Examples with CouldNotConnectToAnyProvidedSocks5Host org.jivesoftware.smackx.bytestreams.socks5.Socks5Exception.CouldNotConnectToAnyProvidedSocks5Host used on opensource projects

Example 1 with CouldNotConnectToAnyProvidedSocks5Host

use of org.jivesoftware.smackx.bytestreams.socks5.Socks5Exception.CouldNotConnectToAnyProvidedSocks5Host in project Smack by igniterealtime.

the class Socks5BytestreamRequest method cancelRequest.

/**
 * Cancels the SOCKS5 Bytestream request by sending an error to the initiator and building a
 * XMPP exception.
 *
 * @param streamHostsExceptions the stream hosts and their exceptions.
 * @throws NotConnectedException if the XMPP connection is not connected.
 * @throws InterruptedException if the calling thread was interrupted.
 * @throws CouldNotConnectToAnyProvidedSocks5Host as expected result.
 * @throws NoSocks5StreamHostsProvided if no stream host was provided.
 */
private void cancelRequest(Map<StreamHost, Exception> streamHostsExceptions) throws NotConnectedException, InterruptedException, CouldNotConnectToAnyProvidedSocks5Host, NoSocks5StreamHostsProvided {
    final Socks5Exception.NoSocks5StreamHostsProvided noHostsProvidedException;
    final Socks5Exception.CouldNotConnectToAnyProvidedSocks5Host couldNotConnectException;
    final String errorMessage;
    if (streamHostsExceptions.isEmpty()) {
        noHostsProvidedException = new Socks5Exception.NoSocks5StreamHostsProvided();
        couldNotConnectException = null;
        errorMessage = noHostsProvidedException.getMessage();
    } else {
        noHostsProvidedException = null;
        couldNotConnectException = Socks5Exception.CouldNotConnectToAnyProvidedSocks5Host.construct(streamHostsExceptions);
        errorMessage = couldNotConnectException.getMessage();
    }
    StanzaError error = StanzaError.from(StanzaError.Condition.item_not_found, errorMessage).build();
    IQ errorIQ = IQ.createErrorResponse(this.bytestreamRequest, error);
    this.manager.getConnection().sendStanza(errorIQ);
    if (noHostsProvidedException != null) {
        throw noHostsProvidedException;
    } else {
        throw couldNotConnectException;
    }
}

Example 2 with CouldNotConnectToAnyProvidedSocks5Host

use of org.jivesoftware.smackx.bytestreams.socks5.Socks5Exception.CouldNotConnectToAnyProvidedSocks5Host in project Smack by igniterealtime.

the class Socks5BytestreamRequest method accept.

/**
 * Accepts the SOCKS5 Bytestream initialization request and returns the socket to send/receive
 * data.
 * <p>
 * Before accepting the SOCKS5 Bytestream request you can set timeouts by invoking
 * {@link #setTotalConnectTimeout(int)} and {@link #setMinimumConnectTimeout(int)}.
 *
 * @return the socket to send/receive data
 * @throws InterruptedException if the current thread was interrupted while waiting
 * @throws XMPPErrorException if there was an XMPP error returned.
 * @throws NotConnectedException if the XMPP connection is not connected.
 * @throws CouldNotConnectToAnyProvidedSocks5Host if no connection to any provided stream host could be established
 * @throws NoSocks5StreamHostsProvided if no stream host was provided.
 */
@Override
public Socks5BytestreamSession accept() throws InterruptedException, XMPPErrorException, CouldNotConnectToAnyProvidedSocks5Host, NotConnectedException, NoSocks5StreamHostsProvided {
    Collection<StreamHost> streamHosts = this.bytestreamRequest.getStreamHosts();
    Map<StreamHost, Exception> streamHostsExceptions = new HashMap<>();
    // throw exceptions if request contains no stream hosts
    if (streamHosts.size() == 0) {
        cancelRequest(streamHostsExceptions);
    }
    StreamHost selectedHost = null;
    Socket socket = null;
    String digest = Socks5Utils.createDigest(this.bytestreamRequest.getSessionID(), this.bytestreamRequest.getFrom(), this.manager.getConnection().getUser());
    /*
         * determine timeout for each connection attempt; each SOCKS5 proxy has the same amount of
         * time so that the first does not consume the whole timeout
         */
    int timeout = Math.max(getTotalConnectTimeout() / streamHosts.size(), getMinimumConnectTimeout());
    for (StreamHost streamHost : streamHosts) {
        String address = streamHost.getAddress() + ":" + streamHost.getPort();
        // check to see if this address has been blacklisted
        int failures = getConnectionFailures(address);
        if (connectionFailureThreshold > 0 && failures >= connectionFailureThreshold) {
            continue;
        }
        // establish socket
        try {
            // build SOCKS5 client
            final Socks5Client socks5Client = new Socks5Client(streamHost, digest);
            // connect to SOCKS5 proxy with a timeout
            socket = socks5Client.getSocket(timeout);
            // set selected host
            selectedHost = streamHost;
            break;
        } catch (TimeoutException | IOException | SmackException | XMPPException e) {
            streamHostsExceptions.put(streamHost, e);
            incrementConnectionFailures(address);
        }
    }
    // throw exception if connecting to all SOCKS5 proxies failed
    if (selectedHost == null || socket == null) {
        cancelRequest(streamHostsExceptions);
    }
    // send used-host confirmation
    Bytestream response = createUsedHostResponse(selectedHost);
    this.manager.getConnection().sendStanza(response);
    return new Socks5BytestreamSession(socket, selectedHost.getJID().equals(this.bytestreamRequest.getFrom()));
}