async Task <Connection> NewConnection()
{
try {
var r = await ConnectHelper.Connect(this, server, timeout);
r.ThrowIfFailed();
var ws = new WebSocket(r.Stream, true);
if (timeout > 0)
{
ws.AddToManaged(timeout / 2, timeout);
}
var conn = new Connection(ws, enc)
{
PerSessionIV = per_session_iv
};
ws.Closed += (_) => {
// when websocket is closed
lock (pool)
pool.Remove(conn); // remove from pool if it's in
};
return(conn);
} catch (Exception e) {
Logger.error("connecting to server: " + e.Message);
throw;
}
}
public override async Task <ConnectResult> ProtectedConnect(ConnectArgument arg)
{
var dest = arg.Dest;
var baseResult = await ConnectHelper.Connect(this, server.WithDefaultPort(80), connect_timeout);
if (!baseResult.Ok)
{
return(baseResult);
}
try {
var dataStream = baseResult.Stream;
var asStream = MyStream.ToStream(dataStream);
var sw = new StringWriter(new StringBuilder(1024));
var destStr = dest.ToString();
HttpClient.WriteHttpRequestHeader(sw, "CONNECT", destStr, new Dictionary <string, string> {
["Host"] = destStr
});
await dataStream.WriteAsync(NaiveUtils.GetUTF8Bytes(sw.ToString()));
var responseStr = await NaiveUtils.ReadStringUntil(asStream, NaiveUtils.DoubleCRLFBytes);
var sr = new StringReader(responseStr);
var response = HttpClient.ReadHttpResponseHeader(sr);
if (response.StatusCode != "200")
{
throw new Exception($"remote server response '{response.StatusCode} {response.ReasonPhrase}'");
}
return(CreateConnectResultWithStream(dataStream));
} catch (Exception) {
MyStream.CloseWithTimeout(baseResult.Stream);
throw;
}
}
public override async Task <ConnectResult> ProtectedConnect(ConnectArgument arg)
{
var dest = arg.Dest;
var baseResult = await ConnectHelper.Connect(this, server, connect_timeout);
if (!baseResult.Ok)
{
return(baseResult);
}
try {
var dataStream = getEncryptionStream(baseResult.Stream);
var bytes = dest.ToSocks5Bytes();
await dataStream.WriteAsync(bytes);
return(CreateConnectResultWithStream(dataStream));
} catch (Exception) {
MyStream.CloseWithTimeout(baseResult.Stream);
throw;
}
}
public override Task <ConnectResult> ProtectedConnect(ConnectArgument arg)
{
var dest = force_dest.IsDefault ? arg.Dest : force_dest;
return(ConnectHelper.Connect(this, arg.Dest, connect_timeout));
}