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SERVER-SIDE ACTIONSCRIPT LANGUAGE REFERENCE FOR ADOBE MEDIA SERVER 5.0.1
Server-Side ActionScript Language Reference
Last updated 7/2/2013
Details
There are two types of shared objects, persistent and nonpersistent, and they have separate namespaces. This means
that a persistent and a nonpersistent shared object can have the same name and exist as two distinct shared objects.
Shared objects are scoped to the namespace of the application instance and are identified by a string. The shared object
names should conform to the URI specification.
You can also call SharedObject.get() to get a reference to a shared object that is in a namespace of another
application instance. This instance can be on the same server or on a different server and is called a proxied shared
object. To get a reference to a shared object from another instance, create a NetConnection object and use the
NetConnection.connect() method to connect to the application instance that owns the shared object. Pass the
NetConnection object as the
netConnection parameter of the SharedObject.get() method. The server-side script
must get a reference to a proxied shared object before there is a request for the shared object from any client. To do
this, call
SharedObject.get() in the application.onAppStart() handler.
If you call SharedObject.get() with a netConnection parameter and the local application instance already has a
shared object with the same name, the shared object is converted to a proxied shared object. All shared object messages
for clients that are connected to a proxied shared object are sent to the master instance.
If the connection state of the NetConnection object that was used as the netConnection parameter changes state from
connected to disconnected, the proxied shared object is set to idle and any messages received from subscribers are
discarded. The
NetConnection.onStatus() handler is called when a connection is lost. You can then reestablish a
connection to the remote instance and call
SharedObject.get(), which changes the state of the proxied shared object
from idle to connected.
If you call SharedObject.get() with a new NetConnection object on a proxied shared object that is already
connected, and if the URI of the new NetConnection object doesn’t match the current NetConnection object, the
proxied shared object unsubscribes from the previous shared object, sends a
clear event to all subscribers, and
subscribes to the new shared object instance. When a subscribe operation to a proxied shared object is successful, all
subscribers are reinitialized to the new state. This process lets you migrate a shared object from one application
instance to another without disconnecting the clients.
Updates received by proxied shared objects from subscribers are checked to see if the update can be rejected based on
the current state of the proxied shared object version and the version of the subscriber. If the change can be rejected,
the proxied shared object doesn’t forward the message to the remote instance; the reject message is sent to the
subscriber.
The corresponding client-side ActionScript method is SharedObject.getRemote().
Example
The following example creates a shared object named foo in the function onProcessCmd(). The function is passed a
parameter,
cmd, that is assigned to a property in the shared object.
function onProcessCmd(cmd){
// Insert code here.
var shObj = SharedObject.get("foo", true);
propName = cmd.name;
shObj.getProperty (propName, cmd.newAddress);
}
The following example uses a proxied shared object. A proxied shared object resides on a server or in an application
instance (called master) that is different from the server or application instance that the client connects to (called
proxy). When the client connects to the proxy and gets a remote shared object, the proxy connects to the master and
gives the client a reference to this shared object. The following code is in the main.asc file:
- Legal notices 2
- Contents 3
- Reference 4
- Application class 9
- Last updated 7/2/2013 10
- ByteArray class 36
- Client class 37
- Client.agent 40
- Client.audioSampleAccess 40
- Client.call() 41
- Client.checkBandwidth() 42
- Client.farAddress 43
- Client.farID 43
- Client.farNonce 43
- Client.getBandwidthLimit() 43
- Client.getStats() 44
- Client.id 45
- Client.introducePeer() 46
- Client.ip 46
- Client.nearAddress 47
- Client.nearID 47
- Client.nearNonce 47
- Client.onFarAddressChange() 47
- Client.onGroupLeave 47
- Client.onGroupJoin 48
