I want to use golang pion/webrtc to publish local video files to the video server. This video server only supports tcp connections. When I pass When the pion/webrtc code generates offer sdp, the candidate list does not have a tcp candidate, so the ice connection fails. When I use chrome as webrtc client to post camera video, it works, I don't know how to make chrome disable tcp candidates, I checked the candidates of chrome and pion/webrtc, I found the difference is the candidate tcp address, I tried thinking I tried my best to let pion/webrtc generate tcp candidate addresses, but they all failed. Please help me.
This is my code:
package main
import (
"fmt"
"io"
"os"
"path/filepath"
"sync"
"time"
"github.com/google/uuid"
"github.com/pion/webrtc/v3"
"github.com/pion/webrtc/v3/pkg/media"
"github.com/pion/webrtc/v3/pkg/media/h264reader"
)
func main() {
// 创建peerconnection配置
config := webrtc.configuration{
iceservers: []webrtc.iceserver{
{
urls: []string{"stun:stun.l.google.com:19302"},
},
},
icetransportpolicy: webrtc.icetransportpolicyall,
}
// 创建peerconnection
peerconnection, err := webrtc.newpeerconnection(config)
if err != nil {
panic(err)
}
videotrack, err := newh264localstaticsamplevideotrack("test.h264", 25)
if err != nil {
panic(err)
}
if rtpsender, err := peerconnection.addtrack(videotrack); err != nil {
panic(err)
} else {
go func() {
for {
buf := make([]byte, 1024*1024)
var rtcperr error
if _, _, rtcperr = rtpsender.read(buf); rtcperr != nil {
fmt.printf("read error: %v", rtcperr.error())
return
}
}
}()
}
offer, err := peerconnection.createoffer(nil)
if err != nil {
panic(err)
}
err = peerconnection.setlocaldescription(offer)
if err != nil {
panic(err)
}
wait := webrtc.gatheringcompletepromise(peerconnection)
<-wait
fmt.printf("local sdp: %v", peerconnection.localdescription().sdp)
}
func newh264localstaticsamplevideotrack(videofile string, fps int) (videotrack *webrtc.tracklocalstaticsample, err error) {
if videofile == "" {
err = fmt.errorf("videofile is empty")
return
}
var videofileabs string
videofileabs, err = filepath.abs(videofile)
if err != nil {
return
}
_, err = os.stat(videofileabs)
if err != nil {
return
}
videotrack, err = webrtc.newtracklocalstaticsample(webrtc.rtpcodeccapability{
mimetype: webrtc.mimetypeh264,
}, "video", fmt.sprintf("rtckit/%s", uuid.new().string()))
if err != nil {
return
}
go h264videofileconsumer(videotrack, videofileabs, time.duration(1000/fps)*time.millisecond)
return
}
func h264videofileconsumer(videotrack *webrtc.tracklocalstaticsample, videofile string, videofps time.duration) {
for {
file, h264err := os.open(videofile)
if h264err != nil {
continue
}
h264, h264err := h264reader.newreader(file)
if h264err != nil {
continue
}
buf := make(chan []byte, 1024*1024) // 1mb?
var wg sync.waitgroup
wg.add(2)
go func() {
defer wg.done()
for data := range buf {
sample := media.sample{data: data, duration: videofps}
if h264err1 := videotrack.writesample(sample); h264err1 != nil {
continue
}
}
}()
go func() {
defer wg.done()
ticker := time.newticker(videofps)
for ; true; <-ticker.c {
nal, h264err := h264.nextnal()
if h264err == io.eof {
break
}
if h264err != nil {
break
}
buf <- nal.data
}
close(buf)
}()
wg.wait()
_ = file.close()
}
}
This is the quote I got:
offer2: v=0 o=- 3976125905671053001 1681720949 IN IP4 0.0.0.0 s=- t=0 0 a=fingerprint:sha-256 31:A1:C7:4B:05:14:A3:7E:FE:CA:9C:4D:91:F0:29:6C:01:BF:20:67:DF:AA:EA:06:29:A4:DD:3F:F0:AA:5B:BD a=extmap-allow-mixed a=group:BUNDLE 0 m=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 121 127 120 125 107 108 109 123 118 116 c=IN IP4 0.0.0.0 a=setup:actpass a=mid:0 a=ice-ufrag:ZjDGAGZtPHgWMfWa a=ice-pwd:bJJRYUMfPcshoPCHTSfkyfrzwiJIiQkm a=rtcp-mux a=rtcp-rsize a=rtpmap:96 VP8/90000 a=rtcp-fb:96 goog-remb a=rtcp-fb:96 ccm fir a=rtcp-fb:96 nack a=rtcp-fb:96 nack pli a=rtcp-fb:96 nack a=rtcp-fb:96 nack pli a=rtcp-fb:96 transport-cc a=rtpmap:97 rtx/90000 a=fmtp:97 apt=96 a=rtcp-fb:97 nack