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Split out SDP fragment parsing, add test.
This commit is contained in:
parent
45bbb138c6
commit
df274ad6ea
2 changed files with 51 additions and 14 deletions
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@ -1,6 +1,7 @@
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package webserver
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import (
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"bufio"
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"bytes"
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"crypto/aes"
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"crypto/cipher"
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@ -345,23 +346,25 @@ func whipResourceHandler(w http.ResponseWriter, r *http.Request) {
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return
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}
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body, err := io.ReadAll(http.MaxBytesReader(w, r.Body, sdpLimit))
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err = parseSDPFrag(
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http.MaxBytesReader(w, r.Body, sdpLimit),
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c.GotICECandidate,
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)
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if err != nil {
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httpError(w, err)
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log.Printf("WHIP trickle ICE: %v", err)
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http.Error(w, "bad request", http.StatusBadRequest)
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return
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}
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w.WriteHeader(http.StatusNoContent)
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}
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if len(body) < 2 {
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http.Error(w, "SDP truncated", http.StatusBadRequest)
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return
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}
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// RFC 8840
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lines := bytes.Split(body, []byte{'\n'})
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// RFC 8840
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func parseSDPFrag(r io.Reader, f func(webrtc.ICECandidateInit) error) error {
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scanner := bufio.NewScanner(r)
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mLineIndex := -1
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var mid, ufrag []byte
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for _, l := range lines {
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l = bytes.TrimRight(l, " \r")
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for scanner.Scan() {
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l := scanner.Bytes()
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if bytes.HasPrefix(l, []byte("a=ice-ufrag:")) {
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ufrag = l[len("a=ice-ufrag:"):]
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} else if bytes.HasPrefix(l, []byte("m=")) {
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@ -385,12 +388,11 @@ func whipResourceHandler(w http.ResponseWriter, r *http.Request) {
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s := string(ufrag)
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init.UsernameFragment = &s
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}
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err := c.GotICECandidate(init)
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err := f(init)
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if err != nil {
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log.Printf("WHIP candidate: %v", err)
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}
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}
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}
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w.WriteHeader(http.StatusNoContent)
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return
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return nil
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}
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35
webserver/whip_test.go
Normal file
35
webserver/whip_test.go
Normal file
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@ -0,0 +1,35 @@
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package webserver
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import (
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"strings"
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"testing"
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"github.com/pion/webrtc/v3"
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)
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func TestParseSDPFrag(t *testing.T) {
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sdp := `a=ice-ufrag:FZ0m
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a=ice-pwd:NRT+gj1EhsEwMm9MA7ljzBRy
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m=audio 9 UDP/TLS/RTP/SAVPF 0
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a=mid:0
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a=candidate:2930517337 1 udp 2113937151 1eaafdf1-4127-499f-90d4-8c35ea49d5e6.local 44360 typ host generation 0 ufrag FZ0m network-cost 999
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2024/09/30 00:07:41 {candidate:2930517337 1 udp 2113937151 1eaafdf1-4127-499f-90d4-8c35ea49d5e6.local 44360 typ host generation 0 ufrag FZ0m network-cost 999 0xc00062a580 0xc000620288 0xc00062a590}
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a=end-of-candidates`
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r := strings.NewReader(sdp)
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candidates := []webrtc.ICECandidateInit(nil)
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err := parseSDPFrag(r, func(c webrtc.ICECandidateInit) error {
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candidates = append(candidates, c)
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return nil
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})
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if err != nil {
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t.Errorf("parseSDPFrag: %v", err)
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}
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if len(candidates) != 1 {
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t.Errorf("Expected 1, got %v", candidates)
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}
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if *candidates[0].SDPMLineIndex != 0 ||
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*candidates[0].SDPMid != "0" ||
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*candidates[0].UsernameFragment != "FZ0m" {
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t.Errorf("Got %v", candidates[0])
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}
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}
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