commit 12478006b99805c30a2d278c969937563ce507e1 Author: Cecylia Bocovich cohosh@torproject.org Date: Mon Jun 22 14:29:09 2020 -0400

Update proxy NAT type based on client's NAT type --- broker.js | 4 ++-- snowflake.js | 12 ++++++++---- spec/broker.spec.js | 6 +++--- 3 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/broker.js b/broker.js index e1aab0f..9d8b8b6 100644 --- a/broker.js +++ b/broker.js @@ -52,7 +52,7 @@ class Broker { case Broker.CODE.OK: var response = JSON.parse(xhr.responseText); if (response.Status == Broker.STATUS.MATCH) { - return fulfill(response.Offer); // Should contain offer. + return fulfill(response); // Should contain offer. } else if (response.Status == Broker.STATUS.TIMEOUT) { return reject(Broker.MESSAGE.TIMEOUT); } else { @@ -66,7 +66,7 @@ class Broker { } }; this._xhr = xhr; // Used by spec to fake async Broker interaction - var data = {"Version": "1.1", "Sid": id, "Type": this.config.proxyType, "NAT": this.natType}; + var data = {"Version": "1.2", "Sid": id, "Type": this.config.proxyType, "NAT": this.natType}; return this._postRequest(xhr, 'proxy', JSON.stringify(data)); }); } diff --git a/snowflake.js b/snowflake.js index 91a8d87..1937fdb 100644 --- a/snowflake.js +++ b/snowflake.js @@ -68,8 +68,9 @@ class Snowflake { } this.ui.setStatus(msg); recv = this.broker.getClientOffer(pair.id); - recv.then((desc) => { - if (!this.receiveOffer(pair, desc)) { + recv.then((resp) => { + var clientNAT = resp.NAT; + if (!this.receiveOffer(pair, resp.Offer)) { return pair.close(); } //set a timeout for channel creation @@ -81,8 +82,11 @@ class Snowflake { this.pollInterval = Math.min(this.pollInterval + this.config.pollAdjustment, this.config.slowestBrokerPollInterval); - // assume restricted NAT - this.ui.natType = "restricted"; + // if we fail to connect to a restricted client, assume restricted NAT + if (clientNAT == "restricted"){ + this.ui.natType = "restricted"; + console.log("Learned NAT type: restricted"); + } this.broker.setNATType(this.ui.natType); } else { // decrease poll interval diff --git a/spec/broker.spec.js b/spec/broker.spec.js index 28a66c4..cedf5f9 100644 --- a/spec/broker.spec.js +++ b/spec/broker.spec.js @@ -40,14 +40,14 @@ describe('Broker', function() { spyOn(b, '_postRequest').and.callFake(function() { b._xhr.readyState = b._xhr.DONE; b._xhr.status = Broker.CODE.OK; - b._xhr.responseText = '{"Status":"client match","Offer":"fake offer"}'; + b._xhr.responseText = '{"Status":"client match","Offer":"fake offer","NAT":"unknown"}'; return b._xhr.onreadystatechange(); }); poll = b.getClientOffer(); expect(poll).not.toBeNull(); expect(b._postRequest).toHaveBeenCalled(); - return poll.then(function(desc) { - expect(desc).toEqual('fake offer'); + return poll.then(function(resp) { + expect(resp.Offer).toEqual('fake offer'); return done(); }).catch(function() { fail('should not reject on Broker.CODE.OK');