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fumiama
2021-12-31 12:34:54 +08:00
parent 7a30bfb1e6
commit d108bb81b4
11 changed files with 336 additions and 147 deletions
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10
lower/nic.go
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@@ -58,8 +58,8 @@ func (nc *NIC) Start(m *link.Me) {
logrus.Infoln("[lower] recv write", n, "bytes packet to nic")
}
}()
buf := make([]byte, 65536) // 永远不可能超界
for nc.hasstart { // 从 NIC 发送
buf := make([]byte, m.MTU()+64) // 增加报头长度与 TEA 冗余
for nc.hasstart { // 从 NIC 发送
packet := buf
n, err := nc.ifce.Read(packet)
if err != nil {
@@ -115,15 +115,13 @@ func send(m *link.Me, packet []byte) (n int, rem []byte) {
packet = packet[:totl]
n = int(totl)
dst := waterutil.IPv4Destination(packet)
srcport := waterutil.IPv4SourcePort(packet)
dstport := waterutil.IPv4DestinationPort(packet)
logrus.Infoln("[lower] sending", len(packet), "bytes packet from :"+strconv.Itoa(int(srcport)), "to", dst.String()+":"+strconv.Itoa(int(dstport)))
logrus.Infoln("[lower] sending", len(packet), "bytes packet from :"+strconv.Itoa(int(m.SrcPort())), "to", dst.String()+":"+strconv.Itoa(int(m.DstPort())))
lnk, err := m.Connect(dst.String())
if err != nil {
logrus.Warnln("[lower] connect to peer", dst.String(), "err:", err)
return
}
_, err = lnk.Write(head.NewPacket(head.ProtoData, srcport, dst, dstport, packet), false)
_, err = lnk.Write(head.NewPacket(head.ProtoData, m.SrcPort(), dst, m.DstPort(), packet), false)
if err != nil {
logrus.Warnln("[lower] write to peer", dst.String(), "err:", err)
}