Generic TCP client

NOTE: This code is available on the CS machines in 
	~hollingd/public.html/netprog/code/generictcp

This is a client that uses the select() system call to watch two
file descriptors for intput: a tcp socket and STDIN. Anything read
from STDIN is sent to the socket, and anything that is read from the socket
is sent to STDOUT. This is an example of using select(), and is also
useful for testing TCP servers - just make a text file that contains
the request and pipe it to this program.

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The client attempts to connect to the TCP indicated by the command line
parameters. The parameters are the IP address or hostname
and the port number. For example, to tell the client that the server
is running on the machine www.cs.rpi.edu port 80
the client should be started like this:

tcpclient www.cs.rpi.edu 80

You could also put a request in a file named "req", and then do this:

cat req | tcpclient www.cs.rpi.edu 80

Questions should be sent to netprog@cs.rpi.edu