// Socks5 method
protected override async Task <bool> HandshakeAsync(NetworkStream browser, NetworkStream server)
{
byte[] buffer = new byte[BUFFER_SIZE];
// From browser
int readedSize = await browser.ReadAsync(buffer, 0, buffer.Length);
RequestHandshake reqHand = new RequestHandshake(buffer, readedSize, BaseConstants.Methods.NO_AUTHENTICATION_REQUIRED);
Console.WriteLine($"Read request handshake from client: {reqHand.ToString()}");
// Socks5 Handshake with server
await this.Socks5HandshakeAsync(server);
// Socks5 Authentication with server
if (await _authentication.RunAsync(server))
{
// To browser
ReplyHandshake repHand = new ReplyHandshake(BaseConstants.Versions.SOCKS5,
BaseConstants.Methods.NO_AUTHENTICATION_REQUIRED);
buffer = repHand.GenBuff();
await browser.WriteAsync(buffer, 0, buffer.Length);
Console.WriteLine($"Write reply to client: {repHand}");
return(true);
}
return(false);
}
private async Task Socks5HandshakeAsync(NetworkStream server)
{
RequestHandshake reqHand = _handshakeCreator.Create();
byte[] buffer = reqHand.GenBuff();
await server.WriteAsync(buffer, 0, buffer.Length);
Console.WriteLine($"Write new request handshake to server: {reqHand}");
int readedLength = await server.ReadAsync(buffer, 0, buffer.Length);
ReplyHandshake repHand = new ReplyHandshake(buffer, readedLength, _handshakeCreator.GetMethod());
Console.WriteLine($"Read reply handshake from server: {repHand}");
}
