created structs Client and Server

src/network/encrypted_sockets.c

@@ -15,6 +15,8 @@ void EncryptedSocketTCP_construct(EncryptedSocketTCP* ptr,
 }
 
 void EncryptedSocketTCP_destroy(EncryptedSocketTCP* ptr){
+    if(!ptr)
+        return;
     socket_close(ptr->sock);
     free(ptr->recv_buf.data);
     free(ptr->send_buf.data);
@@ -161,6 +163,9 @@ void EncryptedSocketUDP_construct(EncryptedSocketUDP* ptr,
 }
 
 void EncryptedSocketUDP_destroy(EncryptedSocketUDP* ptr){
+    if(!ptr)
+        return;
+
     socket_close(ptr->sock);
     free(ptr->recv_buf.data);
     free(ptr->send_buf.data);

src/network/internal.h

@@ -21,6 +21,7 @@
     #include <sys/socket.h>
     #include <sys/time.h>
     #include <netinet/in.h>
+    #include <netinet/tcp.h>
     #include <arpa/inet.h>
     #include <netdb.h>
     #include <unistd.h>