TRANSMISSION SYSTEM WITH ABNORMALITY MONITOR FUNCTION, TERMINAL DEVICE WITH ABNORMALITY MONITOR FUNCTION, AND RECORDING MEDIUM STORING PROCESSING PROGRAM FOR TERMINAL DEVICE WITH ABNORMALITY MONITOR FUNCTION

摘要

PROBLEM TO BE SOLVED: To provide a transmission system equipped with an abnormality monitor function which can detect abnormality for each socket by sending monitor data for each socket in a prescribed cycle and monitoring a transmission line, with respect to socket communication carried out between terminal devices having the TCP/IP protocol. SOLUTION: This transmission system 1 is a transmission system which can monitor abnormality during socket communication between terminal devices having the TCP/IP protocol by connecting the terminal devices by a LAN and is characterized in that the terminal devices 2 and 3 send and receive transmit data to and from each other and also send and receive monitor data for each socket in a proscribed cycle and it decides that abnormality occurred in the line if the monitor data cannot be sent and received for a prescribed time to close and then reconnect the line.