[cs631apue] telnet not detecting socket close

[jphillip]

Hi,  I am able to connect to my server via telnet and send some data.  
After the data is received by the server I print it out and call 
close(int) on the client socket file descriptor from which the data was 
read.  I would expect this to cause telnet to report "Connection closed 
by foreign host" but it does not.  I tried setting the socket option 
SO_LINGER timeout to 0 thinking maybe telnet did something so the server 
thinks the client still had data to transmit but this had no effect.  
Why isn't the socket closing?  Thanks!

Justin