https://community.hpe.com/t5/operating-system-hp-ux/tcp-client-server-question/m-p/2765129#M583603 Hi All,<BR /><BR />I do not know how to check if my program (TCP client written in C) is still connected to the TCP server running on a other machine. In other words if server is still running. In my situation server does not send any "keep alive" messages. For example NETSTAT utility shows column named (state). Which function can I use to get state of the connection?<BR /><BR />Many thanks. Tue, 16 Jul 2002 15:34:43 GMT Wojtek Dudczak 2002-07-16T15:34:43Z https://community.hpe.com/t5/operating-system-hp-ux/tcp-client-server-question/m-p/2765129#M583603 Hi All,<BR /><BR />I do not know how to check if my program (TCP client written in C) is still connected to the TCP server running on a other machine. In other words if server is still running. In my situation server does not send any "keep alive" messages. For example NETSTAT utility shows column named (state). Which function can I use to get state of the connection?<BR /><BR />Many thanks. Tue, 16 Jul 2002 15:34:43 GMT https://community.hpe.com/t5/operating-system-hp-ux/tcp-client-server-question/m-p/2765129#M583603 Wojtek Dudczak 2002-07-16T15:34:43Z https://community.hpe.com/t5/operating-system-hp-ux/tcp-client-server-question/m-p/2765130#M583604 hi,<BR /><BR />may be lsof is useful in this case.<BR /><BR />#lsof -i tcp<BR /><BR />regds<BR /> Tue, 16 Jul 2002 15:40:00 GMT https://community.hpe.com/t5/operating-system-hp-ux/tcp-client-server-question/m-p/2765130#M583604 V. V. Ravi Kumar_1 2002-07-16T15:40:00Z