a=rtcp-fb:97 nack pli a=rtcp-fb:97 transport-cc a=rtpmap:98 VP9/90000 a=fmtp:98 profile-id=0 a=rtcp-fb:98 goog-remb a=rtcp-fb:98 ccm fir a=rtcp-fb:98 nack a=rtcp-fb:98 nack pli a=rtcp-fb:98 nack a=rtcp-fb:98 nack pli a=rtcp-fb:98 transport-cc a=rtpmap:99 rtx/90000 a=fmtp:99 apt=98 a=rtcp-fb:99 nack a=rtcp-fb:99 nack pli a=rtcp-fb:99 transport-cc a=rtpmap:100 VP9/90000 a=fmtp:100 profile-id=1 a=rtcp-fb:100 goog-remb a=rtcp-fb:100 ccm fir a=rtcp-fb:100 nack a=rtcp-fb:100 nack pli a=rtcp-fb:100 nack a=rtcp-fb:100 nack pli a=rtcp-fb:100 transport-cc a=rtpmap:101 rtx/90000 a=fmtp:101 apt=100 a=rtcp-fb:101 nack a=rtcp-fb:101 nack pli a=rtcp-fb:101 transport-cc a=rtpmap:102 H264/90000 a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f a=rtcp-fb:102 goog-remb a=rtcp-fb:102 ccm fir a=rtcp-fb:102 nack a=rtcp-fb:102 nack pli a=rtcp-fb:102 nack a=rtcp-fb:102 nack pli a=rtcp-fb:102 transport-cc a=rtpmap:121 rtx/90000 a=fmtp:121 apt=102 a=rtcp-fb:121 nack a=rtcp-fb:121 nack pli a=rtcp-fb:121 transport-cc a=rtpmap:127 H264/90000 a=fmtp:127 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f a=rtcp-fb:127 goog-remb a=rtcp-fb:127 ccm fir a=rtcp-fb:127 nack a=rtcp-fb:127 nack pli a=rtcp-fb:127 nack a=rtcp-fb:127 nack pli a=rtcp-fb:127 transport-cc a=rtpmap:120 rtx/90000 a=fmtp:120 apt=127 a=rtcp-fb:120 nack a=rtcp-fb:120 nack pli a=rtcp-fb:120 transport-cc a=rtpmap:125 H264/90000 a=fmtp:125 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f a=rtcp-fb:125 goog-remb a=rtcp-fb:125 ccm fir a=rtcp-fb:125 nack a=rtcp-fb:125 nack pli a=rtcp-fb:125 nack a=rtcp-fb:125 nack pli a=rtcp-fb:125 transport-cc a=rtpmap:107 rtx/90000 a=fmtp:107 apt=125 a=rtcp-fb:107 nack a=rtcp-fb:107 nack pli a=rtcp-fb:107 transport-cc a=rtpmap:108 H264/90000 a=fmtp:108 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f a=rtcp-fb:108 goog-remb a=rtcp-fb:108 ccm fir a=rtcp-fb:108 nack a=rtcp-fb:108 nack pli a=rtcp-fb:108 nack a=rtcp-fb:108 nack pli a=rtcp-fb:108 transport-cc a=rtpmap:109 rtx/90000 a=fmtp:109 apt=108 a=rtcp-fb:109 nack a=rtcp-fb:109 nack pli a=rtcp-fb:109 transport-cc a=rtpmap:123 H264/90000 a=fmtp:123 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=640032 a=rtcp-fb:123 goog-remb a=rtcp-fb:123 ccm fir a=rtcp-fb:123 nack a=rtcp-fb:123 nack pli a=rtcp-fb:123 nack a=rtcp-fb:123 nack pli a=rtcp-fb:123 transport-cc a=rtpmap:118 rtx/90000 a=fmtp:118 apt=123 a=rtcp-fb:118 nack a=rtcp-fb:118 nack pli a=rtcp-fb:118 transport-cc a=rtpmap:116 ulpfec/90000 a=rtcp-fb:116 nack a=rtcp-fb:116 nack pli a=rtcp-fb:116 transport-cc a=extmap:1 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01 a=ssrc:554659860 cname:rtckit/53bd9691-40c4-4a58-9165-c7579c4b5031 a=ssrc:554659860 msid:rtckit/53bd9691-40c4-4a58-9165-c7579c4b5031 video a=ssrc:554659860 mslabel:rtckit/53bd9691-40c4-4a58-9165-c7579c4b5031 a=ssrc:554659860 label:video a=msid:rtckit/53bd9691-40c4-4a58-9165-c7579c4b5031 video a=sendrecv a=candidate:4113284106 1 udp 2130706431 101.4.122.16 41267 typ host a=candidate:4113284106 2 udp 2130706431 101.4.122.16 41267 typ host a=candidate:3528925834 1 udp 2130706431 172.18.0.1 33655 typ host a=candidate:3528925834 2 udp 2130706431 172.18.0.1 33655 typ host a=candidate:233762139 1 udp 2130706431 172.17.0.1 53508 typ host a=candidate:233762139 2 udp 2130706431 172.17.0.1 53508 typ host a=candidate:300762037 1 udp 1694498815 178.173.224.70 56107 typ srflx raddr 0.0.0.0 rport 56107 a=candidate:300762037 2 udp 1694498815 178.173.224.70 56107 typ srflx raddr 0.0.0.0 rport 56107 a=end-of-candidates
The best combination~
I tried adding the ice server in localhost and using stun:stun.l.google.com:19302 and asking chatgpt, none of this worked.
By default, Pion does not enable ICE-TCP candidates.
You can pass SettingEngine.SetICETCPMux一个>
See examples/ice-tcp for complete information on selected examples of how to use this API.
Good luck and thank you for using Pion!
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