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Enable splice for freedom outbound (downlink only)

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- Add outbound name
- Add outbound conn in ctx
- Refactor splice: it can be turn on from all inbounds and outbounds
- Refactor splice: Add splice copy to vless inbound
- Fix http error test
- Add freedom splice toggle via env var
- Populate outbound obj in context
- Use CanSpliceCopy to mark a connection
- Turn off splice by default
This commit is contained in:
yuhan6665 2023-05-03 22:21:45 -04:00
parent ae2fa30e01
commit efd32b0fb2
32 changed files with 282 additions and 168 deletions
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27
proxy/freedom/freedom.go
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@ -13,6 +13,7 @@ import (
"github.com/xtls/xray-core/common/buf"
"github.com/xtls/xray-core/common/dice"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/platform"
"github.com/xtls/xray-core/common/retry"
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/common/signal"
@ -21,11 +22,14 @@ import (
"github.com/xtls/xray-core/features/dns"
"github.com/xtls/xray-core/features/policy"
"github.com/xtls/xray-core/features/stats"
"github.com/xtls/xray-core/proxy"
"github.com/xtls/xray-core/transport"
"github.com/xtls/xray-core/transport/internet"
"github.com/xtls/xray-core/transport/internet/stat"
)
var useSplice bool
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
h := new(Handler)
@ -36,6 +40,12 @@ func init() {
}
return h, nil
}))
const defaultFlagValue = "NOT_DEFINED_AT_ALL"
value := platform.NewEnvFlag("xray.buf.splice").GetValue(func() string { return defaultFlagValue })
switch value {
case "auto", "enable":
useSplice = true
}
}
// Handler handles Freedom connections.
@ -107,6 +117,11 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
if outbound == nil || !outbound.Target.IsValid() {
return newError("target not specified.")
}
outbound.Name = "freedom"
inbound := session.InboundFromContext(ctx)
if inbound != nil {
inbound.SetCanSpliceCopy(1)
}
destination := outbound.Target
UDPOverride := net.UDPDestination(nil, 0)
if h.config.DestinationOverride != nil {
@ -195,17 +210,17 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
responseDone := func() error {
defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
var reader buf.Reader
if destination.Network == net.Network_TCP {
reader = buf.NewReader(conn)
} else {
reader = NewPacketReader(conn, UDPOverride)
var writeConn net.Conn
if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.Conn != nil && useSplice {
writeConn = inbound.Conn
}
return proxy.CopyRawConnIfExist(ctx, conn, writeConn, link.Writer, timer)
}
reader := NewPacketReader(conn, UDPOverride)
if err := buf.Copy(reader, output, buf.UpdateActivity(timer)); err != nil {
return newError("failed to process response").Base(err)
}
return nil
}