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#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#define PORT 3030
#define CONNECTIONS_NUM 1
int
main(int argc, char* argv[])
{
int sockfd, clientfd;
struct sockaddr_in address;
socklen_t addrlen;
int nbytes, ntotbytes;
char buffer[1024];
if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
perror("Error creating a new socket");
exit(1);
}
address.sin_family = AF_INET;
address.sin_port = htons(atoi(argv[1]));
address.sin_addr.s_addr = INADDR_ANY;
addrlen = sizeof(address);
if (bind(sockfd, (struct sockaddr*)&address, addrlen) == -1) {
perror("Error binding the port");
exit(1);
}
if (listen(sockfd, CONNECTIONS_NUM) == -1) {
perror("Can't listen that port");
exit(1);
}
while (1) {
if ((clientfd = accept(sockfd, (struct sockaddr*)&address, &addrlen)) == -1) {
perror("Can't accept request from client");
break;
}
ntotbytes = 0;
while ((nbytes = recv(clientfd, buffer, 1024, 0)) != 0) {
if (nbytes == -1) {
perror("Error reading the client");
break;
}
buffer[nbytes] = '\0';
if (strncmp(buffer, "quit", 4) == 0) {
break;
}
printf("%s", buffer);
ntotbytes += nbytes;
}
sprintf(buffer, "Total bytes read: %d\n", ntotbytes);
if ((nbytes = send(clientfd, buffer, strlen(buffer), 0)) != strlen(buffer)) {
perror("Error sending back a message");
}
close(clientfd);
}
close(sockfd);
return 0;
}
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