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XML-RPC XML-RPC is the second request format supported by Flickr. XML-RPC uses HTTP as the transport and XML for encoding. In XML-RPC, the method parameters are wrapped in a XML document and POST-ed to the XML-RPC endpoint, in this case http://api.flickr.com/services/xmlrpc/. A XML-RPC request will have this format: <methodCall> <methodName>flickr.test.echo</methodName> <params> <param> <value> <struct> <member> <name>api_key</name> <value><string>..your API key..</string></value> </member> </struct> </value> </param> </params> </methodCall> If the method takes more than one parameter, you will have to repeat the <member> structure for each parameter; you can find detailed instructions regarding the packaging of complex datatypes at www.xmlrpc.com. Here is how to implement this call in Actionscript: var request:XML; var response:XML; request=new XML(); response = new XML(); response.onLoad=function(success:Boolean){ trace(success); trace(this.toString()); } request.xmlDecl = '<?xml version="1.0"?>'; request.parseXML("<methodCall><methodName>flickr.test.echo</methodName><params> <param><value><struct><member><name>api_key</name><value>..your API key..</value></member></struct></value></param></params></methodCall>"); request.sendAndLoad("http://api.flickr.com/services/xmlrpc/", response); Since this is a HTTP POST operation, I have to use the sendAndLoad method of the XML object. Developer Matt Shaw is behind an open source project that provides a XML-RPC library for Actionscript; an introduction can be found at http://xmlrpcflash.mattism.com/, or you can download the library (more details can be found here). Using this library, the call to the echo function shown above would look like this: import com.mattism.http.xmlrpc.Connection; import com.mattism.http.xmlrpc.ConnectionImpl; onLoadListing = function( response:Array ){ trace("Found the following objects:"); var i:Number; for (i=0; i<response.length; i++){ trace(i+". "+url+response[i]); } }; var url:String = "http://api.flickr.com/services/xmlrpc/"; var c:Connection = new ConnectionImpl(); c.setUrl(url); c.onLoad = onLoadListing; c.addParam( { api_key:'...your API key...' }, "struct"); c.call("flickr.test.echo");

The MidiWeb consists of a server/client framework using TCP/IP to connect, receive and send midi data. It allows users to connect unlimited midi devices either locally and/or over the internet and send realtime data to each other. Since MidiWeb uses a simple protocol and MidiWeb client applications are not limited to hardware midi devices. Any language that supports socket connections can be used to develop applications for it including Macromedia Flash. The MidiWeb project is released using the GNU GPL license. Also the MidiWebServer and MidiWebClient are written in Python and will run on most platforms. (e.g. Windows, Mac, Unix)

from SimpleXMLRPCServer import SimpleXMLRPCServer,SimpleXMLRPCRequestHandler class ExtendedXMLRPCRequestHandler(SimpleXMLRPCRequestHandler): def do_GET(self): #only allow a request for the crossdomain file #this can be changed to support GETs of any file if needed if self.path != '/crossdomain.xml': self.send_response(403) self.log_request(403) return #open the crossdomain file and read its contents f = file('crossdomain.xml', 'r') msg = f.read() f.close() #write the data to the socket along with valid HTTP headers res = 'HTTP/1.0 200 OK\r\nDate: %s\r\n\r\n%s' % \ (self.date_time_string(),msg) self.wfile.write(res) self.log_request(200) class EchoClass: def echo(self, data): return data #create an instance of the class s = EchoClass() #create the server on localhost server = SimpleXMLRPCServer(('', 8000), ExtendedXMLRPCRequestHandler) #register the instance as a web service server.register_instance(s) #start accepting requests server.serve_forever()