stun: test on packets from webrtc

stun_test.go

@@ -12,8 +12,11 @@ import (
 	"strings"
 	"testing"
 
+	"encoding/base64"
+	"encoding/csv"
 	"github.com/pkg/errors"
 	log "github.com/sirupsen/logrus"
+	"hash/crc64"
 )
 
 func bUint16(v uint16) string {
@@ -576,3 +579,40 @@ func TestNearestLen(t *testing.T) {
 		}
 	}
 }
+
+func TestMessageFromBrowsers(t *testing.T) {
+	// file contains udp-packets captured from browsers (WebRTC)
+	reader := csv.NewReader(bytes.NewReader(loadData(t, "frombrowsers.csv")))
+	reader.Comma = ','
+	_, err := reader.Read() // skipping header
+	if err != nil {
+		t.Fatal("failed to skip header of csv: ", err)
+	}
+	m := AcquireMessage()
+	crcTable := crc64.MakeTable(crc64.ISO)
+	for {
+		line, err := reader.Read()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatal("failed to read csv line: ", err)
+		}
+		data, err := base64.StdEncoding.DecodeString(line[1])
+		if err != nil {
+			t.Fatal("failed to decode ", line[1], " as base64: ", err)
+		}
+		b, err := strconv.ParseUint(line[2], 10, 64)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if b != crc64.Checksum(data, crcTable) {
+			t.Error("crc64 check failed for ", line[1])
+		}
+		if _, err = m.ReadBytes(data); err != nil {
+			t.Error("failed to decode ", line[1], " as message: ", err)
+		}
+		m.Reset()
+	}
+	ReleaseMessage(m)
+}

testdata/frombrowsers.csv

@@ -0,0 +1,15 @@
+ip,message,crc,browser,version,system
+213.87.135.35:5127,AAEAACESpEJaU3lNekUycUIveEc=,14955568470663943731,Chrome,55.0.2883.91,Android 5.1.1
+213.87.135.35:35359,AAEACCESpEL/qLJHuDKc5PsGghOAKAAEqgN+GQ==,10276095995276579762,Firefox,50.0,Mobile
+185.79.100.8:8337,AAEAACESpEIrY1h5L3p1UytKQkE=,12881067838541718227,Chrome,55.0.2883.91,Android 5.1.1
+185.79.100.8:8422,AAEAACESpEI1Y1NTdm9yQ3NOMng=,11436996053979164376,Chrome,55.0.2883.91,Android 5.1.1
+185.79.100.8:7986,AAEACCESpEJb5g0r4yyFhiAECkaAKAAEcmtDIA==,4014551455069599512,Firefox,50.0,Mobile
+185.79.100.22:13841,AAEAACESpEJzVFJiOEFpdzZkUDM=,17727708163432284316,Chrome,55.0.2883.91,Android 5.1.1
+213.87.161.132:10323,AAEAACESpEJUdGs3ckUvQkVwQTg=,4195490818417829438,Chrome,55.0.2883.91,Android 5.1.1
+213.87.161.132:49166,AAEAACESpEJBT2J3VXZmVEZGa24=,210244277659580892,Chrome,55.0.2883.91,Android 5.1.1
+91.208.134.1:59285,AAEACCESpEL8J+y5nwi+zNxNyuGAKAAEriExcw==,17182568428950801870,Firefox,51.0,Ubuntu
+91.208.134.1:35576,AAEACCESpELD+wYQw3maWaeQD+yAKAAEmQBHaw==,1298525217870091633,Firefox,51.0,Ubuntu
+51.15.40.89:39281,AAEAGCESpEJraER2VEl6aWJ1ZGiALwARaHR0cHM6Ly9jeWRldi5ydS8AAAA=,2038078914284839991,Chrome,55.0.2883.87,Linux x86_64
+51.15.40.89:52341,AAEAGCESpEJHbHEveWt0dzB4cHOALwARaHR0cHM6Ly9jeWRldi5ydS8AAAA=,15407862181367978708,Chrome,55.0.2883.87,Linux x86_64
+51.15.40.89:53197,AAEAGCESpEJQVkdXVHBjbjhBWlWALwARaHR0cHM6Ly9jeWRldi5ydS8AAAA=,17607978280141252653,Chrome,55.0.2883.87,Linux x86_64
+51.15.40.89:58269,AAEACCESpEIB2FbktZDEiHN0z0iAKAAEK2VeXA==,3485408176062718742,Firefox,51.0,Ubuntu