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send a switch message immediately when peering, and use OS-level TCP keep-alive (shouldn't matter right now, since we have application-level keep-alive that preempts it, but important later)

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This commit is contained in:
Arceliar 2018-12-14 18:15:35 -06:00
parent ce98aac504
commit abd8b69979
2 changed files with 19 additions and 14 deletions
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9
src/yggdrasil/peer.go
View File

@ -177,6 +177,7 @@ func (p *peer) doSendSwitchMsgs() {
func (p *peer) linkLoop() {
tick := time.NewTicker(time.Second)
defer tick.Stop()
p.doSendSwitchMsgs()
for {
select {
case _, ok := <-p.doSend:
@ -185,11 +186,9 @@ func (p *peer) linkLoop() {
}
p.sendSwitchMsg()
case _ = <-tick.C:
//break // FIXME disabled the below completely to test something
pdinfo := p.dinfo // FIXME this is a bad workarond NPE on the next line
if pdinfo != nil {
dinfo := *pdinfo
p.core.dht.peers <- &dinfo
dinfo := p.dinfo // FIXME? are pointer reads *always* atomic?
if dinfo != nil {
p.core.dht.peers <- dinfo
}
}
}

24
src/yggdrasil/tcp.go
View File

@ -31,14 +31,6 @@ const tcp_msgSize = 2048 + 65535 // TODO figure out what makes sense
const default_tcp_timeout = 6 * time.Second
const tcp_ping_interval = (default_tcp_timeout * 2 / 3)
// Wrapper function for non tcp/ip connections.
func setNoDelay(c net.Conn, delay bool) {
tcp, ok := c.(*net.TCPConn)
if ok {
tcp.SetNoDelay(delay)
}
}
// The TCP listener and information about active TCP connections, to avoid duplication.
type tcpInterface struct {
core *Core
@ -58,6 +50,20 @@ type tcpInfo struct {
remoteAddr string
}
// Wrapper function to set additional options for specific connection types.
func (iface *tcpInterface) setExtraOptions(c net.Conn) {
switch sock := c.(type) {
case *net.TCPConn:
sock.SetNoDelay(true)
sock.SetKeepAlive(true)
sock.SetKeepAlivePeriod(iface.tcp_timeout)
panic("DEBUG testing")
// TODO something for socks5
default:
iface.core.log.Println("Unrecognized connection type: %v", sock)
}
}
// Returns the address of the listener.
func (iface *tcpInterface) getAddr() *net.TCPAddr {
return iface.serv.Addr().(*net.TCPAddr)
@ -205,6 +211,7 @@ func (iface *tcpInterface) call(saddr string, socksaddr *string, sintf string) {
// It defers a bunch of cleanup stuff to tear down all of these things when the reader exists (e.g. due to a closed connection or a timeout).
func (iface *tcpInterface) handler(sock net.Conn, incoming bool) {
defer sock.Close()
iface.setExtraOptions(sock)
// Get our keys
myLinkPub, myLinkPriv := newBoxKeys() // ephemeral link keys
meta := version_getBaseMetadata()
@ -342,7 +349,6 @@ func (iface *tcpInterface) handler(sock net.Conn, incoming bool) {
out <- msg
}
p.close = func() { sock.Close() }
setNoDelay(sock, true)
go p.linkLoop()
defer func() {
// Put all of our cleanup here...