Talking to network sockets
A Connected Socket Adapter (CSA) component talks to a network server socket. Data is sent to and received from the socket via this component's inboxes and outboxes. A CSA is effectively a wrapper for a socket.
Most components should not need to create CSAs themselves. Instead, use components such as TCPClient to make an outgoing connection, or TCPServer or SimpleServer to be a server that responds to incoming connections.
See source code for TCPClient to see how Connected Socket Adapters can be used.
A CSA is usually created either by a component such as TCPClient that wants to establish a connection to a server; or by a primary listener socket - a component acting as a server - listening for incoming connections from clients.
The socket should be set up and passed to the constructor to make the CSA.
Incoming data, read by the CSA, is sent out of its "outbox" outbox as strings containing the received binary data. Send data by sending it, as strings, to the "inbox" outbox.
The CSA expects to be wired to a component that will notify it when new data has arrived at its socket (by sending an Axon.Ipc.status message to its "ReadReady" inbox. This is to allow the CSA to sleep rather than busy-wait or blocking when waiting for new data to arrive. Typically this is the Selector component.
This component will terminate (and close its socket) if it receives a producerFinished or shutdownMicroprocess message on its "control" inbox.
When this component terminates, it sends a socketShutdown(socket) message out of its "CreatorFeedback" outbox and a shutdownCSA((selfCSA,self.socket)) message out of its "signal" outbox.
The message sent to "CreatorFeedback" is to notify the original creator that the socket is now closed and that this component should be unwired.
The message sent to the "signal" outbox serves to notify any other component involved - such as the one feeding notifications to the "ReadReady" inbox (eg. the Selector component).
ConnectedSocketAdapter(socket) -> new CSA component wrapping specified socket
Component for communicating with a socket. Send to its "inbox" inbox to send data, and receive data from its "outbox" outbox.
"ReadReady" inbox must be wired to something that will notify it when new data has arrived at the socket.
Methods defined here
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
Internal only function, used for recieving data, and handling EAGAIN style retry scenarios gracefully
Internal only function, used for sending data, and handling EAGAIN style retry scenarios gracefully
Check for producerFinished message and shutdown in response
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-- Automatic documentation generator, 05 Jun 2009 at 03:01:38 UTC/GMT
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