68 lines
1.4 KiB
Go
68 lines
1.4 KiB
Go
package main
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import (
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"log"
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"net"
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)
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type AbstractMulticast struct {
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MIpAddr string
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MPort string
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MaxDatagramSize int
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MWaddr *net.UDPAddr
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MRaddr *net.UDPAddr
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Wconn *net.UDPConn
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Rconn *net.UDPConn
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}
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func (mip *AbstractMulticast) CreateUdpAddr() {
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// This Will create the local UDP Address
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addr, err := net.ResolveUDPAddr("udp4", mip.MIpAddr+":"+mip.MPort)
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if err != nil {
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log.Fatal(err.Error())
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}
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mip.MRaddr = addr
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log.Println("Multicast Listen addr created: ", mip.MRaddr.String())
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// This will create the Writing UDP Addr
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mip.MWaddr = addr
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log.Println("Multicast Writing addr created: ", mip.MWaddr.String())
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}
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func (mip *AbstractMulticast) CreateWritingSocket() {
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conn, err := net.DialUDP("udp4", nil, mip.MWaddr)
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if err != nil {
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log.Fatal(err.Error())
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}
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mip.Wconn = conn
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log.Println("Multicast Writing Socket Created: ", mip.Wconn.LocalAddr().String(), "->", mip.Wconn.RemoteAddr().String())
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}
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func (mip *AbstractMulticast) CreateReadingSocket() {
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// Open up a connection
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conn, err := net.ListenMulticastUDP("udp", nil, mip.MRaddr)
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if err != nil {
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log.Fatal("UDP " + err.Error())
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}
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conn.SetReadBuffer(mip.MaxDatagramSize)
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mip.Rconn = conn
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log.Println("Multicast Reading Socket Created: ", mip.Rconn.LocalAddr().String())
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}
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func (mip *AbstractMulticast) GetMulticastReady() {
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mip.CreateUdpAddr()
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mip.CreateWritingSocket()
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mip.CreateReadingSocket()
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}
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