added way to exit client

src/chat/client/main.c

@@ -44,6 +44,8 @@ int main(void)
         printf("%s\n", line);
 
         send_socket(line, listen_socket);
+
+        if (strcmp(line, "!exit") == 0) break; //USER REQUESTED PROGRAM EXIT
     }
 
     free(line); //TODO: Unreachable; add exit

src/chat/server/main.c

@@ -18,6 +18,8 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 #include <why2/chat/common.h>
 
+#include <unistd.h>
+
 char *read_socket(int socket);
 void *communicate_thread(void *arg);
 
@@ -68,11 +70,14 @@ void *communicate_thread(void *arg)
 
         if (received == NULL) return NULL; //FAILED; EXIT THREAD
 
+        if (strcmp(received, "!exit") == 0) break; //USER REQUESTED PROGRAM EXIT
+
         printf("Received:\n%s\n\n", received);
 
         why2_deallocate(received);
     }
 
+    close(*((int*) arg));
     return NULL;
 }