File	Doc	Category	Size	Date	Package
ClientHello.java	API Doc	Android 1.5 API	7181	Wed May 06 22:41:06 BST 2009	org.apache.harmony.xnet.provider.jsse

ClientHello

• java.lang.Object
  • .Message

Fields Summary
final byte[]	client_version Client version
final byte[]	random Random bytes
final byte[]	session_id Session id
final CipherSuite[]	cipher_suites Cipher suites supported by the client
final byte[]	compression_methods Compression methods supported by the client

Constructors Summary
public ClientHello(SecureRandom sr, byte[] version, byte[] ses_id, CipherSuite[] cipher_suite) Creates outbound message param sr param version param ses_id param cipher_suite client_version = version; long gmt_unix_time = System.currentTimeMillis()/1000; sr.nextBytes(random); random[0] = (byte) (gmt_unix_time & 0xFF000000 >>> 24); random[1] = (byte) (gmt_unix_time & 0xFF0000 >>> 16); random[2] = (byte) (gmt_unix_time & 0xFF00 >>> 8); random[3] = (byte) (gmt_unix_time & 0xFF); session_id = ses_id; this.cipher_suites = cipher_suite; compression_methods = new byte[] { 0 }; // CompressionMethod.null length = 38 + session_id.length + (this.cipher_suites.length << 1) + compression_methods.length;
public ClientHello(HandshakeIODataStream in, int length) Creates inbound message param in param length throws IOException client_version = new byte[2]; client_version[0] = (byte) in.readUint8(); client_version[1] = (byte) in.readUint8(); in.read(random, 0, 32); int size = in.read(); session_id = new byte[size]; in.read(session_id, 0, size); int l = in.readUint16(); if ((l & 0x01) == 0x01) { // cipher suites length must be an even number fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect ClientHello"); } size = l >> 1; cipher_suites = new CipherSuite[size]; for (int i = 0; i < size; i++) { byte b0 = (byte) in.read(); byte b1 = (byte) in.read(); cipher_suites[i] = CipherSuite.getByCode(b0, b1); } size = in.read(); compression_methods = new byte[size]; in.read(compression_methods, 0, size); this.length = 38 + session_id.length + (cipher_suites.length << 1) + compression_methods.length; if (this.length > length) { fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect ClientHello"); } // for forward compatibility, extra data is permitted; // must be ignored if (this.length < length) { in.skip(length - this.length); this.length = length; }
public ClientHello(HandshakeIODataStream in) Parse V2ClientHello param in throws IOException if (in.readUint8() != 1) { fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect V2ClientHello"); } client_version = new byte[2]; client_version[0] = (byte) in.readUint8(); client_version[1] = (byte) in.readUint8(); int cipher_spec_length = in.readUint16(); if (in.readUint16() != 0) { // session_id_length // as client already knows the protocol known to a server it should // initiate the connection in that native protocol fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect V2ClientHello, cannot be used for resuming"); } int challenge_length = in.readUint16(); if (challenge_length < 16) { fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect V2ClientHello, short challenge data"); } session_id = new byte[0]; cipher_suites = new CipherSuite[cipher_spec_length/3]; for (int i = 0; i < cipher_suites.length; i++) { byte b0 = (byte) in.read(); byte b1 = (byte) in.read(); byte b2 = (byte) in.read(); cipher_suites[i] = CipherSuite.getByCode(b0, b1, b2); } compression_methods = new byte[] { 0 }; // CompressionMethod.null if (challenge_length < 32) { Arrays.fill(random, 0, 32 - challenge_length, (byte)0); System.arraycopy(in.read(challenge_length), 0, random, 32 - challenge_length, challenge_length); } else if (challenge_length == 32) { System.arraycopy(in.read(32), 0, random, 0, 32); } else { System.arraycopy(in.read(challenge_length), challenge_length - 32, random, 0, 32); } if (in.available() > 0) { fatalAlert(AlertProtocol.DECODE_ERROR, "DECODE ERROR: incorrect V2ClientHello, extra data"); } this.length = 38 + session_id.length + (cipher_suites.length << 1) + compression_methods.length;

Methods Summary
public byte[]	getRandom() Returns client random return client random return random;
public int	getType() Returns message type return return Handshake.CLIENT_HELLO;
public void	send(HandshakeIODataStream out) Sends message param out out.write(client_version); out.write(random); out.writeUint8(session_id.length); out.write(session_id); int size = cipher_suites.length << 1; out.writeUint16(size); for (int i = 0; i < cipher_suites.length; i++) { out.write(cipher_suites[i].toBytes()); } out.writeUint8(compression_methods.length); for (int i = 0; i < compression_methods.length; i++) { out.write(compression_methods[i]); }