Method for maintaining TCP (Transmission Control Protocol) stream table structure and unordered buffer area

The invention provides a method for maintaining a TCP (Transmission Control Protocol) stream table structure and an unordered buffer area. According to the TCP connecting management system, connecting information and unordered connecting information are recorded by an off-chip memory, the same memory is allocated for each connection and a memory space address of each connection is placed in an address pool; when the connection is established or the unordered phenomenon is generated, an address is taken out of the address pool to use; and when the connection is released, the address occupied by the connection is recovered to the address pool. According to the method, the memory space is fully utilized and waste is avoided; and the memory space is released after being used up and can be used by other connections.