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#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <stdbool.h>
#include <fcntl.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <netinet/in.h>
// int listen(int sockfd, int backlog);
#define BACKLOG 2
int main () {
int sockfd;
int gai_result;
int bind_result;
struct addrinfo *res;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
gai_result = getaddrinfo(NULL, "62000", &hints, &res);
if (gai_result != 0) {
fprintf(stderr, "gai_result: %d\n", gai_result);
exit(1);
}
sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (sockfd == -1) {
fprintf(stderr, "sockfd: %d\n", sockfd);
exit(1);
}
bind_result = bind(sockfd, res->ai_addr, res->ai_addrlen);
if (bind_result != 0) {
fprintf(stderr, "bind_result: %d\n", bind_result);
exit(1);
}
listen(sockfd, BACKLOG);
socklen_t addr_size;
struct sockaddr_storage their_addr;
addr_size = sizeof(their_addr);
int newfd;
newfd = accept(sockfd, (struct sockaddr *)&their_addr, &addr_size);
if (newfd == -1) {
fprintf(stderr, "newfd: %d\n", newfd);
exit(1);
}
char *msg = "Server says hi!\n";
int len;
int bytes_sent;
len = strlen(msg);
bytes_sent = send(newfd, msg, len, 0);
int rlen = 1000;
int recv_ret;
size_t bytes_recieved = 0;
while(true) {
char recvmsg[rlen];
recv_ret = recv(newfd, recvmsg, rlen, 0);
bytes_recieved = bytes_recieved+recv_ret;
if (recv_ret < 1) {
break;
}
recvmsg[recv_ret] = '\0';
fprintf(stdout, "%s", recvmsg);
memset(&recvmsg, 0, (size_t)rlen);
}
fprintf(stdout, "bytes recieved: %ld\nbytes sent: %d\n", bytes_recieved, bytes_sent);
return 0;
}
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