The stream storage can also be responsive to the application processing logic to access streams stored by the connection servicing logic. The stream storage can also be responsive to the programmable parser to access streams stored by the connection servicing logic. The stream storage can include function-specific hardware logic. The stream storage can be operative to respond to access requests that include a stream identifier and a stream sequence identifier. The unit can further include stream storage responsive to the connection servicing logic and operative to store contents of a plurality of transport-layer packets received by the connection servicing logic for a same connection. The connection servicing logic can include a stream extension command input responsive to an output of the programmable parser. The application processing logic and the stream insertion logic can be operative to insert cookie streams into a data flow transmitted by the connection servicing logic. The stream insertion logic can be responsive to a queue of streams to be assembled and transmitted by the connection servicing logic. The stream modification logic can include stream insertion logic. The stream modification logic can include stream deletion logic. The application processing logic can include stream modification logic. The transport layer connection flow adjustment logic can be operative to adjust an advertised window parameter. The connection servicing logic can include a downstream flow control input path responsive to a downstream throughput signal path and transport layer connection speed adjustment logic responsive to the downstream flow control input path. The connection servicing logic can include logic sufficient to establish a connection autonomously. The unit can further include a packet-based physical network communications interface having an output operatively connected to an input of the connection servicing logic. The connection servicing can logic include a TCP/IP state machine substantially completely implemented with function-specific hardware. The connection servicing logic can include a transport-level state machine substantially completely implemented with function-specific hardware. The programmable parser includes programmable parsing logic that is responsive to user-defined policy rules. The programmable parser can include an HTTP parser.
The programmable parser can include general-purpose programmable parsing logic. The programmable parser can include dedicated, function-specific parsing hardware. The message-passing system can operate with a higher priority queue and a lower priority queue, with at least portions of messages in the higher priority queue being able to pass at least portions of messages in the lower priority queue. In preferred embodiments, the unit can further include interaction-defining logic operative to define different interactions between the connection servicing logic, the parser, and the application processing logic, the unit can further include a message-passing system to enable the interactions defined by the interaction-defining logic.
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