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CST8165 Lab Attendance Exercise #86 - Week 6
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-Ian! D. Allen - idallen@idallen.ca - www.idallen.com

A. This quick exercise is to register your attendance in this lab this week.
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Give me a quick demo of your scanner.  I will test its error detection
features.  When we are done, submit a file containing a brief summary
of the demo and testing as #86 (for Week 6):

    $ ~alleni/bin/cstsubmit 86 comments.txt

No labels or documentation are needed for this file.

B. Preparation for next lab:
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Using the PDL from Week 4 and the lectures, modify the client.c program:

1. comment out the code that reads from the server
2. make the client loop sending lines to the server

No forking is necessary - simply loop sending input to the server.

When the loop breaks (one of three conditions), print a debug message
giving the reason why.

Run "netcat" in "listen" mode to receive lines from the client.  

Connect to the netcat process with your client, send a few lines,
then kill the netcat process.  Try to send more lines with the client.
Instead of getting an error return from your write/send syscall, your
client process will die receiving SIGPIPE for writing on a closed socket.

Modify your client to ignore the SIGPIPE signal.  Re-run the above test
and note that you now get a proper error return from your write/send
syscall, with errno set to "Broken pipe".

You will need this for the next lab.