/
udp.go
100 lines (88 loc) · 2.27 KB
/
udp.go
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// Copyright (c) 2018 The MATRIX Authors
// Distributed under the MIT software license, see the accompanying
// file COPYING or or http://www.opensource.org/licenses/mit-license.php
package p2p
import (
"net"
"github.com/MatrixAINetwork/go-matrix/ca"
"github.com/MatrixAINetwork/go-matrix/common"
"github.com/MatrixAINetwork/go-matrix/core/types"
"github.com/MatrixAINetwork/go-matrix/log"
"github.com/MatrixAINetwork/go-matrix/mc"
"github.com/MatrixAINetwork/go-matrix/params"
"github.com/MatrixAINetwork/go-matrix/rlp"
)
func UdpStart() {
addr, err := net.ResolveUDPAddr("udp", ":30000")
if err != nil {
log.Error("Can't resolve address: ", "p2p udp", err)
return
}
conn, err := net.ListenUDP("udp", addr)
if err != nil {
log.Error("Error listening:", "p2p udp", err)
return
}
defer conn.Close()
buf := make([]byte, params.MaxUdpBuf)
for {
var mxtxs []*types.Transaction_Mx
n, _, err := conn.ReadFromUDP(buf)
if err != nil {
log.Error("UDP read error", "err", err)
return
}
err = rlp.DecodeBytes(buf[:n], &mxtxs)
if err != nil {
log.Error("rlp decode error", "err", err)
continue
}
mc.PublishEvent(mc.SendUdpTx, mxtxs)
}
}
func UdpSend(data interface{}) {
bytes, err := rlp.EncodeToBytes(data)
if err != nil {
log.Error("error", "p2p udp", err)
return
}
signAddr := make([]common.Address, 0)
if ca.InDuration() {
signAddr = ca.GetRolesByGroupOnlyNextElect(common.RoleValidator | common.RoleBackupValidator)
} else {
signAddr = ca.GetRolesByGroup(common.RoleValidator | common.RoleBackupValidator)
}
if len(signAddr) <= 2 {
for _, id := range signAddr {
send(id, bytes)
}
return
}
is := Random(len(signAddr), 2)
for _, i := range is {
send(signAddr[i], bytes)
}
}
func send(address common.Address, data []byte) {
n := ServerP2p.ntab.ResolveNode(address, EmptyNodeId)
if n == nil {
log.Error("can't send udp to", "addr", address)
return
}
addr, err := net.ResolveUDPAddr("udp", n.IP.String()+":30000")
if err != nil {
log.Error("Can't resolve address: ", "p2p udp", err)
return
}
conn, err := net.DialUDP("udp", nil, addr)
if err != nil {
log.Error("Can't dial: ", "p2p udp", err)
return
}
defer conn.Close()
_, err = conn.Write(data)
if err != nil {
log.Error("failed:", "p2p udp", err)
return
}
}