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Fix override packet conn

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This commit is contained in:
世界 2022-12-21 21:58:03 +08:00
parent cfaf15f429
commit 53f19a6ead
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GPG key ID: CD109927C34A63C4
1 changed files with 43 additions and 2 deletions
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45
outbound/direct.go
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@ -12,6 +12,8 @@ import (
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common/buf"
"github.com/sagernet/sing/common/bufio"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
@ -160,8 +162,30 @@ func (h *Direct) ListenPacket(ctx context.Context, destination M.Socksaddr) (net
ctx, metadata := adapter.AppendContext(ctx)
metadata.Outbound = h.tag
metadata.Destination = destination
h.logger.InfoContext(ctx, "outbound packet connection")
return h.dialer.ListenPacket(ctx, destination)
switch h.overrideOption {
case 1:
destination = h.overrideDestination
case 2:
newDestination := h.overrideDestination
newDestination.Port = destination.Port
destination = newDestination
case 3:
destination.Port = h.overrideDestination.Port
}
if h.overrideOption == 0 {
h.logger.InfoContext(ctx, "outbound packet connection")
} else {
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
}
conn, err := h.dialer.ListenPacket(ctx, destination)
if err != nil {
return nil, err
}
if h.overrideOption == 0 {
return conn, nil
} else {
return &overridePacketConn{bufio.NewPacketConn(conn), destination}, nil
}
}
func (h *Direct) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
@ -171,3 +195,20 @@ func (h *Direct) NewConnection(ctx context.Context, conn net.Conn, metadata adap
func (h *Direct) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return NewPacketConnection(ctx, h, conn, metadata)
}
type overridePacketConn struct {
N.NetPacketConn
overrideDestination M.Socksaddr
}
func (c *overridePacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
return c.NetPacketConn.WritePacket(buffer, c.overrideDestination)
}
func (c *overridePacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
return c.NetPacketConn.WriteTo(p, c.overrideDestination.UDPAddr())
}
func (c *overridePacketConn) Upstream() any {
return c.NetPacketConn
}