protected override void ProcessAsSsl3()
{
// Client Version
this.Write(this.Context.Protocol);
// Random bytes - Unix time + Radom bytes [28]
TlsStream clientRandom = new TlsStream();
clientRandom.Write(this.Context.GetUnixTime());
clientRandom.Write(this.Context.GetSecureRandomBytes(28));
this.random = clientRandom.ToArray();
clientRandom.Reset();
this.Write(this.random);
// Session id
// Check if we have a cache session we could reuse
this.Context.SessionId = ClientSessionCache.FromHost (this.Context.ClientSettings.TargetHost);
if (this.Context.SessionId != null)
{
this.Write((byte)this.Context.SessionId.Length);
if (this.Context.SessionId.Length > 0)
{
this.Write(this.Context.SessionId);
}
}
else
{
this.Write((byte)0);
}
// Write length of Cipher suites
this.Write((short)(this.Context.SupportedCiphers.Count*2));
// Write Supported Cipher suites
for (int i = 0; i < this.Context.SupportedCiphers.Count; i++)
{
this.Write((short)this.Context.SupportedCiphers[i].Code);
}
// Compression methods length
this.Write((byte)1);
// Compression methods ( 0 = none )
this.Write((byte)this.Context.CompressionMethod);
}
protected override void ProcessAsTls1()
{
ProcessAsSsl3 ();
// If applicable add the "server_name" extension to the hello message
// http://www.ietf.org/rfc/rfc3546.txt
string host = Context.ClientSettings.TargetHost;
// Our TargetHost might be an address (not a host *name*) - see bug #8553
// RFC3546 -> Literal IPv4 and IPv6 addresses are not permitted in "HostName".
IPAddress addr;
if (IPAddress.TryParse (host, out addr))
return;
TlsStream extensions = new TlsStream ();
byte[] server_name = System.Text.Encoding.UTF8.GetBytes (host);
extensions.Write ((short) 0x0000); // ExtensionType: server_name (0)
extensions.Write ((short) (server_name.Length + 5)); // ServerNameList (length)
extensions.Write ((short) (server_name.Length + 3)); // ServerName (length)
extensions.Write ((byte) 0x00); // NameType: host_name (0)
extensions.Write ((short) server_name.Length); // HostName (length)
extensions.Write (server_name); // HostName (UTF8)
this.Write ((short) extensions.Length);
this.Write (extensions.ToArray ());
}