System and method employing intelligent feedback mechanisms for flow control on a client device

A non-transitory machine-readable medium embodied with a program code for efficiently transmitting packets which, when executed by a processor, causes the processor to perform a plurality of operations comprising:

• receiving a packet to be transmitted at a network socket on a client device;
• calculating a flow hash value for the packet, the flow hash value associating the packet with a particular network flow, the flow hash value usable to track the packet and other packets associated with the particular network flow;
• receiving feedback for the flow from a network layer of the client device beneath the socket, the flow being identified using the flow hash value, the feedback indicating conditions associated with the flow on a network link;
• and
• performing flow control operations on the flow responsive to the feedback for the flow;
• wherein the flow control operations comprise tagging a socket associated with the flow as flow controlled and notifying an application associated with the flow of a flow controlled state.