4.1. Key Exchange Messages

4.1.2 Client Hello

struct {
    ProtocolVersion legacy_version = 0x0303;    /* TLS v1.2 */
    Random random;
    opaque legacy_session_id<0..32>;
    CipherSuite cipher_suites<2..2^16-2>;
    opaque legacy_compression_methods<1..2^8-1>;
    Extension extensions<8..2^16-1>;
} ClientHello;

LegacyVersion() = '0x0303',
ClientHello(
    random,
    legacy_session_id,
    cipher_suites,
    legacy_compression_methods,
    extensions
) = Handshake(
    HandshakeMessageTypeClientHello(),
    <LegacyVersion(),
    random,
    legacy_session_id,
    cipher_suites,
    legacy_compression_methods,
    extensions>
),

4.1.3 Server Hello

4.1.4 Hello Retry Request