Pra compilar e executar 3 servidores e um cliente:

gcc -pthread -o client dropboxClient.c -lssl -lcrypto

gcc -pthread -o server dropboxServer.c -lssl -lcrypto

./server 8585 127.0.0.1 8501 127.0.0.1 9001

./server 9000 127.0.0.1 8586 127.0.0.1 8501

./server 8500 127.0.0.1 8586 127.0.0.1 9001

./client eduardo 127.0.0.1 8585 127.0.0.1 9000 127.0.0.1 8500