diff --git a/Email/.gitkeep b/Email/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/Email/Makefile b/Email/Makefile
deleted file mode 100644
index a0ddb3507c0fb83c8f97bc51ff5471a98c6ebf94..0000000000000000000000000000000000000000
--- a/Email/Makefile
+++ /dev/null
@@ -1,21 +0,0 @@
-# Protocoale de comunicatii
-# Laborator 11 - E-mail
-# Makefile
-
-CFLAGS = -Wall -g
-
-IP_SERVER = 127.0.0.1
-NUME_FISIER = file.txt
-
-default: send_mail
-
-send_mail: send_mail.c
- gcc $(CFLAGS) send_mail.c -o send_mail
-
-run: send_mail
- ./send_mail ${IP_SERVER} ${NUME_FISIER}
-
-.PHONY: clean
-
-clean:
- rm -f send_mail
diff --git a/Email/file.txt b/Email/file.txt
deleted file mode 100644
index c63f99db70349a989e08dbdd05f81f308d7b5039..0000000000000000000000000000000000000000
--- a/Email/file.txt
+++ /dev/null
@@ -1 +0,0 @@
-This is an attachment.
diff --git a/Email/send_mail.c b/Email/send_mail.c
deleted file mode 100644
index 2c2979b01700bc6e4468704b91681c0f77e91589..0000000000000000000000000000000000000000
--- a/Email/send_mail.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * Protocoale de comunicatii
- * Laborator 11 - E-mail
- * send_mail.c
- */
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-
-#define SMTP_PORT 25
-#define MAXLEN 500
-
-/**
- * Citeste maxim maxlen octeti de pe socket-ul sockfd in
- * buffer-ul vptr. Intoarce numarul de octeti cititi.
- */
-ssize_t read_line(int sockd, void *vptr, size_t maxlen)
-{
- ssize_t n, rc;
- char c, *buffer;
-
- buffer = vptr;
-
- for (n = 1; n < maxlen; n++) {
- if ((rc = read(sockd, &c, 1)) == 1) {
- *buffer++ = c;
-
- if (c == '\n') {
- break;
- }
- } else if (rc == 0) {
- if (n == 1) {
- return 0;
- } else {
- break;
- }
- } else {
- if (errno == EINTR) {
- continue;
- }
-
- return -1;
- }
- }
-
- *buffer = 0;
- return n;
-}
-
-/**
- * Trimite o comanda SMTP si asteapta raspuns de la server. Comanda
- * trebuie sa fie in buffer-ul sendbuf. Sirul expected contine
- * inceputul raspunsului pe care trebuie sa-l trimita serverul
- * in caz de succes (de exemplu, codul 250). Daca raspunsul
- * semnaleaza o eroare, se iese din program.
- */
-void send_command(int sockfd, const char sendbuf[], char *expected)
-{
- char recvbuf[MAXLEN];
- int nbytes;
- char CRLF[2] = {13, 10};
-
- printf("Trimit: %s\n", sendbuf);
- write(sockfd, sendbuf, strlen(sendbuf));
- write(sockfd, CRLF, sizeof(CRLF));
-
- nbytes = read_line(sockfd, recvbuf, MAXLEN - 1);
- recvbuf[nbytes] = 0;
- printf("Am primit: %s", recvbuf);
-
- if (strstr(recvbuf, expected) != recvbuf) {
- printf("Am primit mesaj de eroare de la server!\n");
- exit(-1);
- }
-}
-
-int main(int argc, char **argv) {
- int sockfd;
- int port = SMTP_PORT;
- struct sockaddr_in servaddr;
- char server_ip[INET_ADDRSTRLEN];
- char sendbuf[MAXLEN];
- char recvbuf[MAXLEN];
-
- if (argc != 3) {
- printf("Utilizare: ./send_msg adresa_server nume_fisier\n");
- exit(-1);
- }
-
- strncpy(server_ip, argv[1], INET_ADDRSTRLEN);
-
- // TODO 1: creati socket-ul TCP client
-
- // TODO 2: completati structura sockaddr_in cu
- // portul si adresa IP ale serverului SMTP
-
- // TODO 3: conectati-va la server
-
- // se primeste mesajul de conectare de la server
- read_line(sockfd, recvbuf, MAXLEN -1);
- printf("Am primit: %s\n", recvbuf);
-
- // se trimite comanda de HELO
- sprintf(sendbuf, "HELO localhost");
- send_command(sockfd, sendbuf, "250");
-
- // TODO 4: trimiteti comanda de MAIL FROM
-
- // TODO 5: trimiteti comanda de RCPT TO
-
- // TODO 6: trimiteti comanda de DATA
-
- // TODO 7: trimiteti e-mail-ul (antete + corp + atasament)
-
- // TODO 8: trimiteti comanda de QUIT
-
- // TODO 9: inchideti socket-ul TCP client
-
- return 0;
-}
diff --git a/dns/.gitkeep b/dns/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/dns/Makefile b/dns/Makefile
deleted file mode 100644
index 6aba007d48e54f4a0d32ca05d48c30a1c3aa7b60..0000000000000000000000000000000000000000
--- a/dns/Makefile
+++ /dev/null
@@ -1,14 +0,0 @@
-# Protocoale de comunicatii
-# Laborator 11 - DNS
-# Makefile
-
-CFLAGS = -Wall -g
-
-default: dns
-
-dns: dns.c
-
-.PHONY: clean
-
-clean:
- rm -f dns
diff --git a/dns/dns.c b/dns/dns.c
deleted file mode 100644
index 3a689c79a13d323b4dc75724af0271cf684728c4..0000000000000000000000000000000000000000
--- a/dns/dns.c
+++ /dev/null
@@ -1,65 +0,0 @@
-// Protocoale de comunicatii
-// Laborator 9 - DNS
-// dns.c
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <arpa/inet.h>
-
-int usage(char* name)
-{
- printf("Usage:\n\t%s -n <NAME>\n\t%s -a <IP>\n", name, name);
- return 1;
-}
-
-// Receives a name and prints IP addresses
-void get_ip(char* name)
-{
- int ret;
- struct addrinfo hints, *result, *p;
-
- // TODO: set hints
-
- // TODO: get addresses
-
- // TODO: iterate through addresses and print them
-
- // TODO: free allocated data
-}
-
-// Receives an address and prints the associated name and service
-void get_name(char* ip)
-{
- int ret;
- struct sockaddr_in addr;
- char host[1024];
- char service[20];
-
- // TODO: fill in address data
-
- // TODO: get name and service
-
- // TODO: print name and service
-}
-
-int main(int argc, char **argv)
-{
- if (argc < 3) {
- return usage(argv[0]);
- }
-
- if (strncmp(argv[1], "-n", 2) == 0) {
- get_ip(argv[2]);
- } else if (strncmp(argv[1], "-a", 2) == 0) {
- get_name(argv[2]);
- } else {
- return usage(argv[0]);
- }
-
- return 0;
-}