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/* sock is a connected TCP socket */

uint32_t num;

if (recv(sock, (void *)&num, sizeof(uint32_t), 0) < (int)sizeof(uint32_t)) {
  /* Handle error */
}

printf("We received %u from the network!\n", (unsigned int)num);

/* sock is a connected TCP socket */

uint32_t num;

if (recv(sock, (void *)&num, sizeof(uint32_t), 0) < (int)sizeof(uint32_t)) {
  /* Handle error */
}

num = ntohl(num);
printf("We recieved %u from the network!\n", (unsigned int)num);