/**
* Create a new connected socket. Blocks until the socket is created, unless the connectDelay
* option (i2p.streaming.connectDelay) is set and greater than zero. If so this will return
* immediately, and the client may quickly write initial data to the socket and this data will be
* bundled in the SYN packet.
*
* @param peer Destination to connect to
* @param options I2P socket options to be used for connecting, may be null
* @return I2PSocket if successful
* @throws NoRouteToHostException if the peer is not found or not reachable
* @throws I2PException if there is some other I2P-related problem
*/
public I2PSocket connect(Destination peer, I2PSocketOptions options)
throws I2PException, NoRouteToHostException {
if (options == null) options = _defaultOptions;
ConnectionOptions opts = null;
if (options instanceof ConnectionOptions)
opts = new ConnectionOptions((ConnectionOptions) options);
else opts = new ConnectionOptions(options);
if (_log.shouldLog(Log.INFO))
_log.info(
"Connecting to "
+ peer.calculateHash().toBase64().substring(0, 6)
+ " with options: "
+ opts);
// pick the subsession here
I2PSession session = _session;
if (!_subsessions.isEmpty()) {
updateUserDsaList();
Hash h = peer.calculateHash();
if (_dsaOnly.contains(h) || (!_userDsaOnly.isEmpty() && _userDsaOnly.contains(h))) {
// FIXME just taking the first one for now
for (I2PSession sess : _subsessions) {
if (sess.getMyDestination().getSigType() == SigType.DSA_SHA1) {
session = sess;
break;
}
}
}
}
verifySession(session);
// the following blocks unless connect delay > 0
Connection con = _connectionManager.connect(peer, opts, session);
if (con == null)
throw new TooManyStreamsException("Too many streams, max " + _defaultOptions.getMaxConns());
I2PSocketFull socket = new I2PSocketFull(con, _context);
con.setSocket(socket);
if (con.getConnectionError() != null) {
con.disconnect(false);
throw new NoRouteToHostException(con.getConnectionError());
}
return socket;
}
/**
* @return a new subsession, non-null
* @param privateKeyStream null for transient, if non-null must have same encryption keys as
* primary session and different signing keys
* @param opts subsession options if any, may be null
* @since 0.9.21
*/
public I2PSession addSubsession(InputStream privateKeyStream, Properties opts)
throws I2PSessionException {
if (privateKeyStream == null) {
// We don't actually need the same pubkey in the dest, just in the LS.
// The dest one is unused. But this is how we find the LS keys
// to reuse in RequestLeaseSetMessageHandler.
ByteArrayOutputStream keyStream = new ByteArrayOutputStream(1024);
try {
SigType type = getSigType(opts);
if (type != SigType.DSA_SHA1) {
// hassle, have to set up the padding and cert, see I2PClientImpl
throw new I2PSessionException("type " + type + " unsupported");
}
PublicKey pub = _session.getMyDestination().getPublicKey();
PrivateKey priv = _session.getDecryptionKey();
SimpleDataStructure[] keys = _context.keyGenerator().generateSigningKeys(type);
pub.writeBytes(keyStream);
keys[0].writeBytes(keyStream); // signing pub
Certificate.NULL_CERT.writeBytes(keyStream);
priv.writeBytes(keyStream);
keys[1].writeBytes(keyStream); // signing priv
} catch (Exception e) {
throw new I2PSessionException("Error creating keys", e);
}
privateKeyStream = new ByteArrayInputStream(keyStream.toByteArray());
}
I2PSession rv = _session.addSubsession(privateKeyStream, opts);
boolean added = _subsessions.add(rv);
if (!added) {
// shouldn't happen
_session.removeSubsession(rv);
throw new I2PSessionException("dup");
}
ConnectionOptions defaultOptions = new ConnectionOptions(opts);
int protocol =
defaultOptions.getEnforceProtocol() ? I2PSession.PROTO_STREAMING : I2PSession.PROTO_ANY;
rv.addMuxedSessionListener(
_connectionManager.getMessageHandler(), protocol, defaultOptions.getLocalPort());
if (_log.shouldLog(Log.WARN)) _log.warn("Added subsession " + rv);
return rv;
}
/**
* @return dest or null
* @since 0.8.4
*/
Destination getMyDestination() {
if (_manager == null) return null;
I2PSession sess = _manager.getSession();
if (sess != null) return sess.getMyDestination();
return null;
}
@Override
public String getPublicDestinationInfo() {
I2PSession ses = manager.getSession();
return ses.getMyDestination().toBase64();
}