arrives. The URLStream class also lets you close a stream before it finishes downloading.
The downloaded data is available as raw binary data. When reading data from a URLStream object, use the bytesAvailable property to determine whether sufficient data is available before reading it. An EOFError exception is thrown if you attempt to read more data than is available. The httpResponseStatus event is delivered before any response data. When you build dynamic applications, it can be useful to load data from external files or from server-side scripts.
This lets you build dynamic applications without having to edit or recompile your application. Then your application can load the contents of a static text file instead of querying the database each time. The external document, params. The file contains two parameters, monthNames and dayNames. Each parameter contains a comma-separated list that is parsed as strings. You can split this list into an array using the String.
If the remote document contains name-value pairs, you can parse the data using the URLVariables class by passing in the contents of the loaded file, as follows:. Each name-value pair from the external file is created as a property in the URLVariables object. Each property within the variables object in the previous code sample is treated as a string.
If the value of the name-value pair is a list of items, you can convert the string into an array by calling the String. The three possible values for the URLLoader.
The following code demonstrates how setting the URLLoader. When the file has completely downloaded, the Event. A server-side script can process the user name and password, validate it against a database, and return confirmation of whether the user-supplied credentials are valid. The following snippet creates a URLVariables object named variables, which creates a new variable called name. A string that uniquely identifies the signed Adobe platform component to be stored to or retrieved from the Flash Player cache.
All SWZ files are signed by Adobe. A digest corresponds to a single cached file; if you change the file in any way, its digest will change in an unpredictable way.
By using a digest, you can verify the cached file across multiple domains. Two files with the same digest are the same file, and two files with different digests are not the same file. A file cannot practically be created to "spoof" a digest and pretend to be another digest. The digest is based on an SHA message digest algorithm 64 characters long in hexadecimal format. A SWZ file matches if its digest matches the one you provide. Specifies whether redirects are to be followed true or not false.
Specifies the idle timeout value in milliseconds for this request. The idle timeout is the amount of time the client waits for a response from the server, after the connection is established, before abandoning the request. Specifies whether the HTTP protocol stack should manage cookies for this request.
When true , cookies are added to the request and response cookies are remembered. If false , cookies are not added to the request and response cookies are not remembered, but users can manage cookies themselves by direct header manipulation. On other operating systems, adding cookies to a request is permitted irrespective of whether manageCookies is set to true or false.
When permitted, you can add cookies to a request manually by adding a URLRequestHeader object containing the cookie data to the requestHeaders array. On Mac OS, cookies are shared with Safari. To clear cookies on Mac OS:. Controls the HTTP form submission method. For content running in Adobe AIR, you can use any string value if the content is in the application security sandbox. For this reason, it is recommended to always include a "dummy" body to ensure that the correct method is used.
Not all methods that accept URLRequest parameters support the requestHeaders property, consult the documentation for the method you are calling. For example, the FileReference. The URL to be requested. 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.
IPv6 is a version of Internet Protocol that supports bit addresses an improvement on the earlier IPv4 protocol that supports 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.
Specifies whether the local cache should be consulted before this URLRequest fetches data. Specifies the user-agent string to be used in the HTTP request. The default value is the same user agent string that is used by Flash Player, which is different on Mac, Linux, and Windows.
Creates a URLRequest object. If System. After an initial request has been redirected, this allows subsequent reqeusts to be sent directly to the redirected server location. The method must be called before this URLRequest is loaded. Also, the caller can optionally supply a string or regular expression in the pattern parameter.
When reading data from a URLStream object, use the bytesAvailable property to determine whether sufficient data is available before reading it. An EOFError exception is thrown if you attempt to read more data than is available. When you build dynamic applications, it can be useful to load data from external files or from server-side scripts.
This lets you build dynamic applications without having to edit or recompile your application. Then your application can load the contents of a static text file instead of querying the database each time.
The external document, params. The file contains two parameters, monthNames and dayNames. Each parameter contains a comma-separated list that is parsed as strings. You can split this list into an array using the String. If the remote document contains name-value pairs, you can parse the data using the URLVariables class by passing in the contents of the loaded file, as follows:.
Each name-value pair from the external file is created as a property in the URLVariables object. Each property within the variables object in the previous code sample is treated as a string.
If the value of the name-value pair is a list of items, you can convert the string into an array by calling the String. The three possible values for the URLLoader. The following code demonstrates how setting the URLLoader. When the file has completely downloaded, the complete event is dispatched and the trace function outputs the contents of the file to the command line.
A server-side script can process the user name and password, validate it against a database, and return confirmation of whether the user-supplied credentials are valid. The following snippet creates a URLVariables object named variables, which creates a new variable called name.
Adobe Flash Platform. View Help PDF 5. Property Description followRedirects Specifies whether redirects are to be followed true , the default value or not false. All new URLRequest objects will use the specified values for these properties instead of the normal defaults: air. It is not supported in Flash Player. The credentials passed to the setLoginCredentialsForHost method are used for requests made in any application domain within the AIR application. URI schemes The standard URI schemes, such as the following, can be used in requests made from any security sandbox: http: and https: Use these for standard Internet URLs in the same way that they are used in a web browser.
URLLoader ; loader. Loading data from external documents When you build dynamic applications, it can be useful to load data from external files or from server-side scripts. URLRequest "params. To send the request using the POST method, set the request. Avoid using reserved words or language constructs as variable names in external data files, because doing so makes reading and debugging your code more difficult. If you are loading numeric data from external text files, convert the values into numeric values by using a top-level function, such as parseInt , parseFloat , and Number.
URLRequest ; request.
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