System for automatically compressing and decompressing data for sender and receiver processes upon determination of a common compression/decompression method understood by both sender and receiver processes

Claim 1

In a network of computer systems comprising a sender computer system having a sender process and a receiver computer system having a receiver process, wherein said sender process provides data to said receiver process, a computer implemented method for transferring said data from said sender process to said receiver process, said method comprising the steps of: a) providing a sender list of compression/decompression methods understood by said sender computer system by a first system service of said sender computer system to a second system service of said receiver computer system while establishing connection between said sender computer system to said receiver computer system on behalf of said sender process, said sender list being provided in order of sender preference; providing a receiver list of compression/decompression methods understood by said receiver computer system by said second system service to said first system service in response to said provided sender list while establishing connection between said receiver computer system and said sender computer system, said receiver list being provided in order of receiver preference; deducing individually a compression/decompression method understood by both said sender and receiver computer systems in accordance to an identical predetermined manner using said sender and receiver lists provided by said first as well as said second system service, based on sender preference dominance, without further communication between said first and said second system services for the purpose of deducing said compression/decompression method understood by both; b) logging said determined compression/decompression method on said sender and receiver computer systems by said first and second system services respectively; c) compressing automatically said data to be transferred in accordance to said logged compression/decompression method by a third system service of said sender computer system before transmission, as an integral part of transmitting said data from said sender computer system to said receiver computer system, in response to a data sending request of said sender process to said third system service; and d) decompressing automatically said data in accordance to said logged compression/decompression method by a fourth system service of said receiver computer system after receiving said data from said sender computer system, but before said received data is given to said receiver process, as an integral part of receiving and giving said data to said receiver process, in response to a data reading request of said receiver process.