C++ (Cpp) grpc_create_dualstack_socket_using_factory Examples

Example #1

File: udp_server.c Project: mdsteele/grpc

int grpc_udp_server_add_port(grpc_udp_server *s,
                             const grpc_resolved_address *addr,
                             grpc_udp_server_read_cb read_cb,
                             grpc_udp_server_write_cb write_cb,
                             grpc_udp_server_orphan_cb orphan_cb) {
  grpc_udp_listener *sp;
  int allocated_port1 = -1;
  int allocated_port2 = -1;
  int fd;
  grpc_dualstack_mode dsmode;
  grpc_resolved_address addr6_v4mapped;
  grpc_resolved_address wild4;
  grpc_resolved_address wild6;
  grpc_resolved_address addr4_copy;
  grpc_resolved_address *allocated_addr = NULL;
  grpc_resolved_address sockname_temp;
  int port;

  /* Check if this is a wildcard port, and if so, try to keep the port the same
     as some previously created listener. */
  if (grpc_sockaddr_get_port(addr) == 0) {
    for (sp = s->head; sp; sp = sp->next) {
      sockname_temp.len = sizeof(struct sockaddr_storage);
      if (0 == getsockname(sp->fd, (struct sockaddr *)sockname_temp.addr,
                           (socklen_t *)&sockname_temp.len)) {
        port = grpc_sockaddr_get_port(&sockname_temp);
        if (port > 0) {
          allocated_addr = gpr_malloc(sizeof(grpc_resolved_address));
          memcpy(allocated_addr, addr, sizeof(grpc_resolved_address));
          grpc_sockaddr_set_port(allocated_addr, port);
          addr = allocated_addr;
          break;
        }
      }
    }
  }

  if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
    addr = &addr6_v4mapped;
  }

  /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
  if (grpc_sockaddr_is_wildcard(addr, &port)) {
    grpc_sockaddr_make_wildcards(port, &wild4, &wild6);

    /* Try listening on IPv6 first. */
    addr = &wild6;
    // TODO(rjshade): Test and propagate the returned grpc_error*:
    GRPC_ERROR_UNREF(grpc_create_dualstack_socket_using_factory(
        s->socket_factory, addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode, &fd));
    allocated_port1 =
        add_socket_to_server(s, fd, addr, read_cb, write_cb, orphan_cb);
    if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) {
      goto done;
    }

    /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */
    if (port == 0 && allocated_port1 > 0) {
      grpc_sockaddr_set_port(&wild4, allocated_port1);
    }
    addr = &wild4;
  }

  // TODO(rjshade): Test and propagate the returned grpc_error*:
  GRPC_ERROR_UNREF(grpc_create_dualstack_socket_using_factory(
      s->socket_factory, addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode, &fd));
  if (fd < 0) {
    gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno));
  }
  if (dsmode == GRPC_DSMODE_IPV4 &&
      grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) {
    addr = &addr4_copy;
  }
  allocated_port2 =
      add_socket_to_server(s, fd, addr, read_cb, write_cb, orphan_cb);

done:
  gpr_free(allocated_addr);
  return allocated_port1 >= 0 ? allocated_port1 : allocated_port2;
}

Example #2

File: socket_utils_common_posix.c Project: baylabs/grpc

grpc_error *grpc_create_dualstack_socket(
    const grpc_resolved_address *resolved_addr, int type, int protocol,
    grpc_dualstack_mode *dsmode, int *newfd) {
  return grpc_create_dualstack_socket_using_factory(NULL, resolved_addr, type,
                                                    protocol, dsmode, newfd);
}