TsgcHTTP3Server › Properties › QUICMode

QUICMode Property

Read-only. The QUIC engine the HTTP/3 server selected when it started.

Syntax

property QUICMode: TsgcQUICMode read FQUICMode;

Type

TsgcQUICMode = (qmCustom, qmBuiltin), declared in sgcSSL_QUIC.pas.

Remarks

The engine is chosen when the server starts. qmBuiltin, the default, is the OpenSSL built-in QUIC server (OpenSSL 3.5 or later), used when the loaded OpenSSL library exports it. qmCustom is the sgc QUIC engine, used as the fallback when the built-in QUIC server is not available. The HTTP/3 layer works the same way on both engines.

With QUICOptions.SSLOptions.IOHandler = iohNativeTLS the server always runs on qmCustom, with the TLS 1.3 handshake on the native TLS engine. On either engine an empty Host listens dual-stack, on IPv4 and IPv6. See QUIC for the engine comparison.

Read the value after Start. This property is inherited from TsgcQUICServer and is available in the Delphi/C++Builder implementation only.

Example

oServer.Start;
if oServer.QUICMode = qmBuiltin then
  Log('OpenSSL built-in QUIC engine')
else
  Log('sgc QUIC engine');

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