#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>

#define MYPORT 1100

int main() {
    int sfd, connfd, amt = 0;
    struct sockaddr_in addr;
    char buffer[1024];
    
    if((sfd=socket(PF_INET, SOCK_STREAM, 0)) < 0) {
        perror("Socket failed");
        exit(EXIT_FAILURE);
    }

    memset(&addr, 0, sizeof(addr));
    addr.sin_family = AF_INET;
    addr.sin_port = htons(MYPORT);
    addr.sin_addr.s_addr = INADDR_ANY;

    if(bind(sfd, (struct sockaddr *)&addr, sizeof(addr)) < 0){
        perror("Bind failed");
        exit(EXIT_FAILURE);
    }
    if(listen(sfd, 10) < 0) {
        perror("Listen failed");
        exit(EXIT_FAILURE);
    }
    if((connfd=accept(sfd, NULL, NULL)) < 0)
    {
        perror("Accept failed");
        exit(EXIT_FAILURE);
    }

    strcpy(buffer, "Hello there!\n");
    while(amt < strlen(buffer)) {
        int ret = send(connfd, buffer+amt, strlen(buffer)-amt, 0);
        if(ret < 0) {
            perror("Send failed");
            exit(EXIT_FAILURE);
        }
        amt += ret;
    }
    close(connfd);
    close(sfd);
    return 0;
}