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66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
package net
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import (
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"net"
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"sync"
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"github.com/metacubex/mihomo/common/buf"
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"github.com/metacubex/mihomo/common/once"
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)
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type earlyConn struct {
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ExtendedConn // only expose standard N.ExtendedConn function to outside
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resFunc func() error
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resOnce sync.Once
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resErr error
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}
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func (conn *earlyConn) Response() error {
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conn.resOnce.Do(func() {
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conn.resErr = conn.resFunc()
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})
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return conn.resErr
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}
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func (conn *earlyConn) Read(b []byte) (n int, err error) {
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err = conn.Response()
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if err != nil {
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return 0, err
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}
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return conn.ExtendedConn.Read(b)
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}
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func (conn *earlyConn) ReadBuffer(buffer *buf.Buffer) (err error) {
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err = conn.Response()
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if err != nil {
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return err
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}
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return conn.ExtendedConn.ReadBuffer(buffer)
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}
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func (conn *earlyConn) Upstream() any {
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return conn.ExtendedConn
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}
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func (conn *earlyConn) Success() bool {
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return once.Done(&conn.resOnce) && conn.resErr == nil
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}
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func (conn *earlyConn) ReaderReplaceable() bool {
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return conn.Success()
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}
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func (conn *earlyConn) ReaderPossiblyReplaceable() bool {
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return !conn.Success()
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}
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func (conn *earlyConn) WriterReplaceable() bool {
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return true
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}
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var _ ExtendedConn = (*earlyConn)(nil)
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func NewEarlyConn(c net.Conn, f func() error) net.Conn {
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return &earlyConn{ExtendedConn: NewExtendedConn(c), resFunc: f}
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}
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