- Client.pageUrl 49
- Client.ping() 49
- Client.potentialNearAddresses 50
- Client.protocol 50
- Client.protocolVersion 51
- Client.readAccess 51
- Client.referrer 53
- Client.remoteMethod() 53
- Client.reportedAddresses 54
- Client.__resolve() 55
- Client.secure 55
- Client.setBandwidthLimit() 55
- Client.uri 56
- Client.videoSampleAccess 56
- Client.virtualKey 57
- File class 58
- File constructor 60
- File.canAppend 61
- File.canRead 61
- File.canReplace 61
- File.canWrite 61
- File.close() 62
- File.copyTo() 62
- File.creationTime 63
- File.eof() 63
- File.exists 63
- File.flush() 63
- File.isDirectory 64
- File.isFile 64
- File.isOpen 64
- File.lastModified 64
- File.length 65
- File.list() 65
- File.mkdir() 65
- File.mode 66
- File.name 66
- File.open() 66
- File.position 67
- File.read() 68
- File.readAll() 68
- File.readByte() 68
- File.readBytes() 69
- File.readln() 69
- File.remove() 69
- File.renameTo() 70
- File.seek() 70
- File.toString() 71
- File.type 71
- File.write() 71
- File.writeAll() 72
- File.writeByte() 72
- File.writeBytes() 73
- File.writeln() 73
- GroupSpecifier class 74
- GroupSpecifier.makeUnique() 78
- GroupSpecifier.postingEnabled 79
- GroupSpecifier.routingEnabled 80
- GroupControl 81
- GroupControl.addNeighbor() 82
- GroupControl.addMemberHint() 82
- GroupControl.groupspecDigest 82
- LoadVars class 83
- LoadVars constructor 84
- LoadVars.addRequestHeader() 84
- LoadVars.contentType 85
- LoadVars.decode() 85
- LoadVars.getBytesLoaded() 86
- LoadVars.getBytesTotal() 86
- LoadVars.load() 86
- LoadVars.loaded 87
- LoadVars.onData() 88
- LoadVars.onHTTPStatus() 88
- LoadVars.onLoad() 90
- LoadVars.send() 90
- Log class 91
- Log constructor 92
- Log.onLog() 92
- MulticastStreamInfo class 93
- MulticastStreamIngest class 97
- MulticastStreamIngest.close() 98
- NetConnection class 99
- NetConnection constructor 100
- NetConnection.addHeader() 101
- NetConnection.call() 101
- NetConnection.close() 102
- NetConnection.connect() 102
- NetConnection.farID 104
- NetConnection.farNonce 104
- NetConnection.isConnected 104
- NetConnection.nearID 105
- NetConnection.nearNonce 105
- NetConnection.objectEncoding 105
- NetConnection.onStatus() 106
- NetGroup class 108
- NetGroup class constructor 109
- NetGroup.addMemberHint() 109
- NetGroup.addNeighbor() 110
- NetGroup.close() 111
- NetGroup.estimatedMemberCount 112
- NetGroup.info 113
- NetGroup.localCoverageTo 113
- NetGroup.localCoverageFrom 113
- NetGroup.onStatus() 113
- NetGroup.post() 114
- NetGroup.receiveMode 115
- NetGroup.sendToAllNeighbors() 116
- NetGroup.sendToNearest() 116
- NetGroup.sendToNeighbor() 116
- NetGroupInfo class 117
- NetGroupReceiveMode class 118
- NetGroupReceiveMode.EXACT 119
- NetGroupReceiveMode.NEAREST 119
- NetGroupSendMode class 120
- NetGroupSendResult class 120
- NetStream class 121
- NetStream class constructor 122
- NetStream.attach() 123
- NetStream.bufferTime 123
- NetStream.farID 124
- NetStream.multicastInfo 125
- NetStream.nearNonce 126
- NetStream.onStatus() 126
- NetStream.publish() 127
- NetStream.send() 128
- NetStream.setBufferTime() 129
- NetStream.time 129
- ProxyStream class 130
- ProxyStream.onStatus() 131
- ProxyStream.proxyFrom() 133
- ProxyStream.stop() 133
- SharedObject class 134
- SharedObject.autoCommit 136
- SharedObject.clear() 136
- SharedObject.close() 137
- SharedObject.commit() 137
- SharedObject.flush() 137
- SharedObject.get() 138
- SharedObject.getProperty() 140
- SharedObject.handlerName() 141
- SharedObject.isDirty 141
- SharedObject.lock() 142
- SharedObject.mark() 142
- SharedObject.name 143
- SharedObject.onStatus() 144
- SharedObject.onSync() 144
- SharedObject.purge() 146
- SharedObject.resyncDepth 146
- SharedObject.send() 147
- SharedObject.setProperty() 147
- SharedObject.size() 148
- SHA256 class 149
- SOAPCall class 150
- SOAPFault class 151
- SOAPFault.detail 152
- SOAPFault.faultactor 152
- SOAPFault.faultcode 152
- SOAPFault.faultstring 152
- Stream class 153
- Stream.bufferTime 154
- Stream.clear() 154
- Stream.destroy() 155
- Stream.flush() 156
- Stream.generateCCInfo 156
- Stream.get() 156
- Stream.getOnMetaData() 158
- Stream.length() 158
- Stream.liveEvent 159
- Stream.maxQueueDelay 159
- Stream.maxQueueSize 160
- Stream.name 160
- Stream.onPlayStatus() 160
- Stream.onStatus() 161
- Stream.play() 162
- Stream.playFromGroup() 166
- Stream.publishQueryString 168
- Stream.receiveAudio 170
- Stream.receiveVideo 170
- Stream.record() 170
- Stream.time 172
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