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authorCecylia Bocovich <cohosh@torproject.org>2021-01-15 11:50:56 -0500
committerCecylia Bocovich <cohosh@torproject.org>2021-01-25 14:05:24 -0500
commitbae0bacbfdcd7d195e5ecff985bbff2361937170 (patch)
tree42c799e4a45bdef7a71fb153922acf137f2911af
parent1b29ad7de14fb0a6d2bf88aea38353733682cd26 (diff)
downloadsnowflake-bae0bacbfdcd7d195e5ecff985bbff2361937170.tar.gz
snowflake-bae0bacbfdcd7d195e5ecff985bbff2361937170.zip
Classify proxies with unknown NATs as restricted
-rw-r--r--broker/broker.go12
-rw-r--r--broker/snowflake-broker_test.go17
2 files changed, 15 insertions, 14 deletions
diff --git a/broker/broker.go b/broker/broker.go
index 983f95d..b8c7b6c 100644
--- a/broker/broker.go
+++ b/broker/broker.go
@@ -144,10 +144,10 @@ func (ctx *BrokerContext) Broker() {
ctx.snowflakeLock.Lock()
defer ctx.snowflakeLock.Unlock()
if snowflake.index != -1 {
- if request.natType == NATRestricted {
- heap.Remove(ctx.restrictedSnowflakes, snowflake.index)
- } else {
+ if request.natType == NATUnrestricted {
heap.Remove(ctx.snowflakes, snowflake.index)
+ } else {
+ heap.Remove(ctx.restrictedSnowflakes, snowflake.index)
}
delete(ctx.idToSnowflake, snowflake.id)
close(request.offerChannel)
@@ -169,10 +169,10 @@ func (ctx *BrokerContext) AddSnowflake(id string, proxyType string, natType stri
snowflake.offerChannel = make(chan *ClientOffer)
snowflake.answerChannel = make(chan []byte)
ctx.snowflakeLock.Lock()
- if natType == NATRestricted {
- heap.Push(ctx.restrictedSnowflakes, snowflake)
- } else {
+ if natType == NATUnrestricted {
heap.Push(ctx.snowflakes, snowflake)
+ } else {
+ heap.Push(ctx.restrictedSnowflakes, snowflake)
}
ctx.snowflakeLock.Unlock()
ctx.idToSnowflake[id] = snowflake
diff --git a/broker/snowflake-broker_test.go b/broker/snowflake-broker_test.go
index 7b87313..3b59a0f 100644
--- a/broker/snowflake-broker_test.go
+++ b/broker/snowflake-broker_test.go
@@ -29,7 +29,7 @@ func TestBroker(t *testing.T) {
Convey("Adds Snowflake", func() {
So(ctx.snowflakes.Len(), ShouldEqual, 0)
So(len(ctx.idToSnowflake), ShouldEqual, 0)
- ctx.AddSnowflake("foo", "", NATUnknown)
+ ctx.AddSnowflake("foo", "", NATUnrestricted)
So(ctx.snowflakes.Len(), ShouldEqual, 1)
So(len(ctx.idToSnowflake), ShouldEqual, 1)
})
@@ -37,6 +37,7 @@ func TestBroker(t *testing.T) {
Convey("Broker goroutine matches clients with proxies", func() {
p := new(ProxyPoll)
p.id = "test"
+ p.natType = "unrestricted"
p.offerChannel = make(chan *ClientOffer)
go func(ctx *BrokerContext) {
ctx.proxyPolls <- p
@@ -55,7 +56,7 @@ func TestBroker(t *testing.T) {
Convey("Request an offer from the Snowflake Heap", func() {
done := make(chan *ClientOffer)
go func() {
- offer := ctx.RequestOffer("test", "", NATUnknown)
+ offer := ctx.RequestOffer("test", "", NATUnrestricted)
done <- offer
}()
request := <-ctx.proxyPolls
@@ -79,7 +80,7 @@ func TestBroker(t *testing.T) {
Convey("with a proxy answer if available.", func() {
done := make(chan bool)
// Prepare a fake proxy to respond with.
- snowflake := ctx.AddSnowflake("fake", "", NATUnknown)
+ snowflake := ctx.AddSnowflake("fake", "", NATUnrestricted)
go func() {
clientOffers(ctx, w, r)
done <- true
@@ -97,7 +98,7 @@ func TestBroker(t *testing.T) {
return
}
done := make(chan bool)
- snowflake := ctx.AddSnowflake("fake", "", NATUnknown)
+ snowflake := ctx.AddSnowflake("fake", "", NATUnrestricted)
go func() {
clientOffers(ctx, w, r)
// Takes a few seconds here...
@@ -147,7 +148,7 @@ func TestBroker(t *testing.T) {
})
Convey("Responds to proxy answers...", func() {
- s := ctx.AddSnowflake("test", "", NATUnknown)
+ s := ctx.AddSnowflake("test", "", NATUnrestricted)
w := httptest.NewRecorder()
data := bytes.NewReader([]byte(`{"Version":"1.0","Sid":"test","Answer":"test"}`))
@@ -260,7 +261,7 @@ func TestBroker(t *testing.T) {
// Manually do the Broker goroutine action here for full control.
p := <-ctx.proxyPolls
So(p.id, ShouldEqual, "ymbcCMto7KHNGYlp")
- s := ctx.AddSnowflake(p.id, "", NATUnknown)
+ s := ctx.AddSnowflake(p.id, "", NATUnrestricted)
go func() {
offer := <-s.offerChannel
p.offerChannel <- offer
@@ -437,7 +438,7 @@ func TestGeoip(t *testing.T) {
if err := ctx.metrics.LoadGeoipDatabases("invalid_filename", "invalid_filename6"); err != nil {
log.Printf("loading geo ip databases returned error: %v", err)
}
- ctx.metrics.UpdateCountryStats("127.0.0.1", "", NATUnknown)
+ ctx.metrics.UpdateCountryStats("127.0.0.1", "", NATUnrestricted)
So(ctx.metrics.tablev4, ShouldEqual, nil)
})
@@ -537,7 +538,7 @@ func TestMetrics(t *testing.T) {
So(err, ShouldBeNil)
// Prepare a fake proxy to respond with.
- snowflake := ctx.AddSnowflake("fake", "", NATUnknown)
+ snowflake := ctx.AddSnowflake("fake", "", NATUnrestricted)
go func() {
clientOffers(ctx, w, r)
done <- true