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Class Summary Class Description BusinessHandler This class is to be implemented in order to allow Business actions according to FTP serviceFtpInitializer Pipeline factory for Control command connectionNetworkHandler Main Network Handler (Control part) implementing RFC 959, 775, 2389, 2428, 3659 and supports XCRC and XMD5 commands.
Package org.waarp.ftp.core.control Description
Classes implementing Control connections.
The internal logic is the following:
The internal logic is the following:
- When a connection is opened for control network: It first creates the default startup command (ConnectionCommand), then it answers it is ok to accept identification (which is implied by ConnectionCommand).
- Each time a command is received:
- Parsing the command in order to find the corresponding class that implements it.
- Checking if the command is legal now such that no transfer is currently running except if is a special command (like QUIT or ABORT).
- Checking if the command is legal from workflow that is to say the previous command allows the usage of the current command (for instance, no transfer command is allowed if the authentication is not finished).
- Running the command with executing a pre and post operation on business handler.
- Making the final answer of the command (in some cases this is a partial answer like ready to transfer)
- When an exception occurs the connection will be closed.
- When the connection is closed all attributes are cleaned.