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#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <strings.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include "common.h"
int main()
{
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd == -1)
panic("socket creation error");
struct sockaddr_in serv_addr;
bzero(&serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
serv_addr.sin_port = htons(8888);
if (bind(sockfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) == -1)
panic("socket bind error");
if (listen(sockfd, SOMAXCONN) == -1)
panic("socket listen error");
struct sockaddr_in clnt_addr;
socklen_t clnt_addr_len = sizeof(clnt_addr);
bzero(&clnt_addr, sizeof(clnt_addr));
int clnt_sockfd = accept(sockfd, (struct sockaddr *)&clnt_addr, &clnt_addr_len);
if (clnt_sockfd == -1)
panic("socket accept error");
printf("New client fd %d, ip: %s, port: %d\n", clnt_sockfd, inet_ntoa(clnt_addr.sin_addr), ntohs(clnt_addr.sin_port));
while (true) {
char buf[1024];
bzero(&buf, sizeof(buf));
ssize_t n_read_bytes = read(clnt_sockfd, buf, sizeof(buf));
if (n_read_bytes > 0) {
printf("message from client fd %d: %s\n", clnt_sockfd, buf);
write(clnt_sockfd, buf, sizeof(buf));
} else if (n_read_bytes == 0) {
printf("client fd %d disconnected\n", clnt_sockfd);
close(clnt_sockfd);
break;
} else if (n_read_bytes == -1) {
close(clnt_sockfd);
panic("socket read error");
}
}
}
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