示例#1
0
/**
 * Create a socket and connect it to an address.
 *
 * @saddr: Inet socket address specification
 * @errp: set on error
 *
 * Returns: -1 on error, file descriptor on success.
 */
int inet_connect_saddr(InetSocketAddress *saddr, Error **errp)
{
    Error *local_err = NULL;
    struct addrinfo *res, *e;
    int sock = -1;

    res = inet_parse_connect_saddr(saddr, errp);
    if (!res) {
        return -1;
    }

    for (e = res; e != NULL; e = e->ai_next) {
        error_free(local_err);
        local_err = NULL;
        sock = inet_connect_addr(e, &local_err);
        if (sock >= 0) {
            break;
        }
    }

    if (sock < 0) {
        error_propagate(errp, local_err);
    }

    freeaddrinfo(res);
    return sock;
}
示例#2
0
/**
 * Create a socket and connect it to an address.
 *
 * @saddr: Inet socket address specification
 * @errp: set on error
 * @callback: callback function for non-blocking connect
 * @opaque: opaque for callback function
 *
 * Returns: -1 on error, file descriptor on success.
 *
 * If @callback is non-null, the connect is non-blocking.  If this
 * function succeeds, callback will be called when the connection
 * completes, with the file descriptor on success, or -1 on error.
 */
int inet_connect_saddr(InetSocketAddress *saddr,
                       NonBlockingConnectHandler *callback, void *opaque,
                       Error **errp)
{
    Error *local_err = NULL;
    struct addrinfo *res, *e;
    int sock = -1;
    bool in_progress;
    ConnectState *connect_state = NULL;

    res = inet_parse_connect_saddr(saddr, errp);
    if (!res) {
        return -1;
    }

    if (callback != NULL) {
        connect_state = g_malloc0(sizeof(*connect_state));
        connect_state->addr_list = res;
        connect_state->callback = callback;
        connect_state->opaque = opaque;
    }

    for (e = res; e != NULL; e = e->ai_next) {
        error_free(local_err);
        local_err = NULL;
        if (connect_state != NULL) {
            connect_state->current_addr = e;
        }
        sock = inet_connect_addr(e, &in_progress, connect_state, &local_err);
        if (sock >= 0) {
            break;
        }
    }

    if (sock < 0) {
        error_propagate(errp, local_err);
    } else if (in_progress) {
        /* wait_for_connect() will do the rest */
        return sock;
    } else {
        if (callback) {
            callback(sock, NULL, opaque);
        }
    }
    g_free(connect_state);
    freeaddrinfo(res);
    return sock;
}