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475939a77f
The idle period is set to 5sec. We now also ping every second since last activity. This makes the quic.Connection less prone to being closed with no network activity, since we send multiple pings per idle period, and thus a single packet loss cannot cause the problem.
42 lines
1.2 KiB
Go
42 lines
1.2 KiB
Go
//go:build linux
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// +build linux
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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/unix"
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"github.com/lucas-clemente/quic-go/internal/utils"
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)
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func setDF(rawConn syscall.RawConn) error {
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// Enabling IP_MTU_DISCOVER will force the kernel to return "sendto: message too long"
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// and the datagram will not be fragmented
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var errDFIPv4, errDFIPv6 error
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if err := rawConn.Control(func(fd uintptr) {
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errDFIPv4 = unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_MTU_DISCOVER, unix.IP_PMTUDISC_DO)
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errDFIPv6 = unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_MTU_DISCOVER, unix.IPV6_PMTUDISC_DO)
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}); err != nil {
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return 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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utils.DefaultLogger.Errorf("setting DF failed for both IPv4 and IPv6")
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}
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return nil
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}
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func isMsgSizeErr(err error) bool {
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// https://man7.org/linux/man-pages/man7/udp.7.html
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return errors.Is(err, unix.EMSGSIZE)
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}
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