protected async override Task CreateConnectionAsync(TcpClient client, string destinationHost, int destinationPort,
CancellationToken cancellationToken = default)
{
if (string.IsNullOrEmpty(destinationHost))
{
throw new ArgumentException(null, nameof(destinationHost));
}
if (!PortHelper.ValidateTcpPort(destinationPort))
{
throw new ArgumentOutOfRangeException(nameof(destinationPort));
}
if (client == null || !client.Connected)
{
throw new SocketException();
}
try
{
await RequestConnectionAsync(client.GetStream(), CommandConnect, destinationHost, destinationPort, cancellationToken)
.ConfigureAwait(false);
}
catch (Exception ex)
{
client.Close();
if (ex is IOException || ex is SocketException)
{
throw new ProxyException("Error while working with proxy", ex);
}
throw;
}
}
/// /// <inheritdoc/>
protected async override Task CreateConnectionAsync(TcpClient client, string destinationHost, int destinationPort,
CancellationToken cancellationToken = default)
{
if (string.IsNullOrEmpty(destinationHost))
{
throw new ArgumentException(null, nameof(destinationHost));
}
if (!PortHelper.ValidateTcpPort(destinationPort))
{
throw new ArgumentOutOfRangeException(nameof(destinationPort));
}
if (client == null || !client.Connected)
{
throw new SocketException();
}
HttpStatusCode statusCode;
try
{
var nStream = client.GetStream();
await RequestConnectionAsync(nStream, destinationHost, destinationPort, cancellationToken).ConfigureAwait(false);
statusCode = await ReceiveResponseAsync(nStream, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
client.Close();
if (ex is IOException || ex is SocketException)
{
throw new ProxyException("Error while working with proxy", ex);
}
throw;
}
if (statusCode != HttpStatusCode.OK)
{
client.Close();
throw new ProxyException("The proxy didn't reply with 200 OK");
}
}
protected override Task CreateConnectionAsync(TcpClient client, string destinationHost, int destinationPort,
CancellationToken cancellationToken = default)
{
if (string.IsNullOrEmpty(destinationHost))
{
throw new ArgumentException(null, nameof(destinationHost));
}
if (!PortHelper.ValidateTcpPort(destinationPort))
{
throw new ArgumentOutOfRangeException(nameof(destinationPort));
}
if (client == null || !client.Connected)
{
throw new SocketException();
}
return(Task.CompletedTask);
}
