94 lines
1.6 KiB
Go
94 lines
1.6 KiB
Go
package main
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import (
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"net"
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"time"
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"github.com/aler9/gortsplib"
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)
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type udpAddrBufPair struct {
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addr *net.UDPAddr
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buf []byte
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}
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type serverUdp struct {
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p *program
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nconn *net.UDPConn
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streamType gortsplib.StreamType
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readBuf *multiBuffer
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writeChan chan *udpAddrBufPair
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done chan struct{}
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}
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func newServerUdp(p *program, port int, streamType gortsplib.StreamType) (*serverUdp, error) {
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nconn, err := net.ListenUDP("udp", &net.UDPAddr{
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Port: port,
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})
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if err != nil {
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return nil, err
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}
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l := &serverUdp{
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p: p,
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nconn: nconn,
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streamType: streamType,
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readBuf: newMultiBuffer(3, clientUdpReadBufferSize),
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writeChan: make(chan *udpAddrBufPair),
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done: make(chan struct{}),
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}
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l.log("opened on :%d", port)
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return l, nil
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}
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func (l *serverUdp) log(format string, args ...interface{}) {
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var label string
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if l.streamType == gortsplib.StreamTypeRtp {
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label = "RTP"
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} else {
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label = "RTCP"
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}
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l.p.log("[UDP/"+label+" listener] "+format, args...)
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}
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func (l *serverUdp) run() {
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writeDone := make(chan struct{})
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go func() {
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defer close(writeDone)
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for w := range l.writeChan {
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l.nconn.SetWriteDeadline(time.Now().Add(l.p.conf.WriteTimeout))
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l.nconn.WriteTo(w.buf, w.addr)
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}
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}()
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for {
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buf := l.readBuf.next()
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n, addr, err := l.nconn.ReadFromUDP(buf)
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if err != nil {
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break
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}
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l.p.events <- programEventClientFrameUdp{
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addr,
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l.streamType,
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buf[:n],
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}
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}
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close(l.writeChan)
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<-writeDone
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close(l.done)
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}
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func (l *serverUdp) close() {
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l.nconn.Close()
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<-l.done
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}
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func (l *serverUdp) write(pair *udpAddrBufPair) {
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l.writeChan <- pair
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}
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