* Introduced oej.io.TransportProtocol as the abstraction for the low-level transport of high-level protocols.
Now protocols such as HTTP/1.1 or HTTP/2 can be transported over QUIC, Unix-Domain, memory, and possibly over other low-level custom protocols too.
* Introduced oej.client.Request.transportProtocol(TransportProtocol) to specify TransportProtocol for each request.
* Introduced TransportProtocol to [HTTP2Client|HTTP3Client].connect(...) methods.
* Introduced [Client|Server]QuicConfiguration so that it can be used in other Connectors such as MemoryConnector.
* Introduced oej.server.MemoryConnector and EndPoint.Pipe for memory communication between peers, along with a MemoryTransportProtocol.
* Introduced QuicTransportProtocol as a wrapper for other TransportProtocols, so that QUIC can now also be transported over memory.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

* Removed usage of ClientConnector.forUnixDomain() from FastCGIProxyServlet (ee10 and ee9).
* Replaced usage of HTTP3ServerConnector with QuicServerConnector in jetty-http3.xml.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

…-http3.xml.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

* Updated client documentation to consider TransportProtocol.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Now first clear the list, then notify to avoid that when re-entering the same instruction is notified multiple times.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Introduced ContentSourceRequestContent, and updated ProxyHandler to use it.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Now unix-domain files are temp files, so their name is unique.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

…rk-modes'.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

…rk-modes'.

…es'.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

…meResolution().

Marked HttpDestination constructor as deprecated for removal.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>