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24 lines
546 B
Go
24 lines
546 B
Go
package utils
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import (
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"net"
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"syscall"
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)
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func SetDontFragment(conn *net.UDPConn) error {
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rawConn, err := conn.SyscallConn()
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if err != nil {
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return err
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}
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var err1, err2 error
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err1 = rawConn.Control(func(fd uintptr) {
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// https://docs.microsoft.com/en-us/troubleshoot/windows/win32/header-library-requirement-socket-ipproto-ip
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// #define IP_DONTFRAGMENT 14 /* don't fragment IP datagrams */
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err2 = syscall.SetsockoptInt(syscall.Handle(fd), syscall.IPPROTO_IP, 14, 1)
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})
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if err1 != nil {
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return err1
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}
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return err2
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}
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