send

#include <netdb.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>

int main(int argc, char** argv) {
  int sfd, rc;
  char buf[128];
  struct sockaddr_in saddr;
  struct hostent* addrent;

  addrent = gethostbyname(argv[1]);
  sfd = socket(PF_INET, SOCK_STREAM, 0);
  memset(&saddr, 0, sizeof(saddr));
  saddr.sin_family = AF_INET;
  saddr.sin_port = htons(atoi(argv[2]));
  memcpy(&saddr.sin_addr.s_addr, addrent->h_addr, addrent->h_length);
  connect(sfd, (struct sockaddr*) &saddr, sizeof(saddr));
  rc = read(sfd, buf, 128);
  write(1, buf, rc);
  close(sfd);
  return EXIT_SUCCESS;
}