gb28181 sdp 解析

go.mod

@@ -26,6 +26,8 @@ require (
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/pion/sdp v1.3.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/sagikazarmark/locafero v0.4.0 // indirect
 	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
 	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b // indirect

go.sum

@@ -47,6 +47,9 @@ github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyua
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
 github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
+github.com/pion/sdp v1.3.0 h1:21lpgEILHyolpsIrbCBagZaAPj4o057cFjzaFebkVOs=
+github.com/pion/sdp v1.3.0/go.mod h1:ceA2lTyftydQTuCIbUNoH77aAt6CiQJaRpssA4Gee8I=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=

test/sdp_test.go

@@ -0,0 +1,53 @@
+package test
+
+import (
+	"github.com/pion/sdp"
+	"io"
+	"regexp"
+	"strings"
+	"testing"
+)
+
+func TestSDP(t *testing.T) {
+	req := `v=0
+o=00000000000000000002 0 0 IN IP4 10.10.10.200
+s=Play
+c=IN IP4 10.10.10.200
+t=0 0
+m=video 5080 RTP/AVP 99 125 126 96 97 98
+a=recvonly
+a=rtpmap:99 H265/90000
+a=fmtp:125 profile-level-id=42e01e
+a=rtpmap:125 H264S/90000
+a=fmtp:126 profile-level-id=42e01e
+a=rtpmap:126 H264/90000
+a=rtpmap:96 PS/90000
+a=rtpmap:97 MPEG4/90000
+a=rtpmap:98 H264/90000
+a=setup:active
+a=connection:new
+a=streamnumber:0
+y=501000001
+f=
+`
+	// 匹配 28181 协议的 ssrc
+	ssrcReg := regexp.MustCompile("y=(.*)")
+	matchSsrc := ssrcReg.FindStringSubmatch(req)
+	ssrc := matchSsrc[1]
+	t.Log("y= ", ssrc)
+	req = strings.Replace(req, matchSsrc[0], "", 1)
+
+	// 匹配 28181 协议的 format
+	formatReg := regexp.MustCompile("f=(.*)")
+	matchFormat := formatReg.FindStringSubmatch(req)
+	format := matchFormat[1]
+	t.Log("f= ", format)
+	req = strings.Replace(req, matchFormat[0], "", 1)
+
+	session := &sdp.SessionDescription{}
+	err := session.Unmarshal(req)
+	if err != nil && err != io.EOF {
+		t.Error(err)
+	}
+	t.Logf("%#v\n", session)
+}