Sockets in C++: Connection Refused (macOS) - c++

Question

I have an odd issue. I have been attempting to learn to use network sockets in C/C++, and I'm currently having trouble understanding why my server code does not work. I have followed a tutorial's code almost to a T, and although the example code functions fine, my code does not. I can telnet localhost 5000 to the example program just fine, but telnet simply gives me connection refused when I test my server code.
Here is my code:
#include <iostream>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
using namespace std;
int main()
{
// declare int socket descriptor and call socket() to assign to it
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd == -1)
perror("Error on socket creation.");
// declare address struct
struct sockaddr_in serv_addr;
memset(&serv_addr, 0, sizeof serv_addr);
// set values in address struct
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(5000);
// need to cast sockaddr_in to sockaddr struct
bind(sockfd, (struct sockaddr*)&serv_addr, sizeof serv_addr);
// listen on socket with num of allowed connections
if (listen(sockfd, 10) == -1)
perror("Error on listen");
int connfd;
char msg [1025];
memset(msg, 0, sizeof msg);
while (1)
{
connfd = accept(sockfd, (struct sockaddr*)NULL, NULL);
strcpy(msg, "Message lol");
write(connfd, msg, strlen(msg));
close(connfd);
sleep(1);
}
return 0;
}
This is example that functions as expected: https://pastebin.com/CG9ZWz49
And this is the tutorial I got the example from:
https://www.codeproject.com/articles/586000/networking-and-socket-programming-tutorial-in-c
Any help would be greatly appreciated. Thanks.