remove magic number

server.c

@@ -136,7 +136,7 @@ void readData(int clientSocket) {
       printf("Got stuff: %i\n", msgSize);
       printf("%s\n", buffer);
     }
-  } while (msgSize == 256);
+  } while (msgSize == BUFFER_LENGTH);
   printf("Data received: %s\n", buffer);
 }