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#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
int
main(int argc, char* argv[])
{
int sockfd;
struct sockaddr_in addr;
socklen_t addrlen;
char buffer[1024];
int nbytes;
if ((sockfd = socket(PF_INET, SOCK_DGRAM, 0)) == -1) {
perror("Error creating a new socket");
exit(1);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(atoi(argv[1]));
addr.sin_addr.s_addr = INADDR_ANY;
addrlen = sizeof(addr);
if (bind(sockfd, (struct sockaddr*)&addr, addrlen) == -1) {
perror("Can't bind this socket");
exit(1);
}
while ((nbytes = recv(sockfd, buffer, 1024, 0)) != 0) {
if (nbytes == -1) {
perror("Error receiving data");
}
buffer[nbytes] = '\0';
printf("%s\n", buffer);
}
close(sockfd);
return 0;
}
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