Add parts of custom oscur0 conn

Author: mingyech

u_conn_oscur0.go

@@ -0,0 +1,36 @@
+package quic
+
+import (
+	"net"
+
+	"github.com/refraction-networking/uquic/internal/protocol"
+	"github.com/refraction-networking/uquic/internal/utils"
+	"github.com/refraction-networking/uquic/logging"
+)
+
+func oscur0ServerConn(pconn net.PacketConn, remoteAddr net.Addr) (Connection, error) {
+	c := &connection{}
+
+	c.handshakeDestConnID = protocol.ParseConnectionID([]uint8{38, 67, 73, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+	c.origDestConnID = protocol.ParseConnectionID([]uint8{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+	c.retrySrcConnID = nil
+	c.srcConnIDLen = 4
+	c.perspective = logging.PerspectiveServer
+	c.version = Version1
+
+	rconn, err := wrapConn(pconn)
+	if err != nil {
+		return nil, err
+	}
+	c.conn = newSendConn(rconn, remoteAddr, packetInfo{}, utils.DefaultLogger)
+	c.sendQueue = newSendQueue(c.conn)
+	c.streamsMap = newStreamsMap(c, c.newFlowController, 100, 100, c.perspective)
+	handlermap := newPacketHandlerMap(c.statelessReset)
+	c.connIDManager = newConnIDManager(
+		c.origDestConnID,
+		func(token protocol.StatelessResetToken) { runner.AddResetToken(token, s) },
+		runner.RemoveResetToken,
+		s.queueControlFrame,
+	)
+	return c, nil
+}