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https://github.com/refraction-networking/uquic.git
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95575f5fe7
uTLS is not yet bumped to the new version, so this commit breaks the dependencies relationship by getting rid of the local replace.
54 lines
1.7 KiB
Go
54 lines
1.7 KiB
Go
//go:build windows
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package quic
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import (
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"errors"
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"syscall"
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"golang.org/x/sys/windows"
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"github.com/refraction-networking/uquic/internal/utils"
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)
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const (
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// IP_DONTFRAGMENT controls the Don't Fragment (DF) bit.
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//
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// It's the same code point for both IPv4 and IPv6 on Windows.
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// https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Networking/WinSock/constant.IP_DONTFRAG.html
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// https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Networking/WinSock/constant.IPV6_DONTFRAG.html
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//
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//nolint:stylecheck
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IP_DONTFRAGMENT = 14
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)
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func setDF(rawConn syscall.RawConn) (bool, error) {
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var errDFIPv4, errDFIPv6 error
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if err := rawConn.Control(func(fd uintptr) {
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errDFIPv4 = windows.SetsockoptInt(windows.Handle(fd), windows.IPPROTO_IP, IP_DONTFRAGMENT, 1)
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errDFIPv6 = windows.SetsockoptInt(windows.Handle(fd), windows.IPPROTO_IPV6, IP_DONTFRAGMENT, 1)
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}); err != nil {
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return false, err
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}
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switch {
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case errDFIPv4 == nil && errDFIPv6 == nil:
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utils.DefaultLogger.Debugf("Setting DF for IPv4 and IPv6.")
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case errDFIPv4 == nil && errDFIPv6 != nil:
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utils.DefaultLogger.Debugf("Setting DF for IPv4.")
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case errDFIPv4 != nil && errDFIPv6 == nil:
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utils.DefaultLogger.Debugf("Setting DF for IPv6.")
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case errDFIPv4 != nil && errDFIPv6 != nil:
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return false, errors.New("setting DF failed for both IPv4 and IPv6")
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}
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return true, nil
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}
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func isSendMsgSizeErr(err error) bool {
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// https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2
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return errors.Is(err, windows.WSAEMSGSIZE)
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}
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func isRecvMsgSizeErr(err error) bool {
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// https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2
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return errors.Is(err, windows.WSAEMSGSIZE)
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}
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