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24 lines
575 B
Go
24 lines
575 B
Go
package net
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import (
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"io"
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"net"
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"time"
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)
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// Relay copies between left and right bidirectionally.
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func Relay(leftConn, rightConn net.Conn) {
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ch := make(chan error)
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go func() {
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// Wrapping to avoid using *net.TCPConn.(ReadFrom)
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// See also https://github.com/Dreamacro/clash/pull/1209
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_, err := io.Copy(WriteOnlyWriter{Writer: leftConn}, ReadOnlyReader{Reader: rightConn})
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leftConn.SetReadDeadline(time.Now())
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ch <- err
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}()
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_, _ = io.Copy(WriteOnlyWriter{Writer: rightConn}, ReadOnlyReader{Reader: leftConn})
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rightConn.SetReadDeadline(time.Now())
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<-ch
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}
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