uv_ip6_addr

uv_ip6_addr.c

/**
 * I, the copyright holder of this work, hereby release it into the public domain.
 * This applies worldwide. In case this is not legally possible, I grant any entity
 * the right to use this work for any purpose, without any conditions, unless such
 * conditions are required by law.
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>

struct sockaddr_in6 uv_ip6_addr(const char* host, int port) {
  struct sockaddr_in6 sin;
  struct addrinfo hints;
  struct addrinfo* res;
  int err;

  memset(&sin, 0, sizeof sin);
  memset(&hints, 0, sizeof hints);

  /* Set protocol to SOCK_STREAM, stops getaddrinfo() from
   * returning an address for each protocol.
   */
  hints.ai_protocol = SOCK_STREAM;
  hints.ai_family = AF_INET6;
  hints.ai_flags = AI_NUMERICHOST;
  res = NULL;

  err = getaddrinfo(host, NULL, &hints, &res);
  if (err) {
    /* TODO Signal error to caller. (But how?) */
#if 0
    fprintf(stderr, "getaddrinfo(%s): %s\n", host, gai_strerror(err));
#endif
    sin.sin6_family = AF_UNSPEC;
  }
  else {
    sin = *(struct sockaddr_in6 *) res->ai_addr;
    sin.sin6_port = htons(port);
  }

  if (res != NULL) {
    freeaddrinfo(res);
  }

  return sin;
}