C++: client connects without server - c++

Question

I am trying to make a C++ server-client communication program. Currently, both server and client are on localhost.
When I run server.cpp, it waits at "Listening...", as expected, and does not continue further till I don't run client.cpp. When client is run, server prints "Connected" and both server and client end.
But when I run client.cpp only, it prints "Connecting..." and then "Connected" after one second, even if server.cpp is not running, and specified port is not open.
I have triple checked both codes, tried them many times, also checked open ports before running only client, changed port many times, but nothing worked. Why does client say "Connected" even when server is not running?
server.cpp:
#include <cstdio>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#define PORT 11056
int main(int argc, char** argv) {
int sock = socket(AF_INET, SOCK_STREAM, PF_UNSPEC);
if (sock == -1) {
printf("E) Socket creation\n");
return 1;
}
struct sockaddr_in server, client;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = PORT;
server.sin_family = AF_INET;
int binded = bind(sock, (struct sockaddr *)&server, sizeof(server));
if (binded == -1) {
printf("E) Binding\n");
return 1;
}
printf("4) Listening...\n");
listen(sock, 5);
int new_sock = accept(sock, (struct sockaddr *)&client, (socklen_t *)sizeof(client));
printf("5) Connected\n");
shutdown(sock, SHUT_RDWR);
close(new_sock);
close(sock);
printf("EXIT\n");
return 0;
}
client.cpp
#include <cstdio>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <arpa/inet.h>
#define PORT 11056
int main(int argc, char** argv) {
int sock = socket(AF_INET, SOCK_STREAM, PF_UNSPEC);
if(sock == -1) {
printf("Error creating socket\n");
return 1;
}
struct sockaddr_in client;
client.sin_port = PORT;
client.sin_family = AF_INET;
client.sin_addr.s_addr = inet_addr("127.0.0.1");
printf("3) Connecting...\n");
connect(sock, (struct sockaddr *)&client, sizeof(client));
printf("4) Connected\n");
close(sock);
printf("EXIT");
return 0;
}