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mux.go
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mux.go
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package quic
import (
"context"
"github.com/costinm/ugate"
"github.com/quic-go/quic-go"
//"io"
"log"
"net"
)
// QuicMUX is a mux to a specific node. May be accepted or dialed.
// Equivalent with quic/h3/client.go ( when dialing ), and Quic server when accepting.
type QuicMUX struct {
// Remote - has an WorkloadID and Addr. Set for client connections.
n *ugate.MeshCluster
client bool
// Can be accepted or dialed - the protocol is symmetric.
s quic.EarlyConnection
}
const errorNoError = 0x100
var Debug = false
func (ugs *QuicMUX) Close() error {
if Debug {
log.Println("H3: MUX close ", ugs.n.ID)
}
return ugs.s.CloseWithError(0, "")
}
//func (ugs *QuicMUX) DialStream(ctx context.Context, addr string, inStream util.Stream) (util.Stream, error) {
// //if UseRawStream {
// s, err := ugs.s.OpenStream()
// if err != nil {
// return nil, err
// }
//
// str := util.GetStream(s, s)
// if inStream != nil && inStream.RequestHeader() != nil {
// for k, v := range inStream.RequestHeader() {
// str.Header()[k] = v
// }
// }
//
// str.Header().Set("dest", addr)
// err = str.SendHeader(s, str.Header())
// if err != nil {
// return nil, err
// }
//
// // RoundTripStart sending
// if inStream != nil {
// go func() {
// // Equivalent with proxyToClient.
// str.CopyBuffered(s, inStream, true)
// // TODO: do something on err, done
// log.Println("QUIC out - copy reader close ", str.StreamId, addr)
//
// }()
// }
//
// err = str.ReadHeader(s)
// if err != nil {
// return nil, err
// }
// log.Println("QUIC out stream res", str.StreamId, addr, str.InHeader)
//
// return str, nil
//}
// DialContext uses the current association to open a stream.
//
// Note that H3 is handled separately - this is an L4 use of QUIC, similar to SSH.
//
func (ugs *QuicMUX) DialContext(ctx context.Context, net, addr string) (net.Conn, error) {
str, err := ugs.s.OpenStream()
if err != nil {
return nil, err
}
return &QuicNetCon{Stream: str}, nil
}
type QuicNetCon struct {
quic.Stream
}
func (q QuicNetCon) LocalAddr() net.Addr {
//TODO implement me
panic("implement me")
}
func (q QuicNetCon) RemoteAddr() net.Addr {
//TODO implement me
panic("implement me")
}
//// RoundTrip is used for forwarding HTTP connections back to the client (normal) or
//// server ( reverse ).
//func (ugs *QuicMUX) RoundTrip(request *http.Request) (*http.Response, error) {
// // make sure the request will be accepted
// request.URL.Scheme = "https"
// request.URL.Host = ugs.hostname
// if Debug {
// if ugs.n != nil {
// log.Println("H3: RT-start", ugs.n.ID, request.URL, ugs.client)
// } else {
// log.Println("H3: RT-start", request.URL, ugs.client)
// }
// }
// var res *http.Response
// var err error
// if ugs.rt != nil {
// res, err = ugs.rt.RoundTrip(request)
// } else {
// // Replacement for the lack of support in QUIC for using the H3 request programmatically.
// // This only works with h3s servers.
// s := util.NewStream()
// s.Request = request
// s.In = request.Body
//
// rs, err1 := ugs.DialStream(request.Context(), request.URL.Host, s)
// if err1 != nil {
// return nil, err1
// }
//
// res = &http.Response{
// Body: rs, // rs.In
// Header: rs.Header(),
// }
// }
// if Debug {
// log.Println("H3: RT-done", request.URL, ugs.client, err)
// if err == nil {
// go func() {
// <-request.Context().Done()
// log.Println("H3: RT-ctx-done", request.URL)
// }()
// }
// }
// return res, err
//}