conn-network4.c
    conn-network4.c is a 10-sender, 1-receiver program. 10 threads use the same socket to send packets to one receiver. There are mutual exclustion issues here.

conn-network5.c
    This test files are similar to conn-network2.c but with 10 connections established between 2 machines and big packets going on in these connections concurrently. Make experiments with different values for BUFFER_SIZE. 
    
