mirror of
https://github.com/SagerNet/sing.git
synced 2025-04-04 12:27:37 +03:00
31 lines
678 B
Go
31 lines
678 B
Go
package control
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import (
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"syscall"
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E "github.com/sagernet/sing/common/exceptions"
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)
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type Func = func(network, address string, conn syscall.RawConn) error
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func Append(oldFunc Func, newFunc Func) Func {
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if oldFunc == nil {
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return newFunc
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} else if newFunc == nil {
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return oldFunc
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}
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return func(network, address string, conn syscall.RawConn) error {
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if err := oldFunc(network, address, conn); err != nil {
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return err
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}
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return newFunc(network, address, conn)
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}
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}
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func Control(conn syscall.RawConn, block func(fd uintptr) error) error {
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var innerErr error
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err := conn.Control(func(fd uintptr) {
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innerErr = block(fd)
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})
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return E.Errors(innerErr, err)
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}
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