Network Communication Using UICI

The new UICI library has three parts:

• A restart library containing utility I/O routines.
  
• A name resolution library for converting between host and and IP address.
• The UICI library for TCP communication

Look at the client, the serial server, and the parent-server.

Several version of the name resolution functions are given.
To compile the a thread-safe version use -DREENTRANCY=REENTRANT_POSIX.

For example, to compile the serial server under Solaris use:
cc -DREENTRANCY=REENTRANT_POSIX -o server server.c restart.c uiciname.c uici.c -lsocket -lnsl

To compile under Linux, just remove the -lsocket.
To compile under MAC OS X remove both -lsocket and -lnsl.

Server Strategies

1. Serial server, server.c: One request at a time
2. Parent server, serverp.c: Create a process to handle each request
3. Threaded server: Create a thread to handle each request
4. Process Worker Pool: Create n processes, each calls u_accept
5. Thread Worker Pool: Create n threads, each calls u_accept
6. Threaded Worker Pool with Bounded Buffer:
   
   • Original process creates n threads and buffer of size m
   • Original process accepts connections, puts communication file descriptors in buffer
   • Each thread removes a file descriptor from buffer and handles a connection

Project Overview

• Compare serial server and two other alternatives
• Do a preliminary test with the serial server
• Design a full factorial experiment (Do not perform this experiment.)
• Perform a 2^k experiment to see which factors are important
• Do a full factorial experiment with a subset of the factors