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https://github.com/status-im/status-go.git
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b2580c79d7
Network disconnect is introduced by removing default gateway, easily reversible condition. On my local machine it takes 30 seconds for peers to reconnect after connectivity is restored. As you guess this is not an accident, and there is 30 seconds timeout for dial expiration. This dial expiration is used in p2p.Server to guarantee that peers are not dialed too often. Additionally I added small script to Makefile to run such tests in docker environment, usage example: ``` make docker-test ARGS="./t/destructive/ -v -network=4" ```
98 lines
1.7 KiB
Go
98 lines
1.7 KiB
Go
package netlink
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import (
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"fmt"
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"github.com/vishvananda/netlink/nl"
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"github.com/vishvananda/netns"
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"golang.org/x/sys/unix"
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)
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type XfrmMsg interface {
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Type() nl.XfrmMsgType
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}
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type XfrmMsgExpire struct {
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XfrmState *XfrmState
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Hard bool
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}
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func (ue *XfrmMsgExpire) Type() nl.XfrmMsgType {
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return nl.XFRM_MSG_EXPIRE
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}
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func parseXfrmMsgExpire(b []byte) *XfrmMsgExpire {
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var e XfrmMsgExpire
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msg := nl.DeserializeXfrmUserExpire(b)
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e.XfrmState = xfrmStateFromXfrmUsersaInfo(&msg.XfrmUsersaInfo)
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e.Hard = msg.Hard == 1
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return &e
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}
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func XfrmMonitor(ch chan<- XfrmMsg, done <-chan struct{}, errorChan chan<- error,
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types ...nl.XfrmMsgType) error {
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groups, err := xfrmMcastGroups(types)
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if err != nil {
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return nil
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}
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s, err := nl.SubscribeAt(netns.None(), netns.None(), unix.NETLINK_XFRM, groups...)
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if err != nil {
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return err
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}
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if done != nil {
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go func() {
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<-done
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s.Close()
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}()
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}
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go func() {
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defer close(ch)
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for {
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msgs, err := s.Receive()
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if err != nil {
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errorChan <- err
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return
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}
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for _, m := range msgs {
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switch m.Header.Type {
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case nl.XFRM_MSG_EXPIRE:
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ch <- parseXfrmMsgExpire(m.Data)
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default:
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errorChan <- fmt.Errorf("unsupported msg type: %x", m.Header.Type)
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}
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}
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}
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}()
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return nil
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}
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func xfrmMcastGroups(types []nl.XfrmMsgType) ([]uint, error) {
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groups := make([]uint, 0)
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if len(types) == 0 {
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return nil, fmt.Errorf("no xfrm msg type specified")
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}
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for _, t := range types {
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var group uint
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switch t {
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case nl.XFRM_MSG_EXPIRE:
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group = nl.XFRMNLGRP_EXPIRE
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default:
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return nil, fmt.Errorf("unsupported group: %x", t)
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}
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groups = append(groups, group)
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}
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return groups, nil
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}